在线观看亚洲精品专区-在线观看亚洲免费-在线观看亚洲免费视频-在线观看亚洲欧美-欧美freexxx-欧美free嫩交video

食品伙伴網服務號
 
 
當前位置: 首頁 » 專業英語 » 專業知識 » 正文

What is pectin?

放大字體  縮小字體 發布日期:2007-06-20
核心提示:Pectin is the major binding component of the cell walls of plants and fruits. It is chemically a polysaccharide, consisting of a linear chain of linked molecules of galacturonic acid; regions on the backbone with a lot of side chains are the so-call

Pectin is the major binding component of the cell walls of plants and fruits. It is chemically a polysaccharide, consisting of a linear chain of linked molecules of galacturonic acid; regions on the backbone with a lot of side chains are the so-called “hairy regions”, and regions with little side chains are referred to as “smooth regions”.

The structure of pectin

Pectin has the property to form a gel with sugar. For this reason, pectin is used in combination with sugar as a thickening agent in the food industry. A well-known usage of pectin is in jam making. Most fruits contain pectin, but not in sufficient amounts to form a thick gel when making jam; pectin is therefore added to improve the quality of jam. Pectin is added to a special sugar that can be used especially for making jam (jellifying sugar). Pectin and sugar form a network when heated, but not at room temperature. This is the reason why jam thickens while cooking.

The group of fruits containing enough pectin to form a gel is very small; an example is the quince. Commercially pectin is made from apple- and orange pulp and peel.

更多翻譯詳細信息請點擊:http://www.trans1.cn
 
關鍵詞: pectin
[ 網刊訂閱 ]  [ 專業英語搜索 ]  [ 加入收藏 ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業英語
點擊排行
 
 
Processed in 1.040 second(s), 17 queries, Memory 0.9 M
51La
主站蜘蛛池模板: 天天躁日日躁成人字幕aⅴ 天天躁夜夜躁 | 天堂bt资源在线官网 | 丁香五月情| 亚洲综合色视频 | 精品午夜久久影视 | 丰满年轻岳欲乱中文字幕 | 久久精品国产大片免费观看 | 国产在线视频不卡 | 四虎在线永久 | 日日操夜夜操狠狠操 | 女人成午夜大片7777在线 | 丁香花五月婷婷开心 | 久久视频精品线视频在线网站 | 亚洲女同一区二区 | a级网站| 一级黄视频 | 在线视频这里只有精品 | 高h道具触手play肉男男 | 国产亚洲精品自在久久77 | 国产紧缚jvid | 国产免费美女 | 亚洲综合一二三区 | 五月婷久久 | 免费看片你懂的 | 欧美色久| 国产女人和拘做受视频免费 | 欧亚色视频| 手机看片1024在线观看 | 成年人看的黄色 | 狠狠操狠狠插 | 四虎影视免费看 | 97久久伊人精品影院 | 婷婷亚洲综合 | 性欧美高清强烈性视频 | 国产欧美精品午夜在线播放 | 五月婷婷在线视频观看 | 欧美成人69| 人人骚| 五月天激激婷婷大综合丁香 | 日本不卡免费一区 | 天天做天天爱天天爽综合区 |
微信二维码