A freshness-retaining agent for an agricultural or horticultural product comprises an organic acid and a hydrgencarbonate. The organic acid may preferably be an organic acid which in the presence of water given off from the agricultural or horticultural product, reacts with the hydrogencarbonate such that carbon dioxide gas is gradually generated, for example, cinnamic acid, benzoic acid or citric acid or a derivative thereof. The hydrgencarbonate may preferably be sodium hydrogencarbonate. The freshness of the agricultural or horticultural product can be retained by causing the freshness-retaining agent to exist in the same atmosphere as the agricultural or horticultural product such that the freshness-retaining agent is allowed to gradually generate carbon dioxide gas in the presence of water given off from the agricultural or horticultural product.
农产品或园艺产品的保鲜剂由有机酸和
碳酸氢盐组成。有机酸最好是一种有机酸,这种酸在农产品或园艺产品释放出的
水的作用下与
碳酸氢盐反应,逐渐产生
二氧化碳气体,例如
肉桂酸、
苯甲酸或
柠檬酸或其衍
生物。
碳酸氢盐最好是
碳酸氢钠。通过使保鲜剂与农产品或园艺产品存在于相同的环境中,使保鲜剂在农产品或园艺产品释放出的
水的作用下逐渐产生
二氧化碳气体,可以保持农产品或园艺产品的新鲜度。