NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2024, Vol. 36 ›› Issue (增刊1): 70-75.

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Analysis of main chemical components in leaves of Camellia ‘Spring Festival’ at different growth stages

WU Yin1,DONG Qing-yun2,LI Bing-ling2,ZHANG Ya-li1 *   

  1. 1Forestry & Fruit Tree Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai 201403,China;2College of Landscape Architecture,Beijing Forestry University,Beijing 100083,China
  • Online:2024-09-14 Published:2024-07-17

Abstract:

Nutrient content of leaves at different growth stages of Camellia ‘Spring Festival’ were studied so as to evaluate the cultivar’s application value.Five nutritional compositions,eight active ingredients and nine mineral elements of leaf buds,tender leaves,and mature leaves were detected and compared.Results indicated that the content of crude protein in leaf buds were significantly higher than that in tender leaves and mature leaves,while the contents of ash,crude fiber,fat and total sugar in mature leaves were significantly the highest among the three growth stages.The content of tea polyphenols,theanine and tea polysaccharides in leaf buds and tender leaves were significantly higher than that in mature leaves.The content of tea polyphenol in tender leaves was the highest which reached to 151.42±20.95 mg/g.Content of theanine and tea polysaccharides in leaf buds were 21.01±2.36 mg/g and 151.33±24.70 μg/g,respectively.The caffeine content at three different growth stages were all less than 1%.Camellia ‘Spring Festival’ is a plant with high kalium content and low sodium content.The kalium content in leaf buds and tender leaves were significantly higher than that in mature leaves,on the contrary,the sodium content was significantly lower than that in mature leaves.The content of iron and selenium at different growth stages were higher than that in reported tea leaves.From the content of the main nutrients and active ingredients of Camellia ‘Spring Festival’,as well as the main mineral elements,Camellia 'Spring Festival' has important development potential in food development,tea breeding and other fields.

Key words: Camellia ‘Spring Festival’, nutritional compositions, active ingredients, mineral elements

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