Abstract
Thailand has both colored and non-colored rice. Thai people use rice both for consumption and health treatment. This study investigates the phytochemical profile, -glucosidase and tyrosinase inhibitory activity of water extract, ethanol extract, and methanol extract of 7 cultivars of Thaicolored rice. The results reveal that 7 cultivars of Thai-colored rice had composed of flavonoids, reducing sugar, saponins, and terpenoids. The highest potency against a-glucosidase activity was obtained from rice cultivar 6 of methanol extract with the IC50 value of 1.06 0.13 g.ml -1 , approximately 175-times more efficient than commercial drug acarbose. Moreover, methanol extract of all rice cultivars seems to have higher glucosidase inhibitory activity than other solvent extract and acarbose. In comparison, water extract of all rice cultivars had higher tyrosinase inhibitory activity than other solvents. The highest tyrosinase inhibitory efficiency was also obtained from rice cultivar 6 of water extract with the IC50 values of 10.93 3.41 g.ml -1 . Our results indicated that the highpolarity solvent can extract the bioactive compounds from plants with a high potency of -glucosidase and tyrosinase inhibitory activity. The results also suggested that rice especially colored rice had contained the bio-active compounds which related with -glucosidase and tyrosinase inhibitory activity.
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Claims 7
Claim · model-written summary
Seven cultivars of Thai-colored rice contained flavonoids, reducing sugar and saponins.
- Taxon
- rice
Oryza sativae0 - Outcome
- flavonoids, reducing sugar, saponinse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results reveal that 7 cultivars of Thai-colored rice had composed of flavonoids, reducing sugar, saponins, and terpenoids”
Claim · model-written summary
Seven cultivars of Thai-colored rice contained terpenoids.
- Taxon
- riceOryza sativae0
- Outcome
- terpenoidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results reveal that 7 cultivars of Thai-colored rice had composed of flavonoids, reducing sugar, saponins, and terpenoids”
Claim · model-written summary
The methanol extract of rice cultivar 6 had the highest alpha-glucosidase inhibitory potency, approximately 175-times that of acarbose, with an IC50 of 1.06 0.13 g.ml -1.
- Taxon
- riceOryza sativae1
- Material
- rice cultivar 6e1
- Treatment
- methanol extracte1
- Outcome
- a-glucosidase activitye1
- Direction
- highest potencye1
- Value
- 1.06 0.13 g.ml -1e1
- Qualifier
- approximately 175-times more efficient than commercial drug acarbosee1
- Comparator
- commercial drug acarbosee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The highest potency against a-glucosidase activity was obtained from rice cultivar 6 of methanol extract with the IC50 value of 1.06 0.13 g.ml -1 , approximately 175-times more efficient than commercial drug acarbose”
Claim · model-written summary
Methanol extracts of all rice cultivars showed higher alpha-glucosidase inhibitory activity than the other solvent extracts and acarbose.
- Taxon
- riceOryza sativae0
- Treatment
- methanol extracte2
- Outcome
- glucosidase inhibitory activitye2
- Direction
- highere2
- Qualifier
- seems toe2
- Comparator
- other solvent extract and acarbosee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results reveal that 7 cultivars of Thai-colored rice had composed of flavonoids, reducing sugar, saponins, and terpenoids”
e2“methanol extract of all rice cultivars seems to have higher glucosidase inhibitory activity than other solvent extract and acarbose”
Claim · model-written summary
Water extracts of all rice cultivars had higher tyrosinase inhibitory activity than the other solvents.
- Taxon
- riceOryza sativae0
- Treatment
- water extracte3
- Outcome
- tyrosinase inhibitory activitye3
- Direction
- highere3
- Comparator
- other solventse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results reveal that 7 cultivars of Thai-colored rice had composed of flavonoids, reducing sugar, saponins, and terpenoids”
e3“In comparison, water extract of all rice cultivars had higher tyrosinase inhibitory activity than other solvents”
Claim · model-written summary
The water extract of rice cultivar 6 had the highest tyrosinase inhibitory efficiency, with an IC50 of 10.93 3.41 g.ml -1.
- Taxon
- riceOryza sativae4
- Material
- rice cultivar 6e4
- Treatment
- water extracte4
- Outcome
- tyrosinase inhibitory efficiencye4
- Direction
- higheste4
- Value
- 10.93 3.41 g.ml -1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest tyrosinase inhibitory efficiency was also obtained from rice cultivar 6 of water extract with the IC50 values of 10.93 3.41 g.ml -1”
Claim · model-written summary
Rice, especially colored rice, contains bioactive compounds related to alpha-glucosidase and tyrosinase inhibitory activity.
- Taxon
- riceOryza sativae5
- Compound
- bio-active compoundse5
- Outcome
- -glucosidase and tyrosinase inhibitory activitye5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“rice especially colored rice had contained the bio-active compounds which related with -glucosidase and tyrosinase inhibitory activity”