葡萄是人们喜欢的水果,但由于采收期集中和不耐贮运,造成生产季节产地大量积压霉烂,销地供应不足,旺季价格低廉,淡季价格昂贵。因此,葡萄保鲜储藏技术是生产实际的需要。甲壳质,是由虾蟹壳中提取出来的一种氨基多糖。研究表明,它对多种水果如弥猴桃、柑桔等都有很好的保鲜作用。用甲壳质、甲壳质铜络合物为主要原料制成浸膜保鲜剂,对葡萄进行保鲜实验,效果明显。 —、材料及方法 1.供试样品。选择肥水、管理条件良好,无病虫害。粒度均匀,穗形中等的龙眼葡萄60穗,于架上选定后随机分成三组,标记备用。 2.浸膜保鲜剂配制。取5份聚乙烯醇,2份柠檬酸,3份甲壳质及少量其它助剂,加100份水加热搅 Grapes are the fruit that people like. However, due to the concentrated harvest and the intolerance of storage and transportation, a great deal of backlog of produce is produced during the production season. As a result, the supply of land is insufficient, the peak season is low in price and the off-season is expensive. Therefore, grape preservation storage technology is the actual production needs. Chitin, is an amino polysaccharide extracted from shrimp crab shell. Studies have shown that it has a good preservation of a variety of fruits such as kiwi fruit, citrus and so on. With chitin, chitin copper complex as the main raw material made of film preservative, fresh grapes on the experiment, the effect is obvious. -, Materials and methods 1. The test sample. Choose fertilizer, management conditions are good, no pests. Particle size uniform, spike-shaped longan grapes 60 spike, selected on the shelf after randomly divided into three groups, marked spare. 2. Dip filming agent preparation. Take 5 parts of polyvinyl alcohol, 2 parts of citric acid, 3 parts of chitin and a small amount of other additives, add 100 parts of water heating stir