真空除(chu)氧(yang)(yang)除(chu)了抑(yi)制(zhi)微生物(wu)的生長和(he)繁(fan)殖外,另(ling)一(yi)個重要功能(neng)是(shi)防(fang)止食品氧(yang)(yang)化,因油脂(zhi)類(lei)食品中(zhong)(zhong)含有(you)大量不飽和(he)脂(zhi)肪酸,受(shou)氧(yang)(yang)的作(zuo)用(yong)而(er)氧(yang)(yang)化,使(shi)(shi)食品變(bian)(bian)味、變(bian)(bian)質,此外,氧(yang)(yang)化還使(shi)(shi)維生素(su)A和(he)C損(sun)失,食品色素(su)中(zhong)(zhong)的 不穩定物(wu)質受(shou)氧(yang)(yang)的作(zuo)用(yong),使(shi)(shi)顏色變(bian)(bian)暗。所(suo)以(yi),除(chu)氧(yang)(yang)能(neng)有(you)效地防(fang)止食品變(bian)(bian)質,保持其色、香、味及營(ying)養(yang)價值。
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