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Chemical Characteristics and Mineral Contents in Whole rice grains, Hulls, Brown rice, Bran and Polished Ali Kazemi Rice in Gilan province - North of Iran

IJFAS 12/2013; 2(24):1203-1209.

ABSTRACT ABSTRACT: In this study, the concentrations of some mineral elements in whole rice grains, hulls, brown rice, bran and polished rice from 10 major Alikazemi rice farmlands from 10 cities: Rasht, Shaft, Khomam, Masal, Soumahe Sara, Roudbar, Fuman, Astaneh-e Ashrafiyyeh Lashtenesha, Kochesfehan from Gilan province in the north of Iran in 2013 were determined by Atomic Absorption Spectrophotometer. All samples were collected in during harvesting of rice (August to late September 2013 ) in Gilan fields. Fat binding capacity (FBC) and water binding capacity (WBC) contents of rice bran and husk fibers varied significantly (p<0.05) in different paddy fields from different cities in Gilan Province. Rudbar samples has the highest level of WBC in rice bran and husk fibers while Astaneh-e Ashrafiyyeh samples has the highest level of FBC. The results of this research revealed that the removal of husk layer during dehusking and polishing substantially reduces the mineral nutrient value of rice grains. In general, the bran contains higher levels of iron, Manganese and Copper. Mn and Cu were mainly located in the hull while Iron and Zinc located in the bran. Polishing substantially reduces the mineral nutrient value of rice grains as only 2% of the total manganese 6% of the total Zn and Fe , 1% of Cu remained in polished rice and mainly parts of mineral elements were removed by the milling process if the hull and bran were thoroughly polished.

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Available from: Parisa Ziarati, Dec 31, 2013
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    • "Today, the population growth in Iran's domestic production of rice to meet the needs of the people and therefore, a significant amount of this product is imported from abroad despite Iran's rice acreage is only 600 hectares, the amount of land under cultivation is very small world. But there are different varieties and has a central role in discussions of research and research training is remarkable [17]. Rice properties are known to be dependent on the variety of rice, methods of cultivation, processing and cooking conditions. "
  • Source
    • "Today, the population growth in Iran's domestic production of rice to meet the needs of the people and therefore, a significant amount of this product is imported from abroad despite Iran's rice acreage is only 600 hectares, the amount of land under cultivation is very small world. But there are different varieties and has a central role in discussions of research and research training is remarkable [17]. Rice properties are known to be dependent on the variety of rice, methods of cultivation, processing and cooking conditions. "
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    ABSTRACT: It has been reported that as much as 75% of the daily calorie intake of the people in some Asian countries is derived from rice. At harvest time (August to late September 2013) 800 Alikazemi rice samples were randomly collected and were studied in states of: Whole rice grains, Brown and Polished in 4 different states of heating and cooking processes: Raw , Rinsed, Cooked and Drained. Samples collected from ten major farmland rice production areas in Gilan province in the north of Iran from cities due to investigation the effect of milling, cooking and heating processes in polished and brown rice samples on their mineral and heavy metal contents(Mn, Zn, Fe, Pb, Cd and As) and find the best cooking methods in order to avoid the side effects of heavy metals in edible an consumed rice and also assess the associated health risk posed to the population through exposure to heavy metals (Arsenic, Cadmium and Lead) in rice. Results show that rinsing samples especially after 4 times has the significant role (p< 0.002) in decreasing the cadmium and lead contents. The results of this research revealed that the removal of husk layer during dehusking and polishing substantially reduces the mineral nutrient value of rice grains. In general, the bran contains higher levels of iron, Manganese and Zinc. Polishing substantially reduces the mineral nutrient value of rice grains. The results give us the possibility to process brown rice to obtain Low toxic and heavy metals contents at a relatively high zinc, Iron and Manganese content.
  • Source
    • "Today, the population growth in Iran's domestic production of rice to meet the needs of the people and therefore, a significant amount of this product is imported from abroad despite Iran's rice acreage is only 600 hectares, the amount of land under cultivation is very small world. But there are different varieties and has a central role in discussions of research and research training is remarkable [17]. Rice properties are known to be dependent on the variety of rice, methods of cultivation, processing and cooking conditions. "
    [Show abstract] [Hide abstract]
    ABSTRACT: It has been reported that as much as 75% of the daily calorie intake of the people in some Asian countries is derived from rice. At harvest time (August to late September 2013) 800 Alikazemi rice samples were randomly collected and were studied in states of: Whole rice grains, Brown and Polished in 4 different states of heating and cooking processes: Raw , Rinsed, Cooked and Drained. Samples collected from ten major farmland rice production areas in Gilan province in the north of Iran from cities due to investigation the effect of milling, cooking and heating processes in polished and brown rice samples on their mineral and heavy metal contents(Mn, Zn, Fe, Pb, Cd and As) and find the best cooking methods in order to avoid the side effects of heavy metals in edible an consumed rice and also assess the associated health risk posed to the population through exposure to heavy metals (Arsenic, Cadmium and Lead) in rice. Results show that rinsing samples especially after 4 times has the significant role (p< 0.002) in decreasing the cadmium and lead contents. The results of this research revealed that the removal of husk layer during dehusking and polishing substantially reduces the mineral nutrient value of rice grains. In general, the bran contains higher levels of iron, Manganese and Zinc. Polishing substantially reduces the mineral nutrient value of rice grains. The results give us the possibility to process brown rice to obtain Low toxic and heavy metals contents at a relatively high zinc, Iron and Manganese content.
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