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Total Phenolics, Phenolic Acids, Isoflavones, and Anthocyanins and Antioxidant Properties of Yellow and Black Soybeans As Affected by Thermal Processing
Abstract
The effects of boiling and steaming processes on the phenolic components and antioxidant activities of whole yellow (with yellow seed coat and yellow cotyledon) and black (with black seed coat and green cotyledon) soybeans were investigated. As compared to the raw soybeans, all processing methods caused significant (p < 0.05) decreases in total phenolic content (TPC), total flavonoid content (TFC), condensed tannin content (CTC), monomeric anthocyanin content (MAC), DPPH free radical scavenging activity (DPPH), ferric reducing antioxidant power (FRAP), and oxygen radical absorbing capacity (ORAC) in black soybeans. Pressure steaming caused significant (p < 0.05) increases in TPC, CTC, DPPH, FRAP, and ORAC in yellow soybeans. The steaming resulted in a greater retention of TPC, DPPH, FRAP, and ORAC values in both yellow and black soybeans as compared to the boiling treatments. To further investigate the effect of processing on phenolic compounds and elucidate the contribution of these compounds to changes of antioxidant activities, phenolic acids, isoflavones, and anthocyanins were quantitatively determined by HPLC. The pressure steaming treatments caused significant (p < 0.05) increases in gallic acid and 2,3,4-trihydroxybenzoic acid, whereas all treatments caused significant (p < 0.05) decreases in two predominant phenolic acids (chlorogenic acid and trans-cinnamic acid), and total phenolic acids for both yellow and black soybeans. All thermal processing caused significant (p < 0.05) increases in aglucones and beta-glucosides of isoflavones, but caused significant (p < 0.05) decreases in malonylglucosides of isoflavones for both yellow and black soybeans. All thermal processing caused significant (p < 0.05) decreases of cyanidin-3-glucoside and peonidin-3-glucoside in black soybeans. Significant correlations existed between selected phenolic compositions, isoflavone and anthocyanin contents, and antioxidant properties of cooked soybeans.
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Cites
Colorimetry of Total Phenolics with Phosphomolybdic-Phosphotungstic Acid Reagents
Singleton, V. L., & Rossi, J. A. (1965) · American Journal of Enology and Viticulture · doi:10.5344/ajev.1965.16.3.144 · Cited by 24,852
Cited by
The effect of cooking on the phytochemical content of vegetables
Palermo, M., Pellegrini, N., & Fogliano, V. (2014) · Journal of the Science of Food and Agriculture · doi:10.1002/jsfa.6478 · Cited by 401
Polyphenol-Rich Dry Common Beans (Phaseolus vulgaris L.) and Their Health Benefits
Ganesan, K., & Xu, B. (2017) · International Journal of Molecular Sciences · doi:10.3390/ijms18112331 · Cited by 336
Self-citationTan, Y., Chang, S. K. C., & Zhang, Y. (2017) · Food Chemistry · doi:10.1016/j.foodchem.2016.06.100 · Cited by 299
Self-citationXu, B., & Chang, S. K. C. (2009) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf900695s · Cited by 287
Self-citationQuinoa (Chenopodium quinoa, Willd.) as a source of dietary fiber and other functional components
Repo-Carrasco-Valencia, R. A.-M., & Serna, L. A. (2011) · Ciência e Tecnologia de Alimentos · doi:10.1590/s0101-20612011000100035 · Cited by 221
Metadata
- Authors
- Xu, B., & Chang, S. K. C.
- Venue
- Journal of Agricultural and Food Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-08-01
- Volume
- 56
- Issue
- 16
- Pages
- 7165-7175
- ISSN
- 0021-8561 (ISSN-L)
- 1520-5118
- OpenAlex
- W2020500559
- Cited by
- 330
- References
- 1
- FWCI
- 6.85
- Type
- journal article
- Language
- en
- Open access
- closed
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- Xu, B., & Chang, S. K. C. (2008). Total Phenolics, Phenolic Acids, Isoflavones, and Anthocyanins and Antioxidant Properties of Yellow and Black Soybeans As Affected by Thermal Processing. Journal of Agricultural and Food Chemistry. https://doi.org/10.1021/jf8012234
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