Establishment of an evaluation system for longan fruit storage quality based on the physicochemical indices

HAN Dongmei; YANG Wu; WU Zhenxian; LI Jianguang; SHUAI Liang; NIU Jiajia; PAN Xuewen; GUO Dongliang

doi:10.7671/j.issn.1001-411X.2015.06.007

Journal of South China Agricultural University > 2015 > 36(6): 39-46. > DOI: 10.7671/j.issn.1001-411X.2015.06.007

HAN Dongmei, YANG Wu, WU Zhenxian, LI Jianguang, SHUAI Liang, NIU Jiajia, PAN Xuewen, GUO Dongliang. Establishment of an evaluation system for longan fruit storage quality based on the physicochemical indices[J]. Journal of South China Agricultural University, 2015, 36(6): 39-46. DOI: 10.7671/j.issn.1001-411X.2015.06.007

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Establishment of an evaluation system for longan fruit storage quality based on the physicochemical indices

1.
Institute of Fruit Tree Research, Guangdong Academy of Agriculture Science /Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture, Guangzhou 510640, China
2.
College of Horticulture, South China Agricultural University /Guangdong Key Lab of Postharvest Science of Fruit and Vegetable, Guangzhou 510642, China

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Received Date: July 20, 2014
Available Online: May 17, 2023

Graphical Abstract

Abstract

Abstract

Objective
This research was conducted to establish an easy and effective evaluation system for longan storage quality based on physicochemical indices.
Method
Multivariate statistical analyses, including factor analysis, regression analysis and hierarchical clustering, were used to evaluate and grade the fruit storabilities of 30 longan varieties, and the mathematical models were established.
Result and conclusion
The results showed that the comprehensive scores for storability of 30 varieties were obtained, including normal-temperature pericarp browning and mass loss rate, low-temperature pericarp browning and aril autolysis, which were all significantly related with their corresponding indices of storage performance in different periods. The mathematics models of storage performance of longan fruits at different temperatures were established, from which the effective predictive indices were screened and a physicochemical index database was built. It is concluded that there are 3 physicochemical indices including maturity, a^* value of exocarp and total soluble solids (TSS) content for normal temperature storability, and 3 indices, i.e. skin crevasse crack, total sugar content in the aril and flavor for low temperature storability. The 30 varieties are classified into 4 types based on their storabilities at normal and low temperatures.
- longan fruit,
- storage quality,
- physicochemical index,
- multivariate statistic analysis,
- predictive model

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References

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