日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
Business
Home / Business / Industries

UHT milk: what it is and why it's good for you

chinadaily.com.cn | Updated: 2020-12-25 08:55
Share
Share - WeChat
Milk's values are not limited to its nutrients. [Photo/CFP]

Richard Evershed, a biogeochemist at the University of Bristol, has used a new technology to conduct radiocarbon dating of animal fat residues found on pottery.

Evershed's research team separated compounds of up to two grams from pottery samples and detected very small traces of fatty acid carbon in milk, cheese and meat residues. The new technology could help reveal the dietary changes of prehistoric creatures.

Evershed's discovery has been listed among the "Top 10 Discoveries of 2020" by Archaeology, an influential journal published by the Archaeological Institute of America.

Diet has always been a subject of great interests in archaeology, as it offers important clues for the study of human development. Research has found that frescoes in a temple in Babylon dating back about 6,000 years are the earliest historical records of humans cultivating and drinking milk. Milk's values are not limited to its nutrients. A closer study of it over the centuries could reveal the change and development of human society and even patterns of global civilizations.

Milk and dairy products were not popular in Europe until the 19th century. As milk was not easy to preserve and was apt to sour it became a breeding ground for bacteria without refrigeration. For that reason milk was once banished as a food for the poor and the rich kept it at a distance.

New technologies changed that. Pasteurization, developed in the mid-19th century, gradually helped milk become a popular consumer good. With the emergence of trains and the advent of refrigerators in the 20th century, milk could be transported and became easier to preserve and gradually more popular worldwide.

Then came a major breakthrough. UHT (ultra high temperature) technology revolutionized milk consumption. In the 1960s, aseptic packaging and UHT treatment pushed the boundaries of sterilized milk processing, significantly expanding the transportation range of milk products while greatly improving their shelf life and safety. In Western European countries, the market share of UHT milk increased from merely 16 percent in 1974 to 54 percent in 2000.

Market acceptance, just like Rome, wasn't built in one day and there have always been doubters and rumors along the way. China, in early days a stranger to UHT, was no exception.

There are still doubters wondering if preservatives were added, given that the storage time of UHT milk can be as long as five to eight months. Those privy to what UHT technology is will realize how unfounded that idea is.

UHT (ultra high temperature) sterilization milk, as the name indicates, involves treating milk at a high temperature (usually at least 135 C or 275 F) for one or two seconds .

UHT technology can basically eliminate bacteria. In a hermetically sealed environment, milk processed in this way can be kept for several months or even longer without refrigeration. Therefore, its safety level is higher as it poses a lower risk of bacteria and microbial toxins.

There are also concerns about UHT milk's nutritional value. Some fear that high temperature will hurt its original nutritional components.

1 2 Next   >>|
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
CLOSE
 
主站蜘蛛池模板: 久久久久成人精品亚洲国产 | 成人精品视频在线观看 | 亚洲一区二区中文字幕 | 国产成人理在线观看视频 | 久久精品免费一区二区三区 | 国产精品美女久久久免费 | 精品一卡2卡三卡4卡免费观看 | 久99久视频 | 丁香六月婷婷在线 | 国内精品免费 | 午夜色a大片在线观看免费 龙珠z在线观看 | 欧美 亚洲 一区 | 国产主播在线看 | 日本不卡不码高清免费 | 亚洲激情视频在线观看 | 台湾三级无遮挡在线播放 | 欧美浮力影院 | 久久久一区二区 | 免费人成在线播放 | 亚洲一级毛片中文字幕 | 新91| 91国内精品久久久久怡红院 | 天天操婷婷| 一区二区三区不卡免费视频97 | 奇米影视四色7777 | 精品久久久久久国产 | 青草福利在线 | 亚洲欧洲视频在线观看 | 四虎影 | 国产精品久久久久影院色老大 | 欧美三级成人理伦 | 爱爱无遮挡 | 91在线观看视频 | 免费精品视频在线 | 成人免费看黄网站无遮挡 | 999热精品 | 日本免费在线一区 | 鲁一鲁影院 | 久久精品亚洲成在人线av网址 | 亚洲精品一区久久久久久 | 小明成人免费视频 |