果蔬保鲜冷库的湿度调节办法
2016-11-28 11:59:31
果蔬存放于果蔬保鲜冷库中可以延长果蔬的储藏期限,不过如果保鲜冷库管理不当,也不能起到很好的保鲜储藏果蔬的作用,那保鲜冷库的投入使用就变得没有意义了。对于果蔬来说,果蔬中含有的大量水分是维持果实生命活动和新鲜品质的必要条件。采摘后的果蔬,不能再从母体上获得水分的供给,在长期储藏过程中,逐渐蒸发水分。大多数水果蔬菜其干耗(重量损失)超过5%时,就会出现枯萎等鲜度下降的明显象征。特别是水果,当于耗达5%以后就不可能恢复原状。所以在果蔬保鲜冷库中储藏果蔬除了要留意制冷系统的运行是否能持续保持果蔬保鲜冷库的低温环境,还要留意保鲜冷库中的湿度是否合适。
The fruits and vegetables stored in fresh fruits and vegetables in cold storage could prolong the storage period of fruits and vegetables, but if the improper management of refrigeration storage, can not play well the role of fruits and vegetables, the refrigeration is put into use becomes meaningless. For fruits and vegetables, a large amount of water contained in fruits and vegetables is a necessary condition for maintaining the life activities and fresh quality of fruits. After picking fruits and vegetables, can not be obtained from the mother of the supply of water, in the long-term storage process, the gradual evaporation of water. Most fruits and vegetables, dry loss (weight loss) of more than 5%, there will be a marked decline in the degree of Wilt and other fresh symbol. Especially fruit, when the consumption of up to 5%, it is impossible to restore the status quo. So in fruits and vegetables preservation of fruits and vegetables in addition to storage of fruits and vegetables in addition to pay attention to the operation of the refrigeration system is able to maintain the fruits and vegetables fresh cold storage of low temperature environment, but also pay attention to fresh cold storage in the humidity is suitable.
果蔬的水分蒸发,一方面是由于呼吸作用,散发出一部分水分;另一方面是储藏环境的空气湿度过低,引起果蔬枯萎,降低了商品价值。因此,高温库的湿度要很好地进行调节,果蔬保鲜冷库的湿度一般要求在85~90%,根据果蔬种类不同略有浮动。如果湿度过低,可在鼓风机前配合自动喷雾器,随冷风将细微小雾送入库房空气中,加湿空气。没有自动喷雾器,也可在地面上洒些清洁的水,或将湿的草席盖在包装容器上,来增加冷藏间的相对湿度。但如果湿度过高,果蔬的表面过于潮湿,有时还凝有水珠,给微生物滋生创造了条件,果蔬容易腐烂,这时可在库内放些干石灰、无水绿化钙或干燥的木炭吸潮。高温冷藏间的温度和相对湿度都应尽量保持稳定,不得有较大幅度波动,否则会刺激果蔬的呼吸作用,增加消耗,另外果蔬还会“出汗”,降低了它的储藏性。
The water evaporation of fruits and vegetables, on the one hand, is due to respiration, emitting a part of moisture; on the other hand, the storage environment of the air humidity is too low, causing fruit and vegetables wilt, reduce the value of goods. Therefore, the high temperature storage of the humidity to be very good to adjust the humidity of fruits and vegetables fresh cold storage in 85~90%, according to the different types of fruits and vegetables slightly floating. If the humidity is too low, can be in front of the blower with automatic sprayer, with the cold air will be fine small mist to send storage room in the room, humidification air. No automatic sprayer can also sprinkle clean water on the ground, or the wet straw cover on the container, to increase the relative humidity of storage room. But if the humidity is too high, and the surface is too wet, sometimes there is water to condensate, microbial breeding to create the conditions for fruits and vegetables are perishable, then in a library, put some dry lime green or dry anhydrous calcium absorbent charcoal. High temperature storage room temperature and relative humidity should be kept stable, no fluctuations, otherwise it will stimulate the respiration of fruits and vegetables, increase the consumption of fruits and vegetables, also will be sweating, it reduces the storage.
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