亚洲成人涩涩 I 在线播放你懂的 I 污网站在线观看视频 I 日本国产中文字幕 I 久久久久久国产 I 六月婷综合 I av 一区 二区 久久 I 日本丰满熟妇hd I 一级黄片毛片 I 国产一级久久 I 欧美性精品220 I 日本肉感肥臀一二三区 I www国产在线 I 欧美日韩中文另类 I 国产一区二区不卡在线看 I 亚洲国产成人不卡 I 亚洲日本精品一区 I 篠田优中文在线播放第一区 I 国产二区视频在线播放 I 性猛aa久久久 I 成在人av抽搐高潮喷水流白浆 I 日韩aa大片 I 噜噜噜噜噜久久久久久91黄画 I 黄页网站在线看 I 欧美精品久久99久久在免费线 I 18岁禁看奶视频免费看 I 亚洲中文欧美在线视频 I 国产做爰xxxⅹ久久久 I 欧美一区二区视频在线观看 I wwwxxx黄色 I 国产精品12区

英國Oxoid*胰蛋白胨
蛋白胨是酪蛋白的胰消化。它可用于在任何制定胰腺或胰蛋白酶消化酪蛋白中。酪蛋白是牛奶的主要蛋白質是氨基酸態氮的豐富來源
 

英國Oxoid*胰蛋白胨

Code: LP0042

Tryptone is a pancreatic digest of casein. It can be used in any formulation where a pancreatic or tryptic digest of casein is specified. Casein is the main protein of milk and is a rich source of amino acid nitrogen. The profile shows a broad spread of peaks throughout the molecular weight range characteristic of a pancreatic digest. This hydrolysate is often mentioned in published works, either as a constituent of culture media for metabolic or growth studies, or for other purposes where high performance and uniformity of composition are of paramount importance. It has a high tryptophan content and is therefore used in media for testing the indole reaction.
Tryptone can detect `flat-sour’ or `sulphide’ spoilage organisms in the canning industry and is also used in sterility testing media.
It is a constituent of media used in fermentation processes to produce antibiotics, extra-cellular protein, interferon and diphtheria toxoid.