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Vitamin E and carotenoid accumulation during kernel development in two varieties of Castanea henryi |
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| Authors: | Jiaqi Li Nan Xiang Jiayu Chen Zhicheng Shu Ling Chen Xinbo Guo |
| Affiliation: | 1. School of Food Science and Engineering, Ministry of Education Engineering Research Centre of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou, 510640 China Contribution: Methodology (equal), Software (equal), Validation (equal), Writing - original draft (equal);2. School of Food Science and Engineering, Ministry of Education Engineering Research Centre of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou, 510640 China Contribution: Data curation (equal), Formal analysis (equal), Visualization (equal);3. Xingxi Agro-tech Extrension and Service Station, Zhenghe, 353600 China Contribution: Investigation (equal), Resources (equal);4. Hangzhou Wahaha Group Co., Ltd., Hangzhou, 310009 China Contribution: Project administration (equal);5. School of Food Science and Engineering, Ministry of Education Engineering Research Centre of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou, 510640 China Contribution: Conceptualization (equal), Funding acquisition (equal);6. School of Food Science and Engineering, Ministry of Education Engineering Research Centre of Starch & Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou, 510640 China |
| Abstract: | Chestnut is rich in vitamin E and carotenoids, and it is popularly consumed in many areas owing to its health benefits. This study aimed at investigating the metabolic regulation of vitamin E and carotenoids during kernel development of Castanea henryi (‘Jinzhui’ (YS) and ‘Baiyan No.1’ (WS)). Along with the increasing growth time of chestnut kernels, vitamin E contents showed a sustained increase, and γ-tocopherol was always the most abundant composition. 4-hydroxyphenyl-pruvate dioxygenase and geranylgeranyl diphosphate synthase were theorised to regulate tocotrienol biosynthesis in WS, but there was no such relationship in YS. Lutein dominated the total carotenoid content changes with a decrease at the final growth stage. Moreover, zeaxanthin and β-carotene had an overall downward trend and may be regulated by gene for 1-deoxy-D-xylulose-5-phosphate reductase. The results provide a theoretical basis for harvesting control and cultivation management of C. henryi based on nutrition enhancement. |
| Keywords: | Biosynthesis chestnut gene expression lutein phytochemical profiles secondary metabolism tocopherols |