Improvement of cosmeceutical properties in rice by-products by solid state fermentation with Aspergillus oryzae and effects of different extracting conditions

M. Abdul Manan, . and N. Y. Abd Rashid, . and A. Abd Ghani, . and A. Jamaluddin, . and D. L. Abd Razak, . Improvement of cosmeceutical properties in rice by-products by solid state fermentation with Aspergillus oryzae and effects of different extracting conditions. pp. 114-121. ISSN 2550-2166

Rice milling generates a lot of rice by-products and they are commonly used as an animal feed ingredient. However they have high cosmeceutical values attributed to their high content of bioactive compounds. In the present study rice by-products (broken rice and rice bran) were subjected to solid state fermentation (SSF) using Aspergillus oryzae at 30C for 12 days and their cosmeceutical potentials were then evaluated. Different extraction conditions such as the type of solvent (water 50 ethanol) and extraction temperature (30C 40C) were also optimized using a one-factor-one-time approach. Through tyrosinase inhibition assay it was observed that SSF has improved the anti-pigmentation effect of broken rice and rice bran 7.4-fold and 11.2-fold in comparison to their unfermented substrate respectively. SSF has also improved the anti-ageing effect of broken rice and offered 6.6-fold of improvement in fermented rice bran. In extraction optimization studies a stronger anti-ageing effect was observed in the water extract of both fermented substrates extracted at 40C while the anti-pigmentation effect is stronger on 50 ethanol extract in fermented rice bran. Most phenolic acids that are commonly related to cosmeceutical purposes were detected in the extracts of both fermented substrates while most of the organic acids were detected in the water extract. Our study suggests that SSF using A. oryzae could improve the cosmeceutical activities of rice byproducts and both water and 50 ethanol extracts have high potential to be developed as cosmeceutical bio-ingredients.

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Abstract

Rice milling generates a lot of rice by-products and they are commonly used as an animal feed ingredient. However they have high cosmeceutical values attributed to their high content of bioactive compounds. In the present study rice by-products (broken rice and rice bran) were subjected to solid state fermentation (SSF) using Aspergillus oryzae at 30C for 12 days and their cosmeceutical potentials were then evaluated. Different extraction conditions such as the type of solvent (water 50 ethanol) and extraction temperature (30C 40C) were also optimized using a one-factor-one-time approach. Through tyrosinase inhibition assay it was observed that SSF has improved the anti-pigmentation effect of broken rice and rice bran 7.4-fold and 11.2-fold in comparison to their unfermented substrate respectively. SSF has also improved the anti-ageing effect of broken rice and offered 6.6-fold of improvement in fermented rice bran. In extraction optimization studies a stronger anti-ageing effect was observed in the water extract of both fermented substrates extracted at 40C while the anti-pigmentation effect is stronger on 50 ethanol extract in fermented rice bran. Most phenolic acids that are commonly related to cosmeceutical purposes were detected in the extracts of both fermented substrates while most of the organic acids were detected in the water extract. Our study suggests that SSF using A. oryzae could improve the cosmeceutical activities of rice byproducts and both water and 50 ethanol extracts have high potential to be developed as cosmeceutical bio-ingredients.

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Item Type:	Article
AGROVOC Term:	Rice
AGROVOC Term:	Aspergillus oryzae
AGROVOC Term:	Solid state fermentation
AGROVOC Term:	Extraction
AGROVOC Term:	Phenolic acids
AGROVOC Term:	Inorganic acids
AGROVOC Term:	Statistical analysis
AGROVOC Term:	Analysis of variance
AGROVOC Term:	Food processing
AGROVOC Term:	Convergent improvement
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10571

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