Field sampling along the Siao Yai River in northeastern Thailand compared bran oil from glutinous RD6 and non-glutinous KDML105 across salinity-affected sites. Higher salinity was associated with more unsaturated lipid profiles, carotenoids, and antioxidant activity, without a detected oil-yield difference.
Key findings
- Stearic and arachidic acids decreased, while linoleic acid, total PUFA, and unsaturated-to-saturated ratios increased at higher salinity. Antioxidant activity and carotenoids rose, γ-oryzanol varied by variety, oil calcium increased, SR-FTIR triacylglycerol features remained similar, and yield did not differ.
Why this matters globally
The findings may support valorization of bran oil from salt-affected areas and selection of resilient varieties, while recognizing salinity's broader harm to crops, ecosystems, and soil sustainability.
Thai researcher contribution
Nakhon Ratchasima Rajabhat University, Mahasarakham University, and the Synchrotron Light Research Institute linked Isan saline soils with oil biochemistry and advanced spectroscopy.
Limitations to consider
Observational field comparisons confound salinity with soil, water, weather, management, and variety. Plot and season counts are unstated. In vitro antioxidant capacity is not a human benefit, and nutritional relevance requires effect-size assessment.
Verify the original sources
PeerJRead the original article↗DOI: 10.7717/peerj.21476