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| Chemical composition analysis and site geological background of Castanea mollissima Blume quality in Tianjin |
| WANG Wei-Xing, CAO Shu-Ping, LI Gong-Ke, ZHANG Ya-Na |
| Tianjin Institute of Geological Survey, Tianjin 300191, China |
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Abstract Castanea mollissima Blume is a low cost and high efficiency economic tree species; nevertheless, due to the regional differences, its quality is very different. The natural condition of the Jizhou Mountain area in Tianjin is suitable for the planting of Castanea mollissima Blume. In this paper, Castanea mollissima Blume in the main producing areas of Tianjin was studied from the chemical composition of Castanea mollissima Blume quality and site geological background. The results show that the average total flavonoids of Castanea mollissima Blume in Tianjin is 0.75 g/100g, the average total flavonoids is 8.11 g/100g, the average water content is 48.78%, the average total sugar is 11.53%, the average protein is 8.80 g/100g, and the average vitamin C is 15.18 mg/100g. N, K, and P, Mg, Ca, S, which belong to a large amount of nutrient elements in the soil, are the highest in the fruits of Castanea mollissima Blume. The producing area of Castanea mollissima Blume mainareas is mainly the Chuanlinggou Formation of the Changcheng System, with the lithology being dark shale silty shale. The values of SiO2, K, Corg, N, Fe, B, Mn,, Ca, and pH are very suitable for the growth and fruit quality of Castanea mollissima Blume.
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Received: 27 October 2016
Published: 20 October 2017
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