Comprehensive physicochemical indicators analysis and quality evaluation model construction for the post-harvest
Qiuhui Xu1, Jie Wang1, Dan Wang1
1Key Laboratory of Oilseeds Processing of Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan, Hubei 430062, PR China.
Food Chemistry
|September 21, 2024
Summary
Post-harvest ripening significantly alters rapeseed (Brassica napus L.) quality, decreasing chlorophyll and moisture while increasing oil and total phenol content. This study establishes a quality evaluation model for ripening rapeseed.
Area of Science:
- Agricultural Science
- Food Chemistry
- Plant Physiology
Background:
- Rapeseed (Brassica napus L.) is a vital global oil crop, yet the impact of post-harvest ripening on its quality remains poorly understood.
- Variability in rapeseed quality necessitates a deeper understanding of post-harvest changes.
Purpose of the Study:
- To investigate the relationship between post-harvest ripening periods (PHR) and the physicochemical quality of diverse rapeseed cultivars.
- To develop a comprehensive quality evaluation model for rapeseeds undergoing post-harvest ripening.
Main Methods:
- Comprehensive analysis of physicochemical indicators, including chlorophyll, carotenoid, moisture, oil, and total phenol content (TPC).
- Identification and quantification of lipid molecules across 13 subclasses, focusing on triacylglycerol (TG) and diacylglycerol (DG).
- Application of correlation analysis, hierarchical cluster analysis (HCA), and principal component analysis (PCA) for model development and validation.
Main Results:
- Post-harvest ripening (PHR) caused a progressive decline in chlorophyll, carotenoid, and moisture content.
- Oil and total phenol content (TPC) consistently increased during PHR.
- Lipidomic analysis revealed an increase in triacylglycerol (TG) and a decrease in diacylglycerol (DG) throughout PHR.
Conclusions:
- Post-harvest ripening significantly impacts rapeseed's physicochemical and lipid profiles.
- A robust quality evaluation model for post-harvest ripening rapeseeds was successfully developed and verified.
- This research contributes to the advancement of agricultural product development and quality assessment.
