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甜玉米以食用鲜嫩果穗为主,其鲜果穗既可煮熟、炒食,也可生食,品质优、风味好,还可以加工成罐头。甜玉米成熟后要及时采收,采收后由于酶类对糖分的转化,尤其是蔗糖转化为淀粉,使甜昧迅速下降,应及时做好预冷、贮藏,以保持甜玉米的风味。1.预冷从田间采回的玉米,要使其果穗热量迅速散发,应通过真空冷却器或水-空气冷却系统进行有效的预冷。甜玉米在30℃条件下1天有60%的糖转化为淀粉,而在0℃温度下1天仅有6%的糖转化为淀粉。所以甜玉米采收后必须在1小时内进入预冷、贮藏状态,在0～3℃的条件下,水冷1小时可将品温由30℃降到5℃。
Sweet corn edible fresh ear mainly fresh scallops cooked, fried, but also raw food, good quality, good flavor, can also be processed into canned food. After harvesting, the sweet corn should be harvested in time. After the harvesting, due to the conversion of sugars to sugar, especially the conversion of sucrose into starch, the sweetness and ignorance will drop rapidly. Pre-cooling and storage should be done in time to keep the sweet corn flavor. 1. Pre-chilling corn harvested from the field for rapid heat dissipation from its ears should be effectively precooled through a vacuum cooler or water-air cooling system. Sweet corn is 60% sugar converted to starch at 30 ° C for one day, whereas only 6% sugar is converted to starch at 0 ° C for 1 day. Therefore, the sweet corn harvest must be within 1 hour after entering the pre-cooling, storage conditions, 0 ~ 3 ℃ conditions, the water temperature can be 1 hour from 30 ℃ to 5 ℃.