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Metabolites
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Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products
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Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products

A special issue of Metabolites (ISSN 2218-1989).

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 8242

Special Issue Editors

Dr. Yong Li

E-Mail Website
Guest Editor
Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
Interests: metabonomics; metabolite composition; nutritional quality of agricultural products; plant metabolism; organic pollutants; chemometrics
Dr. Xiangyang Yu

E-Mail Website
Guest Editor
Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
Interests: food quality control; food analysis; nutritional quality of agricultural products; fruit development and nutrition; organic pollutants; risk assessment
Dr. Hui-Wen Gu

E-Mail Website
Guest Editor
College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China
Interests: untargeted metabolomics; LC-MS; GC-MS; food authenticity; geographical origin traceability; tea; wine; chemometrics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

As living standards rise, more and more people pay close attention to the nutritional quality of agricultural products. Agricultural products not only contain nutrients, including proteins, functional dietary fiber, and starch, but also have an abundance of phytochemicals, including amino acids, organic acids, lipids, vitamins, phenolics, phytosterols, etc. Many phytochemicals have health-promoting benefits, such as inhibiting certain cancers and promoting cardiovascular health. The content of these phytochemicals in agricultural products depends on cultivars, cultivation patterns, climatic conditions, harvest times, storage conditions, quality grades, etc. Metabolomics can examine a broad range of compounds with different chemical natures and solubilities in organisms and provide information about intensity changes. Metabolomics approaches also reveal novel connections between metabolites and biological characteristics under various cultivation and process conditions, geographical distributions, contaminant and environmental stressors and genetic variations.

This Special Issue of Metabolites, “Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products”, will not only focus on the discovery and identification of phytochemicals relating to the nutrition and quality of agricultural products, but will also reveal the difference of the metabolism and accumulation of phytochemicals in agricultural products among various cultivar types, cultivation patterns, climatic conditions, harvest times and storage conditions. Manuscripts dealing with other challenging issues are also highly desired. Topics to be covered in this Special Issue include the development and application of new metabolomics methods, the mining and identification of new metabolites, the regulation and metabolism of nutrients, the comparison of nutritional constituents, the nutritional quality evaluation of agricultural products, etc.

Dr. Yong Li
Dr. Xiangyang Yu
Dr. Hui-Wen Gu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metabolites is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • agricultural products
  • composition analysis
  • nutritional quality
  • metabolism
  • metabolomics
  • metabolic pathway
  • metabolic profiling
  • authentication and traceability

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Published Papers (4 papers)

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Research

14 pages, 2445 KiB  
Article
Analysis of Metabolites and Metabolic Pathways of Three Chinese Jujube Cultivar
by Hongxia Liu, Mengyao Yuan, Hui Liu, Lefei Wang and Xusheng Zhao
Metabolites 2023, 13(6), 714; https://doi.org/10.3390/metabo13060714 - 31 May 2023
Cited by 2 | Viewed by 1448
Abstract
Most studies on metabolites in jujube fruits focus on specific types of metabolites, but there are only a few comprehensive reports on the metabolites in jujube fruits. In order to understand the variance of metabolites in fruits of different jujube varieties. The objective [...] Read more.
Most studies on metabolites in jujube fruits focus on specific types of metabolites, but there are only a few comprehensive reports on the metabolites in jujube fruits. In order to understand the variance of metabolites in fruits of different jujube varieties. The objective of this study was to explore the metabolic components of jujube fruit by comparing three cultivars, namely Linyi LiZao (LZ), Jiaocheng SuantianZao (STZ), and Xianxian Muzao (MZ). The metabolites present in the fruits of these three cultivars were evaluated and compared. The results revealed the detection of 1059 metabolites across the three jujube varieties, with each cultivar exhibiting distinct metabolic characteristics. Notably, MZ exhibited a higher abundance of six metabolite classes, namely amino acids and derivatives, flavonoids, lipids, organic acids, phenolic acids, and terpenoids, compared to LZ. Conversely, LZ exhibited higher concentrations of alkaloids, lignans, coumarins, nucleotides, and their derivatives compared to the other two cultivars. In terms of STZ, its content of amino acids and derivatives, lignans and coumarins, organic acids, and phenolic acids was largely similar to that of LZ. However, the content of alkaloids, nucleotides, and their derivatives, and terpenoids was significantly higher in STZ compared to LZ. Additionally, STZ exhibited lower levels of flavonoids and lipids compared to LZ. Moreover, MZ was found to be less nutritionally rich than STZ, except for lignans and coumarins, as it displayed lower levels of all the metabolites. KEGG pathway enrichment analysis revealed six significantly different metabolic pathways (p < 0.05) between LZ and MZ, including arginine and proline metabolism, sphingolipid metabolism, flavonoid biosynthesis, glutathione metabolism, glycerophospholipid metabolism, and cysteine and methionine metabolism. The metabolites in STZ and MZ exhibited three significantly different pathways (p < 0.05), primarily associated with flavonoid biosynthesis, arginine and proline metabolism, and sphingolipid metabolism. The significantly differential metabolites between LZ and STZ were observed in the phenylpropionic acid biosynthesis pathway and the ubiquinone and other terpenoid-quinone biosynthesis pathways. LZ showed a closer relationship with STZ than with MZ. STZ and LZ exhibited higher medicinal values, while LZ had lower acidity and MZ displayed better antioxidant activity. This study presents the first thorough analysis of metabolites in LZ, STZ, and MZ cultivars, which can serve as a theoretical basis for quality analysis, functional research, and classification processing of jujube fruit. Full article
(This article belongs to the Special Issue Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products)
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14 pages, 2122 KiB  
Article
Metabolomics Analysis of Different Tissues of Lonicera japonica Thunb. Based on Liquid Chromatography with Mass Spectrometry
by Yan Wang, Lili Li, Wenhua Ji, Shuang Liu, Jiali Fan, Heng Lu and Xiao Wang
Metabolites 2023, 13(2), 186; https://doi.org/10.3390/metabo13020186 - 27 Jan 2023
Cited by 9 | Viewed by 2243
Abstract
Lonicera japonica Thunb. (LJT) has been widely used as medicines or food additives in Asian countries for thousands of years. The flower buds are often medicinally used, and the other tissues are ignored. However, flowers, leaves and stems have also been reported to [...] Read more.
Lonicera japonica Thunb. (LJT) has been widely used as medicines or food additives in Asian countries for thousands of years. The flower buds are often medicinally used, and the other tissues are ignored. However, flowers, leaves and stems have also been reported to have antimicrobial, anti-inflammatory and antioxidant effects. In the current study, un-targeted metabolomics analysis was performed to investigate the metabolic difference among different tissues (flowers, flower buds, stems and leaves) of LJT based on liquid chromatography with mass spectrometry. A total of 171 metabolites were identified, including 28 flavonoids, 35 phenolic acids, 43 iridoids, 9 amino acids, 6 nucleotides, 16 fatty acids, 22 lipids and 12 others. Four new secondary metabolites were discovered. Some flavonoids and iridoids were not detected in leaves and stems. Principal component analysis showed significant differences among four different tissues. Some 27, 81, 113 differential metabolites were found between flowers/flower buds, leaves/flower buds, stems/flower buds, respectively. Primary metabolites showed a higher content in the flowers and flower buds. For the flavonoids, flavones were mainly accumulated in the leaves, flavonols were mainly accumulated in the flower buds, and acylated flavonol glucosides were mainly accumulated in the flowers. Most phenolic acids showed a higher content in the flowers or flower buds, while phenolic acid-glucosides showed significantly higher content in the flower buds. The most abundant iridoids in the LJT also showed a higher content in the flowers and flower buds. These results can provide new insights into the understanding of the metabolites changes in different tissues, and lay a theoretical foundation for the comprehensive utilization of LJT. Full article
(This article belongs to the Special Issue Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products)
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12 pages, 4607 KiB  
Article
Metabolites Associated with the Main Nutrients in Two Varieties of Purple Rice Processed to Polished Rice
by Qiangqiang Xiong, Runnan Wang, Changhui Sun, Ruizhi Wang, Xiaoyu Wang, Yu Zhang, Hongcheng Zhang and Jinyan Zhu
Metabolites 2023, 13(1), 7; https://doi.org/10.3390/metabo13010007 - 20 Dec 2022
Cited by 3 | Viewed by 1766
Abstract
Under the same nitrogen fertilizer and cultivation conditions, the nutrients of rice are strongly affected during the processing of brown rice to polished rice, especially in special rice varieties. In this study, twenty-two amino acids in brown and polished rice of two purple [...] Read more.
Under the same nitrogen fertilizer and cultivation conditions, the nutrients of rice are strongly affected during the processing of brown rice to polished rice, especially in special rice varieties. In this study, twenty-two amino acids in brown and polished rice of two purple rice varieties were quantified using targeted metabolomics, and the relationships among the main nutrients, mineral elements and metabolites were analysed. The results showed that the amino acid levels in YZN1_H (polished rice of Yangzinuo No. 1) and YZN2_H (polished rice of Yangzinuo No. 2) decreased to different degrees compared with those in YZN1_B (brown rice of Yangzinuo No. 1) and YZN2_B (brown rice of Yangzinuo No. 2). Citric acid is closely associated with amino acids. The total sugar (TS), ATP, and soluble dietary fiber (SDF) levels in YZN1_B decreased by 9.37%, 53.85%, and 75.71%, respectively, compared with those in YZN1_H. The TS, ATP, and SDF levels in YZN2_B decreased significantly by 6.92%, 21.03%, and 76.78%, respectively, compared with those in YZN2_H. Citric acid was significantly negatively correlated with ATP and SDF but significantly positively correlated with carotenoids. The Se content in YZN1_H was significantly higher than that in YZN1_B by 87.02%. The Se content in YZN2_H was significantly higher than that in YZN2_B by 72.02%. Citric acid was significantly positively correlated with Fe, Mn, Ca, and Mg. Citric acid was identified as a candidate key metabolite that affects changes in the main nutrients in purple rice during processing. Full article
(This article belongs to the Special Issue Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products)
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13 pages, 2995 KiB  
Article
Metabolomic Analysis Reveals the Effect of Insecticide Chlorpyrifos on Rice Plant Metabolism
by Qi’er Mu, Mingxia Zhang, Yong Li, Fayun Feng, Xiangyang Yu and Jinfang Nie
Metabolites 2022, 12(12), 1289; https://doi.org/10.3390/metabo12121289 - 19 Dec 2022
Cited by 12 | Viewed by 2217
Abstract
Pesticides as important agricultural inputs play a vital role in protecting crop plants from diseases and pests; however, the effect of pesticides on crop plant physiology and metabolism is still undefined. In this study, the effect of insecticide chlorpyrifos at three doses on [...] Read more.
Pesticides as important agricultural inputs play a vital role in protecting crop plants from diseases and pests; however, the effect of pesticides on crop plant physiology and metabolism is still undefined. In this study, the effect of insecticide chlorpyrifos at three doses on rice plant physiology and metabolism was investigated. Our results revealed that chlorpyrifos cause oxidative stress in rice plants and even inhibit plant growth and the synthesis of protein and chlorophyll at high doses. The metabolomic results suggested that chlorpyrifos could affect the metabolic profiling of rice tissues and a total of 119 metabolites with significant changes were found, mainly including organic acids, amino acids, lipids, polyphenols, and flavonoids. Compared to the control, the content of glutamate family amino acids were significantly disturbed by chlorpyrifos, where defense-related proline and glutathione were significantly increased; however, glutamic acid, N-acetyl-glutamic acid and N-methyl-glutamic acid were significantly decreased. Many unsaturated fatty acids, such as linolenic acid and linoleic acid, and their derivatives lysophospholipids and phospholipids, were significantly accumulated in chlorpyrifos groups, which could act as osmolality substances to help rice cells relieve chlorpyrifos stress. Three organic acids, aminobenzoic acid, quinic acid, and phosphoenolpyruvic acid, involved in plant defenses, were significantly accumulated with the fold change ranging from 1.32 to 2.19. In addition, chlorpyrifos at middle- and high-doses caused the downregulation of most flavonoids. Our results not only revealed the effect of insecticide chlorpyrifos on rice metabolism, but also demonstrated the value of metabolomics in elucidating the mechanisms of plant responses to stresses. Full article
(This article belongs to the Special Issue Metabolism and Composition Analysis of Nutritional Quality of Agricultural Products)
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