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Review
. 2021 Jun 7;10(6):1308.
doi: 10.3390/foods10061308.

Metabolomics as a Tool to Study Underused Soy Parts: In Search of Bioactive Compounds

Felipe Sanchez Bragagnolo  1   2 , Cristiano Soleo Funari  1 , Elena Ibáñez  2 , Alejandro Cifuentes  2
Affiliations
Review

Metabolomics as a Tool to Study Underused Soy Parts: In Search of Bioactive Compounds

Felipe Sanchez Bragagnolo et al. Foods. .

Abstract

The valorization of agri-food by-products is essential from both economic and sustainability perspectives. The large quantity of such materials causes problems for the environment; however, they can also generate new valuable ingredients and products which promote beneficial effects on human health. It is estimated that soybean production, the major oilseed crop worldwide, will leave about 597 million metric tons of branches, leaves, pods, and roots on the ground post-harvesting in 2020/21. An alternative for the use of soy-related by-products arises from the several bioactive compounds found in this plant. Metabolomics studies have already identified isoflavonoids, saponins, and organic and fatty acids, among other metabolites, in all soy organs. The present review aims to show the application of metabolomics for identifying high-added-value compounds in underused parts of the soy plant, listing the main bioactive metabolites identified up to now, as well as the factors affecting their production.

Keywords: Glycine max; agricultural waste; foodomics.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Foodomics proposes a holistic approach to develop ingredients and products with health benefits from foods and their by-products.
Figure 2
Figure 2
World soybean production 2000–2020, in million metric tons.
Figure 3
Figure 3
Underused soy parts left on the soil just after the soybean harvest.
Figure 4
Figure 4
Classification of the metabolites identified in soy roots, leaves, branches, and pods according to ClassyFire.
Figure 5
Figure 5
Chemical structures of soyasapogenol A, linoleic acid, naringenin, and formononetin-7-O-glucoside, which are examples of bioactive compounds identified in soy roots.
Figure 6
Figure 6
Chemical structures of apigenin, glyceollin I, soyasaponin I, and trigonelline, which are examples of bioactive compounds identified in soy leaves.
Figure 7
Figure 7
Chemical structures of shikimic acid, stearic acid, 7,4′-dihydroxyflavone, and glycitin, which are examples of bioactive compounds identified in soy branches.
Figure 8
Figure 8
Chemical structures of citric acid, camphene, quercetin, and hexadecanoic acid, which are examples of bioactive compounds identified in soy pods.
Figure 9
Figure 9
Industrial soybean processing and its respective products and by-products.
See this image and copyright information in PMC

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