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Title:: Effect of Nonwoven Polypropylene Fruit Bag on Microenvironment and Fruit Quality of ‘Zhandong No.2’ Winter Jujube

Author(s):: WANG Wenwen; SHEN Junling; FAN Lianmei; WANG Yongzhang; YUAN Yongbing; (College of Horticulture，Qingdao Agricultural University/Qingdao Key Lab of Agriculture Quality & Safety Engineering，Qingdao,Shandong 266019)

Keywords:: winter jujube; nonwoven polypropylene fruit bag; microenvironment; fruit quality

Abstract:: ‘Zhandong No.2’ winter jujube was used as material.The temperature inside and outside of the bag and air relative humidity were measured under the condition of nonwoven polypropylene(PP) fruit bag for the fruit of winter jujube.The appearance quality and relative indexes of winter jujube fruit in white,crisp and full matures were analyzed.The effects of PP bag on the microenvironment and winter jujube fruit quality were studied,in order to supply references for winter jujube production by using PP bag.The results showed that bagging caused the temperature inside the bag to rise and the humidity to drop;the highest temperature bag was higher 1-2 ℃ than that of the bag outside.After bagging,the surface of winter jujube was smooth and had little mechanical damage,and its brightness was improved by 3.06%,16.46% and 9.88%,respectively,in white,crisp and full matures.The soluble sugar content of fruit decreased by 0.21%,1.99% and 0.94%,respectively.The content of titratable acid increased by 42.85%,13.79% and 9.20%,respectively.Vitamin C content decreased by 0.30,0.17,0.09 mg·g-1,respectively.But the differences were not significant.PP bag could significantly change the micro-domain environment of winter jujube fruit,improve the appearance quality of jujube fruit,and had no obvious effect on its internal quality.