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Antidiabetic and Hypocholesrolemic effect of Different Types of Vinegar in Rats

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Abstract

Vinegar is a traditional remedy for aliments including diabetes. This study was conducted to investigate the effects of different types of vinegar (sugarcane, apple, grape, coconut, artificial and palm vinegar) on serum Biochemical and Histopathological of pancreas and stomach of diabetic rats for 6 weeks at 15% concentration. The results indicated that, all of vinegar caused significant decrease P< 0.05 in glucose, TC , LDL-c and significant increase in HDL cholesterol. Apple vinegar was the most effective to decrease glucose, TC and LDL-c followed by grape, sugarcane, coconut, artificial and palm vinegar. Apple vinegar contained the higher concentration of organic acid and phenolic compound compared to other vinegar. Apple vinegar and grape vinegar were the most effective to decrease liver and kidney function. Administrating 15% vinegar with diet for 6 weeks decrease the food intake and feed efficiency ratio compared to control group. Moreover, administration different types of vinegar showed that no histopathological change in stomach and has protected effect of pancreas from undesirable change in B cells. In conclusion, using the different types of vinegar with diet for 6 weeks have beneficial effects on diabetic rats and have hypocholesterolemic effect. The vinegar did not effect on stomach histopathological structure and have protective effect of pancreas from damage. [Sahar S.A. Soltan and Manal M. E. M. Shehata. Antidiabetic and Hypocholesrolemic effect of Different Types of Vinegar in Rats. Life Sci J 2012;9(4):2141-2151] (ISSN: 1097-8135). http://www.lifesciencesite.com. 319
Life Science Journal 2012;9(4) http://www.lifesciencesite.com
2141
Antidiabetic and Hypocholesrolemic effect of Different Types of Vinegar in Rats
Sahar S.A. Soltan1 and Manal M. E. M. Shehata2
1 Department of Home Economics (Nutrition and Food Science), Faculty of Specific Education, Fayoum University,
Fayoum, Egypt
2Department of Food Science, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
ssamsoltan@hotmail.com
Abstract: Vinegar is a traditional remedy for aliments including diabetes. This study was conducted to investigate
the effects of different types of vinegar (sugarcane, apple, grape, coconut, artificial and palm vinegar) on serum
Biochemical and Histopathological of pancreas and stomach of diabetic rats for 6 weeks at 15% concentration. The
results indicated that, all of vinegar caused significant decrease P< 0.05 in glucose, TC , LDL-c and significant
increase in HDL cholesterol. Apple vinegar was the most effective to decrease glucose, TC and LDL-c followed by
grape, sugarcane, coconut, artificial and palm vinegar. Apple vinegar contained the higher concentration of organic
acid and phenolic compound compared to other vinegar. Apple vinegar and grape vinegar were the most effective to
decrease liver and kidney function. Administrating 15% vinegar with diet for 6 weeks decrease the food intake and
feed efficiency ratio compared to control group. Moreover, administration different types of vinegar showed that no
histopathological change in stomach and has protected effect of pancreas from undesirable change in B cells. In
conclusion, using the different types of vinegar with diet for 6 weeks have beneficial effects on diabetic rats and have
hypocholesterolemic effect. The vinegar did not effect on stomach histopathological structure and have protective
effect of pancreas from damage.
[Sahar S.A. Soltan and Manal M. E. M. Shehata. Antidiabetic and Hypocholesrolemic effect of Different Types of
Vinegar in Rats. Life Sci J 2012;9(4):2141-2151] (ISSN: 1097-8135). http://www.lifesciencesite.com. 319
Keywords: Diabetes mellitus, Apple vinegar, Grape vinegar, Coconut vinegar, Organic acid in vinegar,
Histopathology of pancreas and stomach.
1. Introduction
Diabetes mellitus has been defined as a chronic
disease with persistently elevated blood glucose
concentration (Greenbaun and Harrison, 2008). It is a
major and growing public health problem throughout
the world. Diabetes is the most common endocrine
disorder and by the year 2010, it is estimated that more
than 200 million people worldwide will have diabetes
mellitus and 300 million will subsequently have the
disease by 2025 (Wild et al., 2004 and Hamden et al.,
2011. Diabetes is the sixth most important cause of
disability burden in Egypt (NICHP, 2004). Over the
last century changes in human behavior and lifestyle
have resulted in a dramatic increase in the incidence of
diabetes in the world (Kaushik et al., 2010). The
burden of the disease is increasing both for the
progressive aging of population and for the worsening
of lifestyle (Zimmet, 2000). Dietary and lifestyle
factors play an important role not only in the etiology
but also in the management of diabetic patients. In
addition to the drug treatment, simple and inexpensive
diet strategies should aid in achieving and maintaining
optimal control of diabetes and diabetic complication
(Xuemei et al., 2012).
Vinegar is a liquid product from fermentation of
carbohydrate. It has been made and used dating from
around 300 BC and is an important element in Asian,
European, Western and other traditional cuisines of the
world. Vinegar has been used for various foods for
preservation and often used for flavoring food and
pickling. Moreover, diluted unpolished rice vinegar
has been drunk as a health food in Japan and its
antioxidant activity has been reported (Nishidai et al.,
2000; Shimoji et al., 2002).
Many medicinal components that are good for
health have been reported in natural vinegar, such as
carbohydrates (Johnston et al., 2004 and Leeman et
al., 2005), organic acid (acetic, formic, lactic, malic,
citric, succinic and tartaric), alcohols and amino acids
and peptides (Cocchia et al., 2006; Fushimi et al.,
2006), vitamins, mineral salts, amino acids,
polyphenolic compounds (e.g., Gallic acid, catechin,
caffeic, ferulic acid)( Morales et al., 2002; Natera et
al., 2003). Traditional vinegar is produced from
regional foods according to well- established customs.
The balsamic vinegar of Modena, Italy is made from
the local white Trebbiano grapes. Traditional rice wine
vinegar is produced in Asia, coconut and cane vinegar
is common in India and Philippines and date vinegars
are popular in the Middle East. Some scientific
investigation clearly benefits of vinegar such as:
antimicrobial properties (Vijayakumar and Wolf-
Hall.,2002; Sengun and Karapinar.,2005),prevent
inflammation and hypertension (Murooka and
Yamshita, 2008), lower serum cholesterol (Fushimi et
al., 2006), treatment of ear infection (otitis external,
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2142
otitis media) (Aminifarshidmehr, 1996; Jung et al.,
2002), treating mal fungus and warts (Takano- Lee et
al., 2004), reduction in systolic blood pressure (Kondo
et al., 2000), enhanced calcium absorption and
retention (Kishi et al., 1999), decrease the glycemic
index of carbohydrate food for people with and
without diabetes (Sugiyama et al., 2003; Johnston et
al., 2004). Antiglycemic effects of vinegar have been
known for more than a century and have been
demonstrated in animal as well as human studies
(Salbe et al., 2009). So that the objective of this work
was to investigate the antidiabetic effects and
hypocholestrolemic effect of different types of vinegar
(sugarcane, apple, grape, coconut, artificial and palm
vinegar) in rats.
2. Materials and Methods
Materials
Fructose sugar was purchased from Sigma-
Aldrich, St., and Louis, Mo, USA. Natural sugar
vinegar (Sugarcane vinegar, 6% acetic acid), Natural
apple vinegar (6 % acetic acid), Natural grape vinegar
(6%), Coconut vinegar (6% acetic acid), artificial
vinegar (6% acetic acid) and Palm vinegar (6% acetic
acid) were purchased from local market Cairo, Egypt.
Kits for blood analysis were purchased from
Biodiagnostic 29 Tahreer St., Dokki, Giza, Egypt.
Methods
HPLC analysis of organic acids in different types of
vinegar
Organic acids of different types of vinegar were
determined by a HPLC according to the method by
Zbigniew et al., 1991. 1ml of each sample was diluted
by 10 ml water and take 35 µl for injection into HPLC
Hewllet Packard (series 1050) equipped with auto
sampling injector, solvent degasser, ultraviolet (UV)
detector set at 210 nm and quaternary HP pump (series
1100). Packed column Hypesil BDS- C18, 4.0 x 250
mm was used to separate organic acid. The column
temperature was maintained at 55°C, at flow rate
1ml/min. Organic acid standard from Sigma Co. were
dissolved in a mobile phase (phosphoric acid) and
injected into HPLC. Retention time and peak area
were used to calculation of organic acids concentration
by data analysis of Hewllet Packard software.
HPLC analysis of phenolic compound in different
types of vinegar
Phenolic compound in different types of vinegar
were determined by HPLC according to the method of
Coupy et al., 1999. 1ml of sample was diluted by 10
ml water and take 100µl for injection into HPLC
Hewllet Packard (series 1050) equipped with auto
sampling injector, solvent degasser, ultraviolet
detector set at 280 nm and quaternary HP pump series
1100) . Packed column Hypesil BDS- C18, 4.0 x 250
mm was used to separation phenolic compound. The
column temperature was maintained at 35 °C. Gradient
separation was carried out with methanol and
acetonitrile as a mobile phase at flow rate of 1 ml/min.
phenolic acid standard from sigma Co. were dissolved
in mobile phase and injected into HPLC. Retention
time and peak area were used to calculation of
phenolic compounds concentration by data analysis of
Hewllet Packard software, Germany.
Animals and treatment
Normal forty eight male albino rats weighing 80-
100 grams were used for the study. They obtained
from animal house of El-Salam Farm, Giza, Egypt.
The animal housed individually in stainless steal cages
under controlled condition at constant temperature (22
°C) and lighting (12 h. light- dark cycle) and given
free access to food and water at all times. The rats
were divided randomly into eight groups, six rats each
and were fed on the following diets for six weeks:
Group1: Rats were fed on standard diet as served as
normal control (negative control group). Standard
diet was prepared according to Reeves et al., 1993.
It contained 14% casein, 5% cellulose, 3.5%
mineral mixture, 1% vitamin mixture, 0.25%
choline, 0.3% Dl-methionine, 5% oil and 65%
starch.
Group2: Rats were fed fructose rich diet (66%
fructose) as diabetic group (positive control group).
Fructose diet was prepared according to Yador et
al., 2004; Veerapur et al., 2010.
Group 3: Rats were fed on fructose rich diet +15%
natural sugarcane vinegar
Group 4: Rats were fed on fructose rich diet + 15%
natural apple vinegar
Group 5: Rats were fed on fructose rich diet + 15%
natural grape vinegar
Group 6: Rats were fed on fructose rich diet + 15%
natural coconut vinegar
Group 7: Rats were fed on fructose rich diet + 15%
artificial vinegar
Group 8: Rats were fed on fructose rich diet + 15%
Palm vinegar
Each rat has been weighted at the beginning and
the end of experimental and food intake was daily
recorded. At the end of experimental period (six
weeks), rats were sacrificed after overnight fasting.
The blood of each rat was collected in two tubes. The
first tub was containing sodium fluoride to preserve
glucose (to determination of glucose). The blood in the
second tube was centrifuged at 3000 rpm for 20
minutes to obtain the serum, which is kept at -20 °C
until analysis.
Chemical analysis
A- Serum glucose was determined according to
Trinder, 1969
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2143
B- Lipid Profiles
Serum total cholesterol (TC), LDL-c, HDL-c and
Triacylglycerol (TG) were measured by enzymatic
method using commercial kits according to
Richmond, 1973, Burstein et al., 1970, Wieland
and Seidel, 1983, Jacobs and Vandermark, 1960.
C -Kidney function
Serum creatinine and serum Urea were determined
according to Larson, 1972; Patton and Crouch,
1977
D- Liver enzyme
ALT and AST were determined by the method of
Reitman and Frankal, 1957.
E- Antioxidant enzyme in liver
Glutathione in liver was determined according to the
method by Beulter et al., 1963.
F- Hemoglobin concentration was performed using a
UDI- HMI automatic hematology analyzer
(France).
Histopathological assessment
At necropsy, stomach and pancreas were fixed in
10% buffered formalin until analysis. Tissue of
stomach and pancreas were routinely processed for
paraffin embedding and sections were prepared and
stained with hematoxylin and eosin (using light
microscopy). Histopathological assessment was
performed on all tissues of control group and treatment
Statistical analysis
Analysis of the data was of preventative variable
in the form mean ±SD by SPSS version 17.0 according
to Snedecoer and Cochran, 1967.
3. Results and Discussion
Data in Table (1) revealed that all of samples
vinegar was contained acetic acid and oxalic acid.
Acetic acid and succinic acid was major organic acid
in sugarcane, apple and grape vinegar. Oxalic, citric,
formic, ascorbic, acetic, succinic and malic acid could
be found in apple vinegar. These results are agreement
with Shahidi et al., 2008 indicated that acetic, citric,
malic, lactic, succinic, tartaric and fumaric acid could
be found in fruit vinegar including apple and grape.
Giumanin et al., 2001 found that apple vinegar
contained succinic, malic, glutaric, lactic, citric and
tartaric acid. Nevertheless, lactic, glutaric and tartaric
acids could not be detected in our apple vinegar.
Organic acid in fruit vinegar might source from
original material and be generated during fermentation
process (Shahidi et al., 2008). Artificial vinegar and
palm vinegar contained acetic acid and oxalic acid
only. Other organic acid could not be detected.
Meanwhile, oxalic, formic, ascorbic and acetic acids
could be found in coconut vinegar. Ascorbic acid
could be found only in sugarcane, apple, grape and
coconut.
Data in table (2) illustrated that the higher
concentration of catechin was detectable in apple
vinegar (13.24mg/100ml) followed by grape vinegar
(9.21mg/100ml), coconut vinegar and sugarcane
vinegar (0.43 and 0.21mg/100ml). Meanwhile, it is not
detectable in artificial and palm vinegar. Pyrogallol
was only identified and major compound in apple
vinegar (37.05mg/100ml). Higher concentration of
Salycillic was observed in artificial vinegar
(13.25mg/100ml) followed by palm vinegar
(8.50mg/100ml), grape vinegar (3.13mg/100ml), apple
vinegar (1.52mg/100ml), and coconut vinegar
(0.21mg/100ml). Different in phenolic compounds
may be due to different source of fruit used to produce
vinegar. Phenolic compounds have been shown to
good markers of the quality and origin of vinegar
(Galvez et al., 1995).
The serum blood glucose concentration elevated
from 134.0±4.94 mg/dl of control group to
187.53±4.75 mg/dl of diabetic group rats (Fig 1).
Vinegar reduced glucose concentration, rate of
decrease was 28.59%, 30.48%, 29.15%, 28.45%,
25.38% and 26.46% of sugarcane, apple, grape,
coconut, artificial and palm vinegars respectively. All
of types vinegar showed that significant decrease of
glucose compared to the diabetic group. Apple, grape
and sugarcane vinegar were the most effective
decrease of glucose. This could be due to possibility
the active ingredient in vinegar (acetic acid and
organic acid) to enhanced secretion of insulin from
beta cell. The higher effective of apple, grape and
sugarcane vinegar may be they contained more organic
acid than other types of vinegar. It is not known how
vinegar alters blood glucose concentration, but several
mechanisms have been proposed. Acetic acid in
vinegar may interfere with digestion of starch
molecules there by reducing the amount of glucose
absorbed into the blood stream after meal (Ogawa et
al., 2000). Other suggest that vinegar slows the rate of
gastric emptying and thus delays carbohydrate
absorption and improves satiety (O'Keefe et al., 2008),
and or acetic acid enhances uptake of glucose from the
blood stream into tissues thereby keeping blood
glucose concentration (Fushimi et al., 2001).Other
investigation for human found that 10 grams with a
meal was the most effective dose to lower blood
glucose levels (Johnston et al., 2010). Also the
consumption of apple cider vinegar slowed the rise of
blood sugar after the high carbohydrate vinegar
breakfast (Johnston et al., 2004).
Data in Table (3) revealed that there are no
significant differences in initial body weight P< 0.05
of eight groups. While different types of vinegar
administrated for 6 weeks demonstrated decreased in
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body weight gain compared to the control group. Since
the decrease in body weight gain was non significant
between diabetic group and treatment vinegar groups.
Acetic acid was considered to be the active ingredient
in vinegar that effected reduction body fat and body
weight gain (Kondo et al., 2009). These results are in
agreement with (Moon et al., 2010) who reported that
there were no significant difference in weight gain
among mice groups intake different diet with
persimmon vinegar. Another investigator examined
the effect daily vinegar ingestion on body weight of
human, he found that the health adults ingested 2
tables spoons of apple cider vinegar (1 g acetic acid)
twice daily for 4 week (Johnston, 2006) lead to body
loss an average of 1.6 pound where the control subject
gained 0.6 pound. Data in the same Table illustrated
that there are significant decrease P<0.05 in food
intake and feed efficiency ratio of all groups were
administrated of vinegar compared to the control
group. Meanwhile, no significant difference was
observed between diabetic group and other groups
were intake different types of vinegar. Decrease of
food intake may be due to decrease appetite of food
because a strong acidic taste and pungent smell of
vinegar .These results are in line with the results by
Moon et al., 2010 reported that there were no
significant different in feed consumption among all the
vinegar administrated groups.
Table (4) illustrated that the effect of different
types of vinegar on weight of organs. There are no
significant change in weight of organs for all rats was
administrated different types of vinegar.
Serum lipid profiles are shown in Table (5).
Serum TC and LDL-c concentration significantly
decreased P< 0.05 in all types of vinegar administrated
groups. Apple, grape, sugarcane and coconut vinegar
revealed reduction of TC and LDL-c more than
artificial and palm vinegar. These results may be due
to the apple, grape, sugarcane and coconut were
contained ascorbic acid (20.05%, 10.23, 2.33 and 0.34
mg/100ml) respectively behind acetic acid. McRac,
2008 reported that the supplementation with ascorbic
acid lower serum low density lipoprotein and total
cholesterol. These data may be due to the acetic acid
(active component in vinegar) reduced serum
cholesterol via the inhibition of hepatic lipogenesis
and the promotion of fecal bile acid excretion. Acetic
acid is converted to acetate in vitro, and acetate
metabolism by tissues activates AMPK which play a
key role in lipid homeostasis which may explain the
lipid lowering effects of ingested acetic acid in animals
(Yamashita et al., 2007). While HDL-c concentration
showed significantly increase compared to the diabetic
group, but there was no significant difference seen
among the vinegar administrated groups. Improved in
lipid profiles by vinegar were also observed in another
study with rats. Fushimi et al., 2006 reported that
serum TC decreased when 0.3% (w/w) acetic acid was
administrated for 19 days routine diet containing 1%
cholesterol. Moon et al., 2010 have reported similar
finding that a persimmon- vinegar decease serum TC
concentration in mice. Shishehbor et al., 2008 reported
that apple cider vinegar improved the serum lipid
profile in normal and diabetic rats by decreasing serum
LDL, TG and increasing serum HDL. TG in the same
Table revealed that increase in diabetic group
60.10±5.91 compared to the control group 40.37±7.45,
but there was no significant difference seen among the
vinegar administrated groups. These results not on line
with Fushimi et al., 2006 who reported that the vinegar
decrease TG.
Effect of administration of vinegar on liver
function and kidney function are shown in Table (6).
ALT and AST increased in diabetic group (48.30±2.67
and 49.07±1.43) compared to the control group
(30.60±2.37 and 30.57±6.6) respectively.
Administration of vinegar was decrease liver function
when compared to the diabetic group. The best results
of ALT and AST was observed in apple vinegar and
grape vinegar (rate of decrease was (52.23%, 26.77%
and 50.94% and 49.86%). Also, creatinine and urea
increased in diabetic group (3.97±1.0 and 23.73±2.16)
when compared to the control group (1.67±0.44 and
19.87±1.42) respectively. Vinegar administrations lead
to significant decrease in creatinine and urea P< 0.05
of all treatment when compared to the diabetic group.
The apple vinegar was the most efficiency in kidney
function. This results may be due to apple vinegar
have high levels from phenolic compounds specifically
catechin and pyrogallol, which prevent kidney from
destroyed induced by diabetic disease. Pitchai and
Manikkam, 2011 reported that the administration
catechin lowered urea and creatinine in diabetic rat.
Our results disagreement with Kondo et al., 2009 who
reported that there are no significant change in
measurements of liver function (AST and ALT) or
kidney function of two doses of apple vinegar. Data in
the same Table showed that there are no significant
differences between control, diabetic, sugarcane
vinegar and apple vinegar groups in hemoglobin
concentration. Meanwhile, grape vinegar group,
coconut vinegar group, artificial vinegar group and
palm vinegar group showed that significant decrease
P< 0.05 in hemoglobin concentration compared to the
diabetic group. Data in (Fig 2) showed that significant
decrease of glutathione in diabetic group, coconut
vinegar group, palm vinegar group (3.19±0.52 mM/L)
bc , (3.0±0.72)c and (3.20±0.10)bc compared to the
control group (4.95±0.65)a. Decrease of glutathione in
diabetic group may be due to increase in lipid
oxidation in fructose induced diabetic rats
(Suwamaphat et al., 2010). Decrease in glutathione of
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2145
coconut vinegar group and palm vinegar group may be
due to increase in catabolism of fructose caused the
reduction of total glutathione levels (Oda et al., 1994
and Reddy et al., 2009). Meanwhile, there are no
significant difference between other vinegar groups
and control group.
Histopathological Assessment
Pancreas
Microscopically, pancreas of rat from group 1
(control group) revealed no histopathological changes
(Fig 3). Meanwhile, pancreas of rats from group 2
(diabetic group) showed atrophy of islets of
langerhan’s and hyperplasia of ß cells of islets of
langerhan’s (Fig 4). This result agreement with
Riccillo et al., 2012 and Verma et al., 2012 reported
that the type-2 diabetic induce markedly abnormal
change in rat islets. Also, Balamurugan and
Ignacimuthu`, 2011 found that small atrophies islets
cells in diabetic control, whereas rats from groups 3 to
7 showed no histopathological changes (Figs 5 - 9).
Moreover some section from group 8 rats was fed on
palm vinegar revealed slight hyperplasia of ß cells of
islets of langerhan’s (Fig 10). These results are on line
with Xuemei, et al., 2012 reported that vinegar
improved pancreatic ß cell deficit in STZ- induced
diabetic in rats.
Stomach
Microscopically, stomach of rats from group 1
(control group) and diabetic group (group2) revealed
no histopathological changes (Figs 11 and 12).
Meanwhile, stomach of the rats from group 3 fed on
15% sugarcane vinegar showed few sub mucosal
inflammatory cells infiltration (Fig 13). However,
stomach of rats from group 4, 5, 6, 7 and 8 revealed no
histopathological changes (Figs 14 - 18). These data
suggest the vinegar intake at 15% concentration did
not effect on stomach tissues.
Table (1): HPLC analysis of organic acids in different types of vinegar
Organic
acids
Types of vine
gar
mg/100ml
Apple
mg/100ml
Grape
mg/100ml
Coconut
mg/100ml
Artificial
g/100ml
Palm
mg/100ml
Oxalic
47.65
12.47
23.82
2.40
1.13
5.41
Citric
Formic
54.97
-
95.70
96.85
19.70
-
-
10.80
-
-
-
-
Acetic
6380.32
6499.33
7336.27
8816.95
7210.37
7807.99
Ascorbic
20.05
10.23
2.33
0.34
-
-
Succinic
133.94
202.77
133.53
-
-
-
Malic
-
5.58
2.35
-
-
-
Table (2): HPLC analysis of phenolic compounds in different types of vinegar
Phenolic
compounds
Types of v
inegar
mg/100ml
Apple
mg/100ml
Grape
mg/100ml
Coconut
mg/100ml
Artificial
mg/100ml
Palm
mg/100ml
Gallic
0.03
-
-
0.03
-
0.02
Catechin
Ferulic
0.21
0.01
13.24
-
9.21
-
0.43
0.01
-
0.03
-
0.02
Benzoic
0.36
-
-
0.36
-
-
Pyrogallol
-
37.05
-
-
-
-
Protocatechuic
-
1.48
-
-
-
-
Catechol
Vanillic
P-Coumaric
Salycilic
Chlorogenic
Caffeic
Caffien
Coumarin
-
-
-
-
-
-
-
-
1.08
0.52
0.24
1.52
-
-
-
-
-
0.73
-
3.13
2.16
0.70
0.50
-
-
-
-
0.21
-
0.01
-
-
-
-
-
13.25
-
-
-
0.46
-
-
-
8.50
-
0.01
-
0.29
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Table (3): Effect of different types of vinegar on body weight, food intake and feed efficiency
Groups
IBW* (gm)
Mean ±SD
FBW
°
(gm)
Mean ±SD
BWG
(gm)
Mean ±SD
Food intake
daily
Means ±SD
Feed
efficiency ratio
(FER)
Means ±SD
1
-
Control
84.15±3.11
a
141.65±16.3
a
57.5±17.4
a
8.47±0.67
a
6.79±1.09
a
2
-
Datbetic
85.17±1.91
a
99.13±4.7
b
13.97±5.12
b
5.56±1.3
bc
2.64±2.09
b
3
-
Sugarcane
vinegar
83.53 ±1.61
a
102.67±7.05
b
19.13±6.50
b
4.73±0.66
c
4.13±1.55
b
4
-
Apple vinegar
83.0±3.12
a
104
.03±11.30
b
21.03±11.37
b
5.98
±0.61
b
3.62±2.06
b
5
-
Grape vinegar
86.07±3.6
a
104.22±5.97
b
18.20±6.67
b
5.27±0.32
bc
3.89±0.97
b
6
-
coconut vinegar
85.86±4.03
a
104.57±9.03
b
18.70±9.90
b
5.82±0.21
bc
3.24±1.81
b
7
-
Artificial vinegar
84.63±1.73
a
101.10±16.47
b
18.7
7±13.57
b
5.95±1.2
b
3.23±2.20
b
8
-
Palm vinegar
84.0±2.12
a
97.97±3.19
b
13.97±5.12
b
6.23±1.2
b
2.25±0.81
b
Initial body weight* Final body weight°, Body weight gain‡
Table (4): Effect of different types of vinegar on weight of organs
Group
Weight
of Heart
g/kg
Weight of
Liver
g/kg
Weight
of Kidney
g/kg
Weight of
Spleen
g/kg
1
-
Control
0.366
±
5.16
a
4.80± 0.32
a
0.767±5.16
a.
0.267±0.02
a
2
-
Diabetic
0.366 ±5.16
a
4.53
±0.65
a
0.733±5.16
a
0.233±0.02
a
3
-
Sugarcane vinegar
0.400 ± 0.0
a
4.30±0.98
a
0.733±1.37
a
0
.267±0.02
a
4
-
Apple vinegar
0.367± 0.15
a
5.10± 0.62
a
0.767
±5.16
a
0.233±0.02
a
5
-
Grape vinegar
0.367±0.10
a
4.30±1.03
a
0.700±0.0
a
0.267±0.02
a
6
-
Coconut vinegar
0.400±8.9
a
4.53±0.41
a
0.800±8.9
a
0.267±0.02
a
7
-
Artificial vinegar
0.400 ±8.9
a
4.833±0.45
a
0
.762±4.60
a
0.233±0.02
a
8
-
Palm vinegar
0.400 ±0.0
a
4.47±0.22
a
0.767±5.16
a
0.300±0.02
a
Table (5): Effect of different types of vinegar on lipid profile
Group
Total
Cholesterol
mg/dl
Total
Triacylglycerol
mg/dl
HDL
Cholesterol
mg/dl
LDL
Cholesterol
mg/dl
1
-
Control
200.27
±
0.95
e
40.37± 7.45
b
44.83±6.91
a.
147.36±8.23
d
2
-
Diabetic
260.93 ±1.37
a
60.10
±5.91
a
35.0±3.34
b
213.91±2.04
a
3
-
Sugarcane vinegar
233.57 ± 12.5
cd
55.07±11.09
a
44.83±6.20
a
177.72±14.8
bc
4
-
Apple vinegar
220.4 ± 23.5
d
52.73± 3.13
a
46
.67±10.6
a
163.19±12.7
c
5
-
Grape vinegar
225.23±9.48
d
53.83±9.7
a
46.37±4.60
a
167.86±20.9
c
6
-
Coconut vinegar
242.87±10.8
bc
58.97±5.38
a
44.03±4.19
a
189.82±12.6
b
7
-
Artificial vinegar
244.47±9.86
bc
55.03±9.4
a
40.53±4.2
ab
191.57±12.9
b
8
-
Palm vinegar
253.8
3±9.48
ab
53.07±6.59
a
34.80±5.41
a
207.22±6.11
a
Table (6): Effect of different types of vinegar on liver and kidney functions and Hemoglobin
Group
ALT
(µl/dl)
Mean± SD
AST
µl/dl)
Mean± SD
Creatinine
mg/dl)
Mean± SD
Urea
mg/dl)
Mean± SD
Hemoglobin
mg/dl
Mean± SD
1
-
Control
30.60±2.37
c
30.57±6.6
c
1.67±0.44
e
19.87±1.42
bcd
13.03
±
0.37
abc
2
-
Diabetic
48.30±2.67
a
49.07±1.43
a
3.97±0.10
a
23.73±2.16
a
13.57
±
0.68
a
3
-
Sugarcane vinegar
37.20±4.43
b
33.53±4.72
bc
2.65±0.41
cd
19.57±0.77
cd
13.70±1.08
a
4
-
Apple v
inegar
23.07±2.04
c
24.07±4.83
d
2.90±0.02
bc
17.93±1.65
e
13.40±0.70
ab
5
-
Grape vinegar
35.37±5.48
bc
24.60
±6.60
d
2.97±0.10
bc
18.97±1.25
de
11.37
±
0.67
c
6
-
Coconut vinegar
37.40±3.03
b
33.43±3.58
bc
3.83±0.49
a
20.73±0.52
bc
12.13
±
1.15
bcd
7
-
Artificial vinegar
39
.50±6.35
b
38
.87±5.23
b
3.17±0.42
b
20.30±0.72
bcd
11.90±1.09
cd
8
-
Palm vinegar
38.13±3.10
b
23.17±5.09
d
2.30±0.47
d
21.47± 1.28
b
12.47±1.76
abcd
Life Science Journal 2012;9(4) http://www.lifesciencesite.com
2147
0
20
40
60
80
100
120
140
160
180
200
Control
Diabetic
Sugarcane vinegar
Apple vinegar
Grape vinegar
Cocount inegar
Artificial vinegar
Palm vinegar
Types of vinega r
levels of glucose mg/d l
Fig (1): Effect of different types of vinegar on
glucose level
0
20
40
60
80
100
120
140
160
180
200
Control
Diabetic
Sugarcane vinegar
Apple vinegar
Grape vinegar
Cocount inegar
Artificial vinegar
Palm vinegar
Types of vinega r
levels of glucose m g/dl
Fig (2): Effect different types of vinegar on
glutathione levels
Fig (3): pancreas of control group (1) showing no
histopathological Change (X-400)
Fig (4): Pancreas of diabetic rat (group2) showing
atrophy of Islets and hyperplasia of B cells of
langerhans (X-400)
Fig (5): Pancreas of rats from group 3 fed sugarcane
vinegar showing no Histopathological changes
(X-400)
Fig (6): Pancreas of rats from group 4 fed on apple
vinegar showing no Histopathological change (X-
400)
Fig (7): Pancreas of rats from group5 fed on grape
vinegar showing no Histopathological changes
(X-400)
Fig (8): Pancreas of rats from group 6 fed on coconut
vinegar showing no Histopathological change (X-
400)
Life Science Journal 2012;9(4) http://www.lifesciencesite.com
2148
Fig (9): Pancreas of rats from group 7 fed On artificial
vinegar showing no Histopatological changes (X-
400)
Fig (10): Pancreas pf rats from group 8 fed on palm
vinegar showing slight Hyperplasia of B cells of
islets of langerhan’s (X-400)
Fig (11): Stomach of control group (1) showing no
histopathological Change (X-400)
Fig (12) Stomach of diabetic rat (group2) showing no
histopathological Change (X-400)
Fig (13): Stomach of rats from group 3 fed on
sugarcane vinegar showing few sub mucosal cells
infiltration (X-400)
Fig (14): Stomach of rats from group 4 fed on apple
vinegar showing no Histopathological changes
(X-400
Fig (15): Stomach of rats from group5 fed on grape
vinegar showing no histopathological changes
(X-400)
Fig (16): Stomach of rats from group 6 fed on coconut
vinegar showing no histopathological change (X-
400)
Life Science Journal 2012;9(4) http://www.lifesciencesite.com
2149
Fig (17): Stomach of rats from group7 Fed on artificial
vinegar showing no hiatopathological change (X-
400)
Fig (18): Stomach of rats from group 8 fed on palm
vinegar showing no histopathological changes
(X-400)
Conclusion
Vinegar has potential benefits of diabetic rats
thought decrease glucose concentration and
cholesterol. Apple vinegar and grape vinegar were
the more effective to decrease total cholesterol and
LDL-c than the other types of vinegar. Moreover,
they were caused increase of HDL-c more than the
other types of vinegar. Apple vinegar and grape
vinegar decreased AST, ALT, urea and creatinine
more than the sugarcane, coconut, artificial and
palm vinegar. They contained more organic acid
and phenolic compound than the other vinegar.
Apple vinegar contained the highest concentration
of catechin. Pyrogallol, protocatechuic, catechol, p-
coumaric was only detectable in apple vinegar.
Apple and sugarcane vinegar has no effect on
hemoglobin concentration. Glutathione was
decrease in diabetic group, coconut vinegar group
and palm vinegar group. Apple vinegar followed
grape, sugarcane, coconut, artificial and apple
vinegar consider antidiabetic and
hypocholestrolemic effect in diabetic rat. Different
type of vinegar has protective effect of pancreas and
did not effect on stomach with 15% concentration
for 6 weeks. So that using vinegar has a beneficial
effect of diabetic disease in rats.
Acknowledgement
We wish to acknowledge Dr. Kawkab Abd-
Elaziz Ahmed professor of Histology in Faculty of
Veterinary Medicine, Cairo University for her
expertise and assistance in clarifying and explaining
the changes in tissue slices of organs.
Corresponding author
Sahar S.A. Soltan
Department of Home Economics (Nutrition and
Food Science), Faculty of Specific Education,
Fayoum University, Fayoum, Egypt
ssamsoltan@hotmail.com
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