Benefits and uses of pineapple

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Joy PP. 2010. Benefits and uses of pineapple. Pineapple Research Station (Kerala Agricultural University),
Vazhakulam-686 670, Muvattupuzha, Ernakulam District, Kerala, India.
Benefits and Uses of Pineapple
Dr. P. P. Joy, Associate Professor & Head, Pineapple Research Station (Kerala Agricultural University), Vazhakulam-686 670,
Muvattupuzha, Ernakulam, Kerala, India. Tel. & Fax: +914852260832, Email: prsvkm@gmail.com, Web: www.kau.edu/prsvkm
Functional benefits
Pineapple (Ananus comosus, Bromeliaceae) is a wonderful tropical fruit having exceptional
juiciness, vibrant tropical flavour and immense health benefits. Pineapple contains considerable
calcium, potassium, fibre, and vitamin C. It is low in fat and cholesterol. Vitamin C is the body's
primary water soluble antioxidant, against free radicals that attack and damage normal cells. It is
also a good source of vitamin B1, vitamin B6, copper and dietary fibre. Pineapple is a digestive aid
and a natural Anti-Inflammatory fruit. A group of sulfur-containing proteolytic (protein digesting)
enzymes (bromelain) in pineapple aid digestion. Fresh pineapples are rich in bromelain used for
tenderizing meat. Bromelain has demonstrated significant anti-inflammatory effects, reducing
swelling in inflammatory conditions such as acute sinusitis, sore throat, arthritis and gout and
speeding recovery from injuries and surgery. Pineapple enzymes have been used with success to
treat rheumatoid arthritis and to speed tissue repair as a result of injuries, diabetic ulcers and general
surgery. Pineapple reduces blood clotting and helps remove plaque from arterial walls. Studies
suggest that pineapple enzymes may improve circulation in those with narrowed arteries, such as
angina sufferers. Pineapples are used to help cure bronquitis and throat infections. It is efficient in
the treatment of arterioscleroses and anaemia. Pineapple is an excellent cerebral toner; it combats
loss of memory, sadness and melancholy. Pineapple fruits are primarily used in three segments,
namely, fresh fruit, canning and juice concentrate with characteristic requirements of size, shape,
colour, aroma and flavour.
Potential Anti-Inflammatory and Digestive Benefits
Bromelain is a complex mixture of substances that can be extracted from the stem and core fruit of
the pineapple. Among dozens of components known to exist in this crude extract, the best studied
components are a group of protein-digesting enzymes (called cysteine proteinases). Originally,
researchers believed that these enzymes provided the key health benefits found in bromelain, a
popular dietary supplement containing these pineapple extracts. In addition, researchers believed
that these benefits were primarily limited to help with digestion in the intestinal tract. However,
further studies have shown that bromelain has a wide variety of health benefits, and that many of
these benefits may not be related to the different enzymes found in this extract. Excessive
inflammation, excessive coagulation of the blood, and certain types of tumor growth may all be
reduced by therapeutic doses of bromelain when taken as a dietary supplement. Studies are not
available, however, to show these same potential benefits in relationship to normal intake of
pineapple within a normal meal plan.
Bromelain extracts can be obtained from both the fruit core and stems of pineapple. Potentially
important chemical differences appear to exist between extracts obtained from the stem versus the
fruit core. However, the practical relevance of these differences is not presently understood. Most of
the laboratory research on bromelain has been conducted using stem-based extracts, however.

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Joy PP. 2010. Benefits and uses of pineapple. Pineapple Research Station (Kerala Agricultural University),
Vazhakulam-686 670, Muvattupuzha, Ernakulam District, Kerala, India.
Although healthcare practitioners have reported improved digestion in their patients with an
increase in pineapple as their "fruit of choice" within a meal plan, there are no published studies that
document specific changes in digestion following consumption of the fruit (versus supplementation
with the purified extract. However, it is suspected that the fruit core will eventually turn out to show
some unique health-supportive properties, including possible digestion-related and anti-
inflammatory benefits.
Antioxidant Protection and Immune Support
Vitamin C is the body's primary water-soluble antioxidant, defending all aqueous areas of the body
against free radicals that attack and damage normal cells. Free radicals have been shown to promote
the artery plaque build-up of atherosclerosis and diabetic heart disease, cause the airway spasm that
leads to asthma attacks, damage the cells of the colon so they become colon cancer cells, and
contribute to the joint pain and disability seen in osteoarthritis and rheumatoid arthritis. This would
explain why diets rich in vitamin C have been shown to be useful for preventing or reducing the
severity of all of these conditions. In addition, vitamin C is vital for the proper function of the
immune system, making it a nutrient to turn to for the prevention of recurrent ear infections, colds,
and flu.
Manganese and Thiamin for Energy Production and Antioxidant Defenses
Pineapple is an excellent source of the trace mineral manganese, which is an essential cofactor in a
number of enzymes important in energy production and antioxidant defenses. For example, the key
oxidative enzyme superoxide dismutase, which disarms free radicals produced within the
mitochondria (the energy production factories within our cells), requires manganese. Just one cup of
fresh pineapple supplies 128.0% of the DV for this very important trace mineral. In addition to
manganese, pineapple is a good source of thiamin (Vitamin B1) that acts as a cofactor in enzymatic
reactions central to energy production.
Protection against Macular Degeneration
Fruits are more important than carrots for eye sight. Data reported in a study published in
the Archives of Ophthalmology indicates that eating 3 or more servings of fruit per day may lower
the risk of age-related macular degeneration (ARMD), the primary cause of vision loss in older
adults, by 36%, compared to persons who consume less than 1.5 servings of fruit daily.
In this study, which involved over 110,000 women and men, researchers evaluated the effect of
study participants' consumption of fruits; vegetables; the antioxidant vitamins A, C, and E; and
carotenoids on the development of early ARMD or neovascular ARMD, a more severe form of the
illness associated with vision loss. While, surprisingly, intakes of vegetables, antioxidant vitamins
and carotenoids were not strongly related to incidence of either form of ARMD, fruit intake was
definitely protective against the severe form of this vision-destroying disease. Three servings of
fruit may sound like a lot to eat each day, but pineapple can help you reach this goal. Add fresh
pineapple to your morning smoothie, lunch time yogurt, any fruit and most vegetable salads. For
example, try adding chunks of pineapple to your next coleslaw or carrot salad.

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Joy PP. 2010. Benefits and uses of pineapple. Pineapple Research Station (Kerala Agricultural University),
Vazhakulam-686 670, Muvattupuzha, Ernakulam District, Kerala, India.
Nutritional Value
Given here is the value of different nutrients in 100 grams of pineapple.
Calcium - 16 mg
Energy- 52 Calories
Carbohydrates - 13.7 gm
Dietary Fibre - 1.4 gm
Iron - 0.28 mg
Magnesium - 12 mg
Protein - 0.54 g
Phosphorus - 11 mg
Potassium - 150 mg
Vitamin A - 130 I.U
Vitamin B1 - 0.079 mg
Vitamin B2 - 0.031 mg
Vitamin B3 - 0.489 mg
Vitamin B6 - 0.110 mg
Vitamin C - 24 mg
Zinc - 0.10 mg
Nutritional and Health Benefits
One of the juiciest fruits that is absolutely a delight to eat is the pineapple. It can be taken with
whipped cream, custard or just like that. Pineapple juice is equally yummy and refreshing and is one
of the favorite drinks of many people during hot weather. The best part about pineapples is that it is
loaded with nutrients and beneficial enzymes, which ensures that you not only have a healthy body
but also a glowing complexion.
Pineapple is known to be very effective in curing constipation and irregular bowel movement. This
is because it is rich in fibre, which makes bowel movements regular and easy.
For any kind of morning sickness, motion sickness or nausea, drink pineapple juice. It works
effectively in getting rid of nausea and vomiting sensation.
It has virtually no fat and cholesterol and is loaded with essential nutrients and vitamins that are
needed by the body for overall growth and development.
Juice from fresh pineapple can be used to relieve bronchitis, diphtheria and chest congestion. Not
only does it have enough amounts of Vitamin C, but it also contains an enzyme called Bromelain,
which is known to dissolve and loosen up mucus.
Pineapple is effective in getting rid of intestinal worms and also keeps the intestines and kidneys
clean. It is effective in flushing out the toxins from the body, thus making the metabolism healthy.
Pineapples are very rich in manganese and even a single cup of pineapple is supposed to contain a
good amount of it. This mineral is required for the growth of healthy bones and tissues.

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Joy PP. 2010. Benefits and uses of pineapple. Pineapple Research Station (Kerala Agricultural University),
Vazhakulam-686 670, Muvattupuzha, Ernakulam District, Kerala, India.
High content in Vitamin C ensures that oral health remains in top condition always. It helps prevent
gum disease and also prevents the formation of plaque, thus keeping the teeth healthy.
Food Uses
In Puerto Rico and elsewhere in the Caribbean, Spaniards found the people soaking pineapple slices
in salted water before eating, a practice seldom heard of today.
Field ripe fruits are best for eating fresh, and it is only necessary to remove the crown, rind, eyes
and core. In Panama, very small pineapples are cut from the plant with a few inches of stem to serve
as a handle, the rind is removed except at the base, and the flesh is eaten out-of-hand like corn on
the cob. The flesh of larger fruits is cut up in various ways and eaten fresh, as dessert, in salads,
compotes and otherwise, or cooked in pies, cakes, puddings, or as a garnish on ham, or made into
sauces or preserves. Malayans utilize the pineapple in curries and various meat dishes. In the
Philippines, the fermented pulp is made into a popular sweetmeat called nata de pina. The
pineapple does not lend itself well to freezing, as it tends to develop off flavours.
Canned pineapple is consumed throughout the world. The highest grade is the skinned, cored fruit
sliced crosswise and packed in syrup. Undersize or overripe fruits are cut into "spears", chunks or
cubes. Surplus pineapple juice used to be discarded after extraction of bromelain (q.v.). Today there
is a growing demand for it as a beverage. Crushed pineapple, juice, nectar, concentrate, marmalade
and other preserves are commercially prepared from the flesh remaining attached to the skin after
the cutting and trimming of the central cylinder. All residual parts cores, skin and fruit ends are
crushed and given a first pressing for juice to be canned as such or prepared as syrup used to fill the
cans of fruit, or is utilized in confectionery and beverages, or converted into powdered pineapple
extract which has various roles in the food industry. Chlorophyll from the skin and ends imparts a
greenish hue that must be eliminated and the juice must be used within 20 hours as it deteriorates
quickly. A second pressing yields "skin juice" which can be made into vinegar or mixed with
molasses for fermentation and distillation of alcohol.
In Africa, young, tender shoots are eaten in salads. The terminal bud or "cabbage" and the
inflorescences are eaten raw or cooked. Young shoots, called "hijos de pina" are sold on vegetable
markets in Guatemala.
Food Value Per l00 g of Edible Portion*
Moisture 81.3-91.2 g
Ether Extract 0.03 0.29 g
Crude Fibre 0.3-0.6 g
Nitrogen
0.038
-
0.098 g
Ash
0.21
-
0.49 g
Calcium
6.2 3
7.2 mg
Phosphorus 6.6-11.9 mg
Iron 0.27-1.05 mg

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Joy PP. 2010. Benefits and uses of pineapple. Pineapple Research Station (Kerala Agricultural University),
Vazhakulam-686 670, Muvattupuzha, Ernakulam District, Kerala, India.
Carotene 0.003 0.055 mg
Thiamine
0.048 0.138 mg
Riboflavin
0.011
-
0.04 mg
Niacin 0.13-0.267 mg
Ascorbic Acid
27.0-165.2 mg
*Analyses of ripe pineapple made in Central America.
Sugar/acid ratio and ascorbic acid content vary considerably with the cultivar. The sugar content
may change from 4% to 15% during the final 2 weeks before full ripening.
Toxicity
When unripe, the pineapple is not only inedible but poisonous, irritating the throat and acting as a
drastic purgative.
Excessive consumption of pineapple cores has caused the formation of fibre balls (bezoars) in the
digestive tract.
Other Uses
Bromelain
The proteolytic enzyme, bromelain, or bromelin, was formerly derived from pineapple juice; now it
is gained from the mature plant stems salvaged when fields are being cleared. The yield of
bromelain from stem juice is 2.15%. The enzyme is used like papain from papaya for tenderizing
meat and chill proofing beer; is added to gelatin to increase its solubility for drinking; has been used
for stabilizing latex paints and in the leather-tanning process. In modern therapy, it is employed as a
digestive and for its anti-inflammatory action after surgery, and to reduce swellings in cases of
physical injuries; also in the treatment of various other complaints.
Fibre
Pineapple leaves yield a strong, white, silky fibre which was extracted by Filipinos before 1591.
Certain cultivars are grown especially for fibre production and their young fruits are removed to
give the plant maximum vitality. The 'Perolera' is an ideal cultivar for fibre extraction because its
leaves are long, wide and rigid. Chinese people in Kwantgung Province and on the island of Hainan
weave the fibre into coarse textiles resembling grass cloth. It was long ago used for thread in
Malacca and Borneo. In India, the thread is prized by shoemakers and it was formerly used in the
Celebes. In West Africa, it has been used for stringing jewels and also made into capes and caps
worn by tribal chiefs. The people of Guam hand-twist the fibre for making fine casting nets. They
also employ the fibre for wrapping or sewing cigars. Pina cloth made on the island of Panay in the
Philippines and in Taiwan is highly esteemed. In Taiwan, they also make a coarse cloth for farmers'
underwear.

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Joy PP. 2010. Benefits and uses of pineapple. Pineapple Research Station (Kerala Agricultural University),
Vazhakulam-686 670, Muvattupuzha, Ernakulam District, Kerala, India.
The outer, long leaves are preferred for fibre. In the manual process, they are first decorticated by
beating and rasping and stripping, and then left to ret in water to which chemicals may be added to
accelerate the activity of the microorganisms which digest the unwanted tissue and separate the
fibres. Retting time has been reduced from 5 days to 26 hours. The retted material is washed clean,
dried in the sun and combed. In mechanical processing, the same machine can be used that extracts
the fibre from sisal. Estimating 22 leaves/kg, 22,000 leaves would constitute one tonne and would
yield 22-27 kg of fibre.
Juice
Pineapple juice has been employed for cleaning machete and knife blades and, with sand, for
scrubbing boat decks.
Animal Feed
Pineapple crowns are sometimes fed to horses if not needed for planting. Final pineapple waste
from the processing factories may be dehydrated as "bran" and fed to cattle, pigs and chickens.
"Bran'' is also made from the stumps after bromelain extraction. Expendable plants from old fields
can be processed as silage for maintaining cattle when other feed is scarce. The silage is low in
protein and high in fibre and is best mixed with urea, molasses and water to improve its nutritional
value.
In 1982, public concern in Hawaii was aroused by the detection of heptachlor (a carcinogen) in the
milk from cows fed "green chop" leaves from pineapple plants that had been sprayed with the
chemical to control the ants that distribute mealy bugs. There is supposed to be a one year lapse to
allow the heptachlor to become more dilute before sprayed plants are utilized for feed.
Folk Medicine
Pineapple juice is taken as a diuretic and to expedite labour, also as a gargle in cases of sore throat
and as an antidote for sea sickness. The flesh of very young (toxic) fruits is deliberately ingested to
achieve abortion (a little with honey on 3 successive mornings); also to expel intestinal worms; and
as a drastic treatment for venereal diseases. In Africa the dried, powdered root is a remedy for
edema. The crushed rind is applied on fractures and the rind decoction with rosemary is applied on
hemorrhoids. Indians in Panama use the leaf juice as a purgative, emmenagogue and vermifuge.
Ornamental Value
The pineapple fruit with crown intact is often used as a decoration and there are variegated forms of
the plant universally grown for their showiness indoors or out. Since 1963, thousands of potted,
ethylene treated pineapple plants with fruits have been shipped annually from southern Florida to
northern cities as indoor ornamentals.