Publication: Rice panicles: New promising unconventional cereal product for health benefits
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Issued Date
2015
Resource Type
File Type
application/pdf
ISSN
7335210
Other identifier(s)
2-s2.0-84950269852
Rights Holder(s)
Scopus
Bibliographic Citation
Journal of Cereal Science. Vol 66, (2015), p.10-17
Suggested Citation
Kanlayavattanakul M., Lourith N., Tadtong S., Jongrungruangchok S. Rice panicles: New promising unconventional cereal product for health benefits. Journal of Cereal Science. Vol 66, (2015), p.10-17. doi:10.1016/j.jcs.2015.09.001 Retrieved from: https://hdl.handle.net/20.500.14740/6037
Abstract
Historically, rice has been served as a food and as an herbal remedy. The claimed therapeutic properties of rice-derived products have attracted a considerable amount of attention, but these therapeutic properties are currently underestimated. Rice panicles of Phitsanulok 2 (PL), Suphan Buri 1 (SP) and San Pa Tong 1 (ST) varieties were compared based on their antioxidant activities and total phenolic content (TPC). The crude fiber, fat and mineral contents of PL were significantly (p < 0.05) greater than those of SP and ST. Phenolics were particularly found in PL, including insoluble phenolics in the PL_50%EtOH_EtOAc (Ins), PL_EtOAc_Direct (Ins) and PL_EtOAc (Ins) extracts. These extracts were comparable in their TPC, and ABTS and DPPH scavenging activities. The FRAP reducing power of PL_EtOAc_Direct (Ins) was significantly (p < 0.05) greater than those of the others, and it was similar to the anti-tyrosinase effect. All of the extracts were non-cytotoxic in fibroblasts and cultured neurons. The neuroprotective and neuritogenic activities were significant (p < 0.05) in PL_50%EtOH_EtOAc (Ins). The extracts contained health-promoting phenolics, particularly p-coumaric (2477-3153 μg/ml), ferulic (329-347 μg/ml) and caffeic (387-413 μg/ml) acids. Rice panicle extracts are therefore highlighted as potential antioxidants for health promotion products. © 2015 Elsevier Ltd.