食品科学与技术(双语)重点.doc

29. What are the final products of wheat wet milling? What about their uses? -main products: starch, 66%; 湿磨终产物 -by products: oil, 4%; animal feed, 30%, including 24%, gluten feed (PC, 21%) and 5.7% gluten meal (PC, 60%). Uses: -modified starch; -sweeter; -alcohol; -others 30. What are the uses of vital gluten? 活力粉用途 -improving the texture and raising the protein content; -forming an extensible, elastic mass; -fortification of week hour; -high protein break making; -high fiber bread making; -others, meat products, e.g. sausages, breakfast food. 1.What’s defination of oils and fats? 油脂分类 Edible fats and oils are esters of the three carbon trihydric alcohol, glycerin, and various straight chained monocarboxylic acids known as fatty acids. 2.what’s the major and minor component of edible oils and fats? Triglyceride; 食用油和油脂 主次成分 Diglyceride monoglyceride phospholipids sterol cholesterol tocopherol pigments 3 What are the major fatty acids of oils and fats? 油脂主要脂肪酸 Palmitic oils stearic oils oleic linoleic linolenic 4.Classification of oils and fats 油脂分类 Saturated monounsaturated polyunsaturated 5.Iodine vaule 碘值 he number of centigrams iodine absorbed by 1g of fat or percentage iodine absorbed. 6. Saponification value : 皂化值 the weight in milligrams of potassium hydroxide needed to completely saponify 1 g of fat. 7. Peroxide Value 过氧化值 the milliequivalents of iodine formed per kilogram of fat. 8.Acid Value 酸价 The milligrams of potassium hydroxide needed to neutralize the free fatty acids in 1g of a fat 9.Meat fat: 动物油 Butterfat 、 Lard 、 Tallow Vegetable fat 植物油 Canola Coconut Corn Cottonseed Olive Pa