N-A-A Chapter 219
Chapter 219
Ning Shu nodded: "People are not afraid, the stomach is capricious, and there are three wasted ones!"
Jiang Yao thought for a while: "That's why you need pasteurization before drinking milk." He
looked at Jiang Yao's chest shallowly: "Not all milk needs to be sterilized."
"That's right!"
Lu Zhe nodded: "In addition, pasteurization is indiscriminate sterilization, not only killing harmful bacteria, but also killing beneficial bacteria. Fresh milk will not ferment under sterile conditions and will only spoil directly, so it is necessary to be vaccinated with lactic acid bacteria.
Shen Bing nodded and said: "If only we had yogurt, even if it was only a little, at the current temperature, we could make the bacteria multiply in large quantities." But not at all, I can only think of other ways.
Ning Shu held his chin and thought, "So you can only use things in your mouth or intestines?"
Jiang Yao was helpless: "Feel and uncomfortable."
Shen Bing said: "If you want to open up, the world's first lactic acid bacteria spores were isolated from animal poop.
Jiang Yao was shocked: "That is to say, all the lactic acid bacteria food we eat is..." Ning
Shuhe shallow screamed.
Shen Bing shook his head: "Most of the lactic acid bacteria I eat now are industrial extraction, and the extraction source is cleaner, for example, spicy cabbage is rich in lactic acid bacteria." But I also know that a girl at a technical university successfully extracted lactic acid bacteria from stockings and made yogurt.
A light red face said, "That... Do you still want my socks?
Lu Zhe shook his head: "With our current conditions, there is no way to isolate lactic acid bacteria, and different vectors may bring other different strains, such as Escherichia coli, staphylococcus and bifidobacteria, etc., both good and bad."
Different people's body flora composition is also different, some people extract is suitable for making yogurt, some people may not be suitable!
"So what to do?"
"In batches!" Lu Zhe took out some cans: "Fortunately, there is a lot of milk, now Haiyan can produce more than ten pounds of milk a day, by the way, in addition to drinking a lot of left, what are you all for?"
Jiang Yao blushed: "Wash your face, wash your feet..." Lu
Zhe nodded: "I said everyone, let's survive on a desert island, you actually wash your feet with milk?"
"Can't drink, can't help it."
Lu Zhe thought about it, before he could find a way to preserve milk, there was really no better way to deal with excess milk than to throw it out.
Washing your face and feet, taking care of your skin is really more valuable than throwing it away.
"Then why don't you wash me?"
"You also wash a boy with milk?"
"No, the topic has been taken off the way by you again." Lu Zhe used a paratrooper knife to split a can in two from the middle, and the bottom became a small aluminum cup.
"Because there is still a lot of milk, we can get more than two dozen such small aluminum cups, sterilize the milk, pour it into the small aluminum cup, and then inoculate different bacterial sources to see which cup of milk fermented yogurt is the best, and then use this cup to cultivate lactic acid bacteria, we can ferment yogurt." Milk tofu can also be made later.
Ning Shu frowned: "I understand everything else, what does it mean to inoculate different bacterial sources?"
Lu Zhe explained: "First give these canned cups a number, No. 1 with the squad leader's saliva, No. 2 with the squad leader's intestinal extract, No. 3 with Yaoyao's saliva, No. 4 with Yaoyao's intestinal extract, and so on
.... Because each person's physique is different, the microbiota of each part of the body is also different, which is one of the reasons for the difference in human taste. Therefore, the quality of the yogurt made is also different.
When inoculating the source of bacteria, it is not limited to the above two, such as underarms, toes and other places that love to sweat, there may be lactic acid flora, which can be used for vaccination. "