Soybean (Glycine max) hull valorization through the extraction of polyphenols by green alternative methods

Cabezudo, Ignacio; Meini, María Rocío; Ponte, Carla C. Di; Melnichuk, Natasha; Boschetti, Carlos E.; Romanini, Diana

doi:10.1016/j.foodchem.2020.128131

Cited by 34 publications

(12 citation statements)

References 33 publications

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“…Soy hull represents approximately 8% of the bean and is one of the by-products generated by soy flour and oil production [144]. Using a sustainable approach for valorizing soybean hull, Cabezudo et al [145] optimized alkaline hydrolysis for polyphenol extraction and tested a fermentation with Aspergillus oryzae and α-amylase hydrolysis for the same purpose. In this work, phenolic acids, anthocyanins, and isoflavones were identified by LC-MS, demonstrating the great potential of soy hull as a source of antioxidant compounds.…”

Section: Bioactive Compounds In Industrial By-products From Soybean Processing-an Overview and Trendsmentioning

confidence: 99%

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

Bragagnolo

Funari

Ibáñez

2021

Foods

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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.

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Section: Bioactive Compounds In Industrial By-products From Soybean Processing-an Overview and Trendsmentioning

confidence: 99%

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

Bragagnolo

Funari

Ibáñez

2021

Foods

View full text Add to dashboard Cite

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“…The authors found that soy by-products have 132% of the total isoflavones quantified in the soybeans, representing that soy by-products are potential sources of phenolic compounds. In addition, Cabezudo et al achieved a higher content of phenolic compounds in soy hull, a soy by-product, than in soybeans ( 70 ). They performed a green extraction based on an alkaline hydrolysis treatment, resulting in a TPC of 0.72 g gallic acid equivalents per 100 g of soybean hull.…”

Section: Resultsmentioning

confidence: 99%

Pressurized natural deep eutectic solvents: An alternative approach to agro-soy by-products

et al. 2022

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Soybeans are mainly used for food and biodiesel production. It is estimated that soy crops worldwide will leave about 651 million metric tons of branches, leaves, pods, and roots on the ground post-harvesting in 2022/23. These by-products might serve as largely available and cheap source of high added-value metabolites, such as flavonoids, isoflavonoids, and other phenolic compounds. This work aimed to explore green approaches based on the use of pressurized and gas expanded-liquid extraction combined with natural deep eutectic solvents (NADESs) to achieve phenolic-rich extracts from soy by-products. The total phenolic and flavonoid contents of the generated extracts were quantified and compared with conventional solvents and techniques. Pressurized liquid extraction (PLE) with choline chloride/citric acid/water (1:1:11 – molar ratio) at 120°C, 100 bar, and 20 min, resulted in an optimized condition to generate phenolic and flavonoid-rich fractions of soy by-products. The individual parts of soy were extracted under these conditions, with their metabolic profile obtained by UHPLC-ESI-QToF-MS/MS and potential antioxidant properties by ROS scavenging capacity. Extracts of soy roots presented the highest antioxidant capacity (207.48 ± 40.23 mg AA/g), three times higher than soybean extracts (68.96 ± 12.30). Furthermore, Hansen solubility parameters (HSPs) were applied to select natural hydrophobic deep eutectic solvents (NaHDES) as substituents for n-heptane to defat soybeans. Extractions applying NaHDES candidates achieved a similar yield and chromatography profile (GC-QToF-MS) to n-heptane extracts.

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“…Nonprotein ANFs include phenolic compounds (e.g., tannins), saponins, and alkaloids, which play important roles in plant protective mechanisms, and phytates that reduce the bioavailability of essential minerals, such as iron. However, depending on their chemical structure, effects of concentration, exposure time, and interaction with other dietary components, ANFs can also be considered pro‐nutrients with multiple health benefits, such as anti‐inflammatory, anticholesterol, antioxidant, and anticarcinogenic activities (Cabezudo et al., 2021).…”

Section: Importance Of Legumes In Human Diet As a Sustainable Protein...mentioning

confidence: 99%

Application of emerging technologies to obtain legume protein isolates with improved techno‐functional properties and health effects

Bou

Navarro-Vozmediano

Domínguez

et al. 2022

Comp Rev Food Sci Food Safe

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Current demand of consumers for healthy and sustainable food products has led the industry to search for different sources of plant protein isolates and concentrates. Legumes represent an excellent nonanimal protein source with highprotein content. Legume species are distributed in a wide range of ecological conditions, including regions with drought conditions, making them a sustainable crop in a context of global warming. However, their use as human food is limited by the presence of antinutritional factors, such as protease inhibitors, lectins, phytates, and alkaloids, which have adverse nutritional effects. Antitechnological factors, such as fiber, tannins, and lipids, can affect the purity and protein extraction yield. Although most are removed or reduced during alkaline solubilization and isoelectric precipitation processes, some remain in the resulting protein isolates. Selection of appropriate legume genotypes and different emerging and sustainable facilitating technologies, such as high-power ultrasound, pulsed electric fields, high hydrostatic pressure, microwave, and supercritical fluids, can be applied to increase the removal of unwanted compounds. Some technologies can be used to increase protein yield. The technologies can also modify protein structure to improve digestibility, reduce allergenicity, and tune technological properties. This review summarizes recent findings regarding the use of emerging technologies to obtain high-purity protein isolates and the effects on technofunctional properties and health.

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Soybean (Glycine max) hull valorization through the extraction of polyphenols by green alternative methods

Cited by 34 publications

References 33 publications

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

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

Pressurized natural deep eutectic solvents: An alternative approach to agro-soy by-products

Application of emerging technologies to obtain legume protein isolates with improved techno‐functional properties and health effects

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