Green Labelled Rice Shows a Higher Nutritional and Physiochemical Quality Than Conventional Rice in China

Foods

Baozhen Zhang¹  Jiahui Zhong¹  Jiuliang Xu¹  Xuexian Li¹ 

[1] The Key Plant-Soil Interaction Laboratory, Department of Plant Nutrition, Ministry of Education, China Agricultural University, Beijing 100193, China;

关键词: chinese green food;    rice;    physicochemical properties;    elements;    metabolomics;   

DOI  :  10.3390/foods10050915

来源: DOAJ

【 摘 要 】

In China, green food refers to a wide array of certified agricultural and processed edible commodities that are produced strictly following defined standard protocols and labelled with a specified “Green Food” logo. The demand for green labelled rice is rapidly growing due to its higher quality and adherence to safety standards compared to conventional rice. Therefore, the physicochemical and nutritional quality of green rice needs to be further investigated for consumers’ benefits. Using Daohuaxiang 2, one of the most famous types of green rice, we found that green rice was significantly superior to conventional rice in terms of thousand kernel weight, chalkiness, amylose content, and rheological properties. Green rice contained lower levels of heavy metals than conventional rice due to a dramatic reduction in chemical inputs during its cultivation. The concentrations of Cr, As, Cd, Pb in green rice decreased, respectively, from 98.7 to 180.1 μg/kg, 49.8 to 62.3 μg/kg, 7.8 to 9.1 μg/kg, and 29.0 to 42.8 μg/kg on average. Gas chromatography coupled with mass spectrometry (GC–MS)-based metabolomics, in combination with multivariate analysis, revealed that 15 metabolites differentially accumulated when comparing green and conventional rice. Among these, 12 metabolites showed a high accumulation in green rice, including seven amino acids, two sugars, and three fatty acids. Overall, our results suggest the superior quality of a type of green rice that is popular in China, which may boost green rice consumption and facilitate the further expansion of green rice production in China.

【 授权许可】

Unknown