食品专业英语课件（带翻译）.pptVIP

Part 2 食品科技英语的阅读 Part 2 食品科技英语的阅读 Part 2 食品科技英语的阅读 Part 2 食品科技英语的阅读 Part 2 食品科技英语的阅读 Hydrolysate n.水解产物 Racemic adj. 外消旋的 Isomer n. 异构体 Acylase n.酰基转移酶 Deregulate n.解除管制 Auxotrophic adj. 营养缺陷型的，营养缺陷体的 Intermediate adj. 中间的 n.媒介，中间物 Eliminate v.排除，消除 Analogue n.相似物，类似情况，对等的人 Revertant n. adj. 回复子(的)，回复突变型(的) Part 2 食品科技英语的阅读 Amino acids are produced using a range of technologies including direct fermentation, biotransformation of precursors using cells or enzymes, extraction of protein hydrolysates and chemical synthesis. They have a variety of uses as nutrients and flavours in the food and feed industries. Part 2 食品科技英语的阅读 a range of 一系列的，很多的 1. a range of fruit-flavoured toppings （蛋糕上的各种果味配料） 2. Control of a range of food related microorganisms by a multi-parameter preservation system （利用多参数保藏系统控制一系列食品相关微生物） a variety of 多种的，各种各样的 1. a variety of food is sold at a supermarket （超级市场各式各样的食物均有出售） 2. a new variety of apples（苹果的新品种） A series of 一系列，许多 Part 2 食品科技英语的阅读 Table 1 indicates the annual demand, production methods and applications of amino acids in the food industry. Important amino acids with non-food applications include L-arginine, L-gludtamine, L-histidine, L-leucine, L-phenylalanine, L-tyrosine and L-valine. Part 2 食品科技英语的阅读 While fermentation or biotransformation processes have been developed for production of all amino acids except glycine, L-cysteine and L-cystine, not all of these processes are commercially viable. L-asparagine, L-leucine, L-tyrosine, L-cysteine, and L-cystine are produced by purification of protein hydrolysates. Part 2 食品科技英语的阅读 Chemical synthesis is more economical for production of optically-inactive racemic mixtures of D- and L-isomers, and D, L-alanine,D,L-methionine, D, L-tryptophan and glycine are produced in this way. Processing involving amino acylase enzymes may be used to resolve these racemic mixtures. Part 2 食品科技英语的阅读 Microb