苹果切开放在保鲜袋里密封能放几天

2025-04-07 11:14:21
推荐回答(2个)
回答1:

苹果储存的关键因素是温度和湿度,以及环境气体成分.多数品种贮藏适温在0℃~-1℃;不同品种的贮藏适温不同,同一品种,不同产区对低温的敏感性也不同,如红玉苹果0℃贮温适宜,国光可在-2℃下贮藏,红元帅苹果贮温-1℃~-2℃.气调贮藏适温应比普通冷藏高0.5℃~1℃.苹果贮藏要求920%~95%的相对湿度.多数冷库需人工洒水、撒雪来加湿,以减少贮藏期的自然损耗(干耗),保持果实的鲜度.苹果适宜低氧、低二氧化碳气调贮藏,一般苹果气调贮藏适宜的气体条件氧是2%~3%,二氧化碳0%~5%,但不同品种具体要求的氧和二氧化碳气体指标有不同,黄元帅苹果要求氧是1%~5%,二氧化碳是1%~6%,国光苹果要求氧是2%~6%,二氧化碳是1%~4%,红富士苹果氧是2%~7%,二氧化碳是0%~2%.
常见苹果品种有60多种,按成熟度可分为早熟种、中熟种和晚熟种,中、晚熟品种比早熟品种耐贮藏;早熟品种如黄魁、祝光、丹顶等,这类苹果质地松、味多酸、果皮薄、蜡质少,由于在7、8月高温季节成熟,呼吸强度大,果实内积累不多的养分很快被消耗掉,所以不耐远运和贮藏.中熟品种如红玉、鸡冠、黄元帅、红星、红冠、倭锦等,多在9月份成熟,这类苹果多甜中带酸,肉质较早熟种硬实些,因而较早熟种耐贮运.其中红玉、黄元帅易失水皱皮,红星、红冠、倭锦果肉易发绵,鸡冠果皮、果肉、果心易褐变,这类苹果冷藏会延长贮期,气调贮藏效果会更明显.晚熟品种如国光、青香蕉、印度、红富士等在10月份成熟,这类苹果内质紧实、脆甜稍酸,由于晚熟积累养分较多,最耐长期贮运,冷藏或气调贮藏可达7~8个月.

回答2:

保鲜袋不保真空,时间长了就氧化了。水分增发了

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