Effects of 5 bagging treatments on sugar and acid content and chlorpyrifos pesticide residues in early maturing pears

doi:10.3969/j.issn.1004-1524.2018.08.13

›› 2018, Vol. 30 ›› Issue (8): 1363-1368.DOI: 10.3969/j.issn.1004-1524.2018.08.13

• Horticultural Science • Previous Articles Next Articles

Effects of 5 bagging treatments on sugar and acid content and chlorpyrifos pesticide residues in early maturing pears

LI Gangbo, FAN Jide, ZHAO Lin, ZHANG Ting, ZHANG Mei, YANG Yan, YANG Feng^*

Xuzhou Institute of Agricultural Sciences in Xuhuai Area of Jiangsu, Xuzhou 221121, China

Received:2017-10-31 Online:2018-08-25 Published:2018-08-28

Abstract

Abstract: In order to investigate the effects of 5 bagging treatments on fruit quality, sugar and acid content, and chlorpyrifos pesticide residues in early maturing pears, the pear variety Sucui No. 1 was used as material. Liquid chromatography and gas chromatography were used to analyze the content of sugar and acid chlorpyrifos pesticide residues. The results showed that the smoothness and brightness of bagging fruits were significantly improved, and the treatments in yellow white bag (HB) and black wax composite bag (FL) had no significant effect on fruit size and fruit shape index. The content of sorbitol in fruits had no significant difference, while the content of sucrose, glucose and fructose decreased significantly. The total sugar content of HB was relatively high. Compared with the control, the total sugar content of HB treatment was decreased by 6.36%. The effects of 5 kinds of bags on malic acid, quinidine acid and total acid were greater, but not on citric acid content. Compared with the control, chlorpyrifos residues in fruits treated with HB and FL were decreased by 37.37% and 55.55%, respectively. Among them, the content of chlorpyrifos residue in FL decreased by 29.03%, compared with HB. The effect of reducing chlorpyrifos residue in three layer paper bags was better than that in double layer bag.

Key words: bagging, early-maturing pear, sugar and acid content, organic phosphorus

CLC Number:

S661.2

LI Gangbo, FAN Jide, ZHAO Lin, ZHANG Ting, ZHANG Mei, YANG Yan, YANG Feng. Effects of 5 bagging treatments on sugar and acid content and chlorpyrifos pesticide residues in early maturing pears[J]. , 2018, 30(8): 1363-1368.

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Effects of 5 bagging treatments on sugar and acid content and chlorpyrifos pesticide residues in early maturing pears

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