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

Why do orange citrus fruits (like oranges) spoil faster than yellow citrus fruit

放大字體  縮小字體 發布日期:2007-08-06
核心提示:The colour of the peel of citrus fruits is due to carotenoids. In view of the fact that carotenoids do not have any anti-microbial activity, there is no correlation between colour and spoilage by micro organisms. Spoilage is influenced by a combinat

The colour of the peel of citrus fruits is due to carotenoids. In view of the fact that carotenoids do not have any anti-microbial activity, there is no correlation between colour and spoilage by micro organisms.

Spoilage is influenced by a combination of intrinsic and extrinsic factors, such as acid, temperature, nutrients and anti-microbial compounds.

Acid is a major factor in spoilage; acid fruits are generally spoiled by fungi only, as most spoilage bacteria do not grow at a low pH.

Temperature is also a major factor; the higher the temperature, the faster spoilage will occur. As citrus fruits are normally stored under similar conditions, this factor does not play a role in this case.

All citrus fruits are generally rich in nutrients, especially sugar; hence the sugar concentration does not influence a difference in spoilage rate.

The peels of citrus fruits are rich in essential oils. These oils generally contain compounds with anti-microbial activity. The presence and concentration of these compounds thus may play a role in the observed differences in spoilage. There is no relation, however, with the colour of the fruit.

Most citrus fruits are treated with anti-microbial compounds on the peel; the fruits are sprayed, washed, impregnated or wrapped in impregnated paper to prevent spoilage during transport. Differences in this treatment are probably the most important factors that determine the rate of spoilage of citrus fruits, together with the overall storage conditions.

更多翻譯詳細信息請點擊:http://www.trans1.cn
 
[ 網刊訂閱 ]  [ 專業英語搜索 ]  [ ]  [ 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 5.703 second(s), 1165 queries, Memory 4.2 M
主站蜘蛛池模板: 久青草久青草高清在线播放 | 国产福利小视频在线观看 | 亚洲高清色图 | 色综合网址| 五月婷婷网址 | 亚洲二区在线观看 | 毛片福利| 午夜老司机永久免费看片 | 黄色网免费 | 岛国大片在线 | 国产精品午夜寂寞视频 | 国产午夜在线观看视频播放 | 日本xx69| 欧美爽爽 | 老师喂我吃她的奶水脱她胸罩 | 欧美性白人极品1819hd高清 | 中文字幕日韩三级 | 久久艹影院 | 久久一卡二卡 | 一区二区三区视频在线观看 | 色人人| 日本黄页网站 | 狠狠干激情| 桃花岛亚洲精品tv自拍网站 | 免费看一级大片 | 天天操91 | xvideos国产| 女生扒开尿口让男生舔 | 国产嫩草影院在线观看 | 天天摸天天 | 99精品热视频 | 亚洲天天干 | 日韩一区二区三区免费 | 伊人网在线免费视频 | 在线www天堂资源网 在线播放 你懂的 | 亚洲成人激情片 | 天天澡天天干 | 欧美69xx| 免费爱爱视频网站 | 欧美三级视频网站 | 色色视频免费网 |