Abstract Grapefruit (G) parts contain abundant phenolic acids and flavonoids (PPNs FLVs). The wastes created from exocarps, mesocarps (G wastes, GW) waste blanching water (WBW) lead to a considerable loss of PPNs FLVs. Here, we assessed Buntan (CB), Hayata (CBH), Peiyu (CP) cultivars observed amounts ethanolic extracts GW (GWE) WBW contained gallic acid, protocatechuic chlorogenic caffeic ferul...

color and plays an important role in the prevention of suninduced skin injury. Melanin biosynthesis proceeds through a complex series of enzymatic and chemical reactions in melanocytes. Synthesis of melanin starts from the conversion of the amino acid L-tyrosine to dopaquinone by tyrosinase, the enzyme catalyzing the rate-limiting step for melanin biosynthesis. This tyrosinase process is involv...

The inducers of increased B? hydroxylase activity which have been selected for use in the present work are 3 flavones with widely differing capacities to induce increased B? hydroxylase activity (1 5). The most active of the 3 is @3-naphthofiavone (5,6-benzofiavone), a synthetic compound. Of all flavones tested thus far, j3-naphthoflavone is the most potent inducer of increased B? hydroxylase a...

To discriminate the feasible differences and find potential similarities and relationships of Citri Reticulatae Pericarpium (CRP), this work was accomplished by a comprehensive and reliable method using gas chromatography-mass spectrometer (GC-MS) to analyze the volatile oils and high-performance liquid chromatography (HPLC) simultaneously to determine the contents of five bioactive flavonoids,...

The effects of several naturally occurring and synthetic flavonoids on the metabolism of benzo(a)pyrene and aflatoxin B1 were evaluated. Addition of apigenin, chrysin, fisetin, flavonone, galangin, hesperitin, kaempferol, morin, myricetin, haringenin, or quercetin to human liver microsomes inhibited the hydroxylation of benzo(a)pyrene. In contrast to these results, the addition of flavone, nobi...

Helicobacter pylori (H. pylori) is one of the most widespread human pathogens, and plays major roles in chronic gastritis and gastric cancer. CD74 of gastric epithelial cells has recently been identified as an adhesion molecule to urease in H. pylori. In this study, we found that CD74 is highly expressed in a constitutive manner in NCI-N87 human gastric carcinoma cells at both the protein and m...