4.7.I Occurrence and microheterogeneity B-Lactoglobulin is a major protein in bovine milk, representing about 50% of total whey protein and 12% of the total protein of milk. It was among the first proteins to be crystallized, and since crystallizability was long considered to be a good criterion of homogeneity, B-Ig, which is a typical

Vitamins are organic chemicals required by the body in trace amounts but which cannot be synthesized by the body. The vitamins required for growth and maintenance of health differ between species; compounds regarded as vitamins for one species may be synthesized at adequate rates by other species. For example, only primates and the guinea-pig require ascorbic acid (vitamin C; section 6.4) from their diet; other species possess the enzyme gluconolactone oxidase which is necessary for the synthesis of vitamin C from D-glucose or D-galactose

一、填空题(每题4分) 1、影响镀锡板罐罐内壁腐蚀的因素主要有 和 等。 2、罐头内壁涂料按其作用不同,可分为 和

第一节 果蔬类原料的特性及其保鲜 第二节 肉类原料的 特性及其贮藏保鲜 第三节 水产原料的特性及其保鲜 第四节 乳、蛋原料的特性及其保鲜

国内外得到应用的生物传感器主要包括: 1测定水质的BOD分析仪、在市场上有以日本和德国为 代表产品供应。 采用丝网印刷和微电子技术的手掌型血糖分析器, 已形成规模化生产,年销售量约为十亿美元; 固定化酶传感分析仪:国外以美国的YSI公司和德国 BST公司为代表,都有系列分析仪产品,它们主要用 于环境监测和食品分析,国内到目前为主只有山东 省科学院生物研究所的系列化产品在市场得到应用 4SPR生物传感器,在日、美、德、瑞典等国得到了 开发和初步应用

一、填空题(每题4分) 1、真空封罐时,需补充加热的情况有: 2、电阻焊接缝圆罐生产工艺流程为罐身切板→ →成圆 →翻边

一、填空题(每题4分) 1、常见的罐头腐败变质现象有 和 2、电阻焊接缝圆罐生产工艺流程为罐身切板→ →成圆 →翻边

Like all other foods of plant or animal origin, milk contains several indigenous enzymes which are constituents of the milk as secreted. The principal constituents of milk (lactose, lipids and proteins) can be modified by exogenous enzymes, added to induce specific changes. Exogenous en- zymes may also be used to analyse for certain constituents in milk. In addition, milk and most dairy products

Cheese is a very varied group of dairy products, produced mainly in Europe, North and South America, Australia and New Zealand and to a lesser extent in North Africa and the Middle East, where it originated during the Agricultural Revolution, 6000-8000 years ago. Cheese production and con- 10A and 10B), is increasing in traditional

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