Detection of Alternaria alternata infection in winter jujubes based on optical properties and their correlation with internal quality parameters during storage

Mengwei Jiang; Sicong You; Hao Sha; Bingyao Bai; Li Zhang; Kang Tu; Jing Peng; Lijun Song; Weijie Lan; Leiqing Pan

doi:10.1016/j.foodchem.2022.135298

Detection of Alternaria alternata infection in winter jujubes based on optical properties and their correlation with internal quality parameters during storage

Food Chem. 2023 May 30:409:135298. doi: 10.1016/j.foodchem.2022.135298. Epub 2022 Dec 23.

Authors

Mengwei Jiang¹, Sicong You², Hao Sha³, Bingyao Bai⁴, Li Zhang⁵, Kang Tu⁶, Jing Peng⁷, Lijun Song⁸, Weijie Lan⁹, Leiqing Pan¹⁰

Affiliations

¹ College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China. Electronic address: 2020108036@stu.njau.edu.cn.
² College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China. Electronic address: 2020208020@stu.njau.edu.cn.
³ College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China. Electronic address: 2020808107@stu.njau.edu.cn.
⁴ College of Food Science and Engineering, Tarim University, Alar 843300, China. Electronic address: 120180028@taru.edu.cn.
⁵ College of Food Science and Engineering, Tarim University, Alar 843300, China; College of Food and Biological Engineering, Bengbu University, Bengbu 233030, Anhui, China. Electronic address: zhangli818@bbu.edu.cn.
⁶ College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China. Electronic address: kangtu@njau.edu.cn.
⁷ College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China. Electronic address: jpeng@njau.edu.cn.
⁸ College of Food Science and Engineering, Tarim University, Alar 843300, China; College of Food and Biological Engineering, Bengbu University, Bengbu 233030, Anhui, China. Electronic address: songlijun@bbu.edu.cn.
⁹ College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China. Electronic address: Weijie.lan@njau.edu.cn.
¹⁰ College of Food Science and Technology, Nanjing Agricultural University, No. 1, Weigang Road, Nanjing, Jiangsu 210095, China; Sanya Institute of Nanjing Agricultural University, Sanya, Hainan 572024, China. Electronic address: pan_leiqing@njau.edu.cn.

PMID: 36584526
DOI: 10.1016/j.foodchem.2022.135298

Abstract

In this work, a single integrating sphere system was applied to characterize the optical absorption (μ_a) and reduced scattering (μ_s') properties (550 - 1050 nm) in winter jujube flesh infected by Alternaria alternata during storage at 4 and 20 °C, respectively. Meanwhile, physical (L*, a*, weight loss) and biochemical characteristics (soluble solids content, titratable acids, chlorophyll, total phenolic, and ascorbic acid) of winter jujubes were measured. Among them, chlorophyll, weight loss and ascorbic acid were highly correlated with μ_a at 680 nm, 690 nm, while chlorophyll and a* had the best correlations with μ_s' at 700 - 920 nm. These optimal optical properties were proved efficiently contributed to the disease detection of winter jujubes after 12 days at 4 °C and 3 days at 20 °C during storage, with satisfactory discrimination accuracies (acc > 93.75 %). Consequently, optical properties in Vis-NIR region were available to detect the postharvest disease in winter jujubes.

Keywords: Alternaria alternata; Fungal infection; Optical properties; Quality parameters; Winter jujube.

MeSH terms

Alternaria
Ascorbic Acid
Chlorophyll
Ziziphus* / chemistry

Substances

Ascorbic Acid
Chlorophyll

Supplementary concepts

Alternaria alternata