如果利用葡萄糖的厌氧产酸细菌含量较高、氨化细菌和产甲烷细菌含量低，则发酵难以启动、产气率不高。
When the number of acid-producing anaerobes utilizing glucose was large, the number of anaerobic ammonibacteria and methanobacteria were small, it was very difficult to start fermentation…
每当你吃饭的时候，细菌就开始产酸。
Every time you eat, the bacteria in your mouth produce acid.
在这些食品中的糖通常结合细菌在口腔内产酸。
The sugars in these foods combine with the bacteria normally in the mouth to form acids.
细菌暴露于糖或者碳水化合物之下可以产酸。
Bacteria that are exposed to sugars or carbohydrates can make acid.
你需要食物，特别是甜食和粘性食物，你口腔中的细菌就会利用它产酸并损害牙釉质（牙齿表面光亮的那一层）。
You need food, particularly sweet and sticky food, for the bacteria in your mouth to produce acids that will attack the tooth enamel (outer surface of the tooth).
而细菌利用它产酸。
虽然这些产氨菌不能有效地降解蛋白质，但它们可以利用其他瘤胃细菌的蛋白酶或肽酶水解的产物小肽与氨基酸。
Although these ammonia producers have limited ability to degrade proteins, they can utilize peptides or amino acids released by the proteases and peptidases of other ruminal bacteria.
以德氏乳酸杆菌为研究对象，考察了八种有机溶剂分别加入培养基对细菌生长及产酸的影响。
Biocompatibility of eight organic solvents for Lactobacillus delbruckii was investigated and the mixture of oleyl alcohol and trioctylamine was selected as the solvent of extractive cultivation.
以德氏乳酸杆菌为研究对象，考察了八种有机溶剂分别加入培养基对细菌生长及产酸的影响。
Biocompatibility of eight organic solvents for Lactobacillus delbruckii was investigated and the mixture of oleyl alcohol and trioctylamine was selected as the solvent of extractive cultivation.
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