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郴州鋁箔立體袋生產廠家

郴州鋁箔立體袋生產廠家

  • 所屬分類:郴州(zhou)鋁箔立體袋(dai)
  • 瀏覽次數:
  • 發布日期:2020-01-16
  • 產品概述

真空(kong)袋的(de)(de)(de)主要(yao)作(zuo)用(yong)是除(chu)氧(yang)(yang)(yang)(yang),以(yi)有利于防止(zhi)食(shi)(shi)(shi)品(pin)(pin)變(bian)(bian)質(zhi),其(qi)(qi)原(yuan)理也比較簡(jian)單,因食(shi)(shi)(shi)品(pin)(pin)霉腐變(bian)(bian)質(zhi)主要(yao)由微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)的(de)(de)(de)活動造成,而大多(duo)數微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(如霉菌(jun)(jun)(jun)(jun)和(he)(he)(he)酵母菌(jun)(jun)(jun)(jun))的(de)(de)(de)生(sheng)(sheng)存是需要(yao)氧(yang)(yang)(yang)(yang)氣的(de)(de)(de),而真空(kong)包(bao)裝就(jiu)是運用(yong)這個原(yuan)理,把(ba)包(bao)裝袋內(nei)(nei)和(he)(he)(he)食(shi)(shi)(shi)品(pin)(pin)細胞內(nei)(nei)的(de)(de)(de)氧(yang)(yang)(yang)(yang)氣抽掉,使微(wei)(wei)物(wu)(wu)(wu)(wu)物(wu)(wu)(wu)(wu)失去“生(sheng)(sheng)存的(de)(de)(de)環境(jing)”。實驗證明:當包(bao)裝袋內(nei)(nei)的(de)(de)(de)氧(yang)(yang)(yang)(yang)氣濃度≤1%時,微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)的(de)(de)(de)生(sheng)(sheng)長(chang)和(he)(he)(he)繁殖速度就(jiu)急劇下降,氧(yang)(yang)(yang)(yang)氣濃度≤0.5%時,大多(duo)數微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)將受(shou)到抑(yi)制而停(ting)止(zhi)繁殖。(注:真空(kong)包(bao)裝不能(neng)抑(yi)制厭氧(yang)(yang)(yang)(yang)菌(jun)(jun)(jun)(jun)的(de)(de)(de)繁殖和(he)(he)(he)酶反(fan)應(ying)引(yin)起的(de)(de)(de)食(shi)(shi)(shi)品(pin)(pin)變(bian)(bian)質(zhi)和(he)(he)(he)變(bian)(bian)色,因此還(huan)需與(yu)其(qi)(qi)它輔助方(fang)法結合(he),如冷藏、速凍、脫水(shui)、高溫殺菌(jun)(jun)(jun)(jun)、輻照 滅菌(jun)(jun)(jun)(jun)、微(wei)(wei)波殺菌(jun)(jun)(jun)(jun)、鹽腌(a)制等。)真空(kong)除(chu)氧(yang)(yang)(yang)(yang)除(chu)了抑(yi)制微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)的(de)(de)(de)生(sheng)(sheng)長(chang)和(he)(he)(he)繁殖外,另一個重要(yao)功能(neng)是防止(zhi)食(shi)(shi)(shi)品(pin)(pin)氧(yang)(yang)(yang)(yang)化(hua)(hua),因油(you)脂(zhi)類食(shi)(shi)(shi)品(pin)(pin)中(zhong)含有大量不飽和(he)(he)(he)脂(zhi)肪酸,受(shou)氧(yang)(yang)(yang)(yang)的(de)(de)(de)作(zuo)用(yong)而氧(yang)(yang)(yang)(yang)化(hua)(hua),使食(shi)(shi)(shi)品(pin)(pin)變(bian)(bian)味、變(bian)(bian)質(zhi),此外,氧(yang)(yang)(yang)(yang)化(hua)(hua)還(huan)使維生(sheng)(sheng)素(su)(su)A和(he)(he)(he)C損失,食(shi)(shi)(shi)品(pin)(pin)色素(su)(su)中(zhong)的(de)(de)(de)不穩定物(wu)(wu)(wu)(wu)質(zhi)受(shou)氧(yang)(yang)(yang)(yang)的(de)(de)(de)作(zuo)用(yong),使顏色變(bian)(bian)暗。所以(yi),除(chu)氧(yang)(yang)(yang)(yang)能(neng)有效地防止(zhi)食(shi)(shi)(shi)品(pin)(pin)變(bian)(bian)質(zhi),保持(chi)其(qi)(qi)色、香(xiang)、味及營(ying)養價值。

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