Takashi Tanaka

Publications397
h-index46
Citations8,547
Highly Influential Citations266
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Facile discrimination of aldose enantiomers by reversed-phase HPLC.
TLDR
The reaction was applied to the determination of absolute configuration the sugar residues of an aroma precursor and direct HPLC analysis of the reaction mixture and UV detection at 250 nm discriminated D- and L-enantiomers of aldoses. Expand
Antimicrobial activity of 10 different plant polyphenols against bacteria causing food-borne disease.
TLDR
The relatively lower mean MIC values of 1, 2, 5, and 6 suggest the importance of 3,4,5-trihydroxyphenyl groups in antibacterial activity. Expand
Antibacterial spectrum of plant polyphenols and extracts depending upon hydroxyphenyl structure.
The relationship between the structure and antibacterial activity of 22 polyphenols was analyzed by using minimum inhibitory concentration (MIC) as a criterion against 26 species of bacteria which… Expand
Inhibitory activities of proanthocyanidins from persimmon against oxidative stress and digestive enzymes related to diabetes.
TLDR
Oligomers rather than polymers from proanthocyanidins of persimmon peel may be expected to be a more promising antioxidative and antidiabetic agent in relation to utilization in biological systems and their inhibitory activities on digestive enzymes and advanced glycation endproduct (AGE) formation were evaluated. Expand
Trypanocidal activity of extracts and compounds from the stem bark of Anogeissus leiocarpus and Terminalia avicennoides
TLDR
Effect of the compounds on fibroblasts did not reveal serious toxicity at moderate concentration but is concentration dependent, and hydrolysable tannins with a range of activity were revealed. Expand
Chemistry of Secondary Polyphenols Produced during Processing of Tea and Selected Foods
This review will discuss recent progress in the chemistry of secondary polyphenols produced during food processing. The production mechanism of the secondary polyphenols in black tea, whisky,… Expand
α-Glucosidase Inhibitory Profile of Catechins and Theaflavins
To clarify the postprandial glucose suppression effect of flavonoids, the inhibitory effects of catechins and theaflavins against alpha-glucosidase (AGH) were examined in this study. It was initially… Expand
α-Amylase and lipase inhibitory activity and structural characterization of acacia bark proanthocyanidins.
TLDR
The bark extract of Acacia mearnsii showed strong lipase and α-amylase inhibition activities and a modified thiol degradation method using strongly acidic conditions was applied to the extract to yield threeThiol degradation products derived from robinetinidol units. Expand
Amla (Emblica officinalis Gaertn.) attenuates age-related renal dysfunction by oxidative stress.
TLDR
The results indicate that amla would be a very useful antioxidant for the prevention of age-related renal disease and reduced the iNOS and COX-2 expression levels by inhibiting NF-kappaB activation in the aged rats. Expand
alpha-Glucosidase inhibitory profile of catechins and theaflavins.
TLDR
It is demonstrated for the first time that TF-3-O-Gal can suppress glucose production from maltose through inhibition of AGH in the gut through the effects of catechins and theaflavins against alpha-glucosidase. Expand
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