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Journal of Integrative Agriculture  2020, Vol. 19 Issue (9): 2352-2361    DOI: 10.1016/S2095-3119(20)63236-1
Special Issue: 食品科学合辑Food Science
Food Science Advanced Online Publication | Current Issue | Archive | Adv Search |
Evaluation of sugar and organic acid composition and their levels in highbush blueberries from two regions of China
ZHANG Jia1*, NIE Ji-yun2, 1*, LI Jing1, ZHANG Hui1, LI Ye1, Saqib FAROOQ1, Syed Asim Shah BACHA1, WANG Jie3 
1 Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs/Institute of Pomology, Chinese Academy of Agricultural Sciences, Xingcheng 125100, P.R.China
2 College of Horticulture, Qingdao Agricultural University, Qingdao 266109, P.R.China
3 Institude of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
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Sweet and sour are the most important taste of blueberries, and they are produced by sugar and acid, respectively.  Their contributions to the taste depend not only on the levels of sugar and acid, but also on the types and relative proportions of sugar and acid.  Therefore, it is very important to evaluate the composition and levels of sugar and acid in blueberries.  Regional differences and variety diversity also affect the sugar and acid characteristics of fruits.  Therefore, this study selected two main producing regions in northern China (Weihai and Yingkou) to examine the sugar and acid characteristics of 11 common blueberry cultivars.  The indexes measured included soluble sugars, organic acids, soluble solid content and titratable acidity.  The results showed that glucose and fructose were the major sugars, and citric acid and quinic acid were the major organic acids.  Correlation analysis showed that glucose, fructose, and sucrose were positively correlated with total sugar content; the citric acid content was positively correlated with the titratable acidity and total organic acids.  Titratable acidity, glucose, fructose, sucrose, total sugar content, citric acid, shikimic acid and total acid content of the blueberries varied significantly between regions (P<0.05).  In general, compared with Weihai blueberries, Yingkou blueberries had higher sugar content and lower acid content.  The results of this study may provide useful references for the evaluation of sweet and sour flavors and cultivar selection of blueberries.
Keywords:  blueberry        sugar        organic acid        level        evaluation  
Received: 11 September 2019   Accepted:
Fund: This research was supported by the Agricultural Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences (CAAS-ASTIP-2018-RIP-07).
Corresponding Authors:  Correspondence NIE Ji-yun, E-mail:    
About author:  ZHANG Jia, E-mail:; * These authors contributed equally to this study.

Cite this article: 

ZHANG Jia, NIE Ji-yun, LI Jing, ZHANG Hui, LI Ye, Saqib FAROOQ, Syed Asim Shah BACHA, WANG Jie. 2020. Evaluation of sugar and organic acid composition and their levels in highbush blueberries from two regions of China. Journal of Integrative Agriculture, 19(9): 2352-2361.

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