真空除氧(yang)(yang)除了(le)抑(yi)制微生物的生長和繁殖(zhi)外(wai),另一(yi)個重要功能(neng)是防(fang)止食(shi)(shi)(shi)品(pin)(pin)氧(yang)(yang)化,因油脂(zhi)類食(shi)(shi)(shi)品(pin)(pin)中(zhong)(zhong)含有大(da)量不飽和脂(zhi)肪酸,受(shou)氧(yang)(yang)的作(zuo)用(yong)而氧(yang)(yang)化,使(shi)食(shi)(shi)(shi)品(pin)(pin)變(bian)味(wei)、變(bian)質(zhi)(zhi),此外(wai),氧(yang)(yang)化還使(shi)維生素A和C損失,食(shi)(shi)(shi)品(pin)(pin)色(se)素中(zhong)(zhong)的 不穩定物質(zhi)(zhi)受(shou)氧(yang)(yang)的作(zuo)用(yong),使(shi)顏色(se)變(bian)暗(an)。所以,除氧(yang)(yang)能(neng)有效(xiao)地防(fang)止食(shi)(shi)(shi)品(pin)(pin)變(bian)質(zhi)(zhi),保(bao)持其色(se)、香、味(wei)及(ji)營養價值。
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