Relationship between Lotus Root Quality and Geochemical Conditions in the Xinken Lotus Root Producing Area of Guangzhou

GU Tao; ZHU Xiao-hua; ZHAO Xin-wen; JIANG Tuo; QIU Xiao-fei; ZHENG Xiao-zhan; SHUAI Qin

doi:10.15898/j.cnki.11-2131/td.202109290136

2021 Vol. 40, No. 6

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GU Tao, ZHU Xiao-hua, ZHAO Xin-wen, JIANG Tuo, QIU Xiao-fei, ZHENG Xiao-zhan, SHUAI Qin. Relationship between Lotus Root Quality and Geochemical Conditions in the Xinken Lotus Root Producing Area of Guangzhou[J]. Rock and Mineral Analysis, 2021, 40(6): 833-845. doi: 10.15898/j.cnki.11-2131/td.202109290136

Citation:

GU Tao, ZHU Xiao-hua, ZHAO Xin-wen, JIANG Tuo, QIU Xiao-fei, ZHENG Xiao-zhan, SHUAI Qin. Relationship between Lotus Root Quality and Geochemical Conditions in the Xinken Lotus Root Producing Area of Guangzhou[J]. Rock and Mineral Analysis, 2021, 40(6): 833-845. doi: 10.15898/j.cnki.11-2131/td.202109290136

Relationship between Lotus Root Quality and Geochemical Conditions in the Xinken Lotus Root Producing Area of Guangzhou

1.
Key Laboratory of Eco-Geochemistry, Ministry of Natural Resources; National Research Center for Geoanalysis, Beijing 100037, China
2.
Research Center for Petrogenesis and Mineralization of Granitoid Rocks, China Geological Survey, Central South China Innovation Center for Geosciences, Wuhan 430205, China
3.
Faculty of Material Science and Chemistry, China University of Geosciences(Wuhan), Wuhan 430074, China
4.
Central South China Innovation Center for Geosciences, Wuhan 430205, China
5.
Geological Survey of Guangzhou, Guangzhou 510440, China

More Information

Corresponding author: SHUAI Qin, shuaiqin@cug.edu.cn

Received Date: 29 September 2021

Revised Date: 05 November 2021

Accepted Date: 12 November 2021

Publish Date: 28 November 2021

Abstract

Abstract

BACKGROUND
Environmental geochemical conditions affect the quality of famous and special agricultural products. Xinken lotus root is the national product of geographical indication. Exploring the relationship between the geological background of the production area and the quality of lotus root is of great significance to the large-scale planting of Xinken lotus root.
OBJECTIVES
To reveal the correlation between the quality of lotus root and the environmental geochemical characteristics in the producing area.
METHODS
Sediment, surface water and fresh lotus root in the Xinken area were systematically sampled and analyzed.
RESULTS
The concentrations of nutrients, i.e., Mn, Zn, Mo, Co, V and Fe, in the sediment of the lotus root pond were high, in the first grade (rich) level. Selenium was mainly in proper amounts and high selenium grade. The concentrations of Cr, Cu, Hg, Ni, Pb and Zn were lower than those of the soil pollution risk threshold of agricultural land. Cu, Zn, Se, B, Hg, Cd, As, Cr(Ⅵ), Pb and Ni in surface water of the lotus pond met the requirement for irrigation water quality. The lotus root was rich in starch, soluble sugar, K, P, Ca, Mg, Fe, Zn and Se, and the contents of heavy metals and crude fiber were low. The average bioaccumulation coefficients of lotus root for different elements ranged from 0.0484 to 65.67. The enrichment ability of P was the strongest and that of Ge was the weakest. There was a significant positive correlation between B and starch in lotus root pond sediment (p ≤ 0.05), between Ca and protein, while a significant negative correlation between As and soluble sugar. The contents of B, Co, Fe, Mg, Mn, V, Ca and Ge in the sediment of the lotus pond were high, which was beneficial to the accumulation of nutrients in lotus root, and thus production of safe and high-quality lotus roots.
CONCLUSIONS
Importance should be attached to the supplement of organic matter, Ca, N and Ge in the lotus pond during the planting process and more attention to the potential ecological security risks caused by Cd and As.
- Xinkentown area /
- sediment /
- surface water /
- inductively coupled plasma-mass spectrometry/optical emission spectrometry /
- geochemical conditions /
- quality of lotus root

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