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Effect of chemical treatment and tortilla processing on tannin content and protein digestibility of two Egyptian sorghum cultivars [electronic resource].

By:

Sorour, M. A .H

Contributor(s):

Ramadan, B. R

Language: English Summary language: Arabic Description: p.1665-1677Other title:

تأثير المعاملة الكيميائية وتصنيع خبز التورتيلا على محتوى التانينات وهضم البروتين لصنفين من الذرة الرفيعة المنزرعة فى مصر [Added title page title]

Uniform titles:

Zagazig journal of agricultural research, 2002 v. 29 (5) [electronic resource].

Subject(s):

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In: Zagazig Journal of Agricultural Research 2002.v.29(5)Summary: sorghum cultivar (Assiut 14) and a tunnin-free sorghum cultivar (Dorado) Tannin-containing were used for this study. Tannin contents of untreated sorghum grains were 0.84% for low-tannin sorghum grains and 2.46% for high-tannin sorghum grains. In-vitro protein digestibilities (IVPD) were 84.31% and 82.35% for the two cultivars, respectively. Soaking of sorghim grains in water at 30°C for 24 hrs. improved IVPD and reduced tannin content to 0.60% and 1.36% for Dorndo and Assiut 14 cultivars, respectively . Cooking in water at 100°C for 30 min gave similar results approximately, but in a short time. Soaking of high tannin sorghum at 30°C in 0.01 and 0.05 M sodium hydroxyde removed 67-80% of the tannins in 24 hrs. Under similar conditions, 0.01 and 0.05 M CalCium hydroxide removed 65 and 75% of tannins content, respectively.

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sorghum cultivar (Assiut 14) and a tunnin-free sorghum cultivar (Dorado) Tannin-containing were used for this study. Tannin contents of untreated sorghum grains were 0.84% for low-tannin sorghum grains and 2.46% for high-tannin sorghum grains. In-vitro protein digestibilities (IVPD) were 84.31% and 82.35% for the two cultivars, respectively. Soaking of sorghim grains in water at 30°C for 24 hrs. improved IVPD and reduced tannin content to 0.60% and 1.36% for Dorndo and Assiut 14 cultivars, respectively . Cooking in water at 100°C for 30 min gave similar results approximately, but in a short time. Soaking of high tannin sorghum at 30°C in 0.01 and 0.05 M sodium hydroxyde removed 67-80% of the tannins in 24 hrs. Under similar conditions, 0.01 and 0.05 M CalCium hydroxide removed 65 and 75% of tannins content, respectively.

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