The carotenoids degradation and the formation of volatiles were examined by simulating Port wine aging. A two year old red Port wine was saturated with oxygen, supplemented with lutein and β-carotene and kept at 60°C during 87h. A similar study was performed in a model wine solution. Results showed that the percentage decrease in lutein levels was, respectively, 79% and 95%, in the wine model s...

Cell extracts o f the Cl 15 (^-carotene-accumulating) strain o f Phycomyces blakesleeanus were incubated with either [2-l4C]MVA or [1-I4C]IPP and a range o f possible inhibitors of carotenogenesis, including bleaching herbicides, biphenyl com pounds and geranylacetone. Several o f these compounds were potent inhibitors o f /7-carotene formation and caused the accumulation o f phytoene. No other...

The effects of the bleaching herbicide amitrole on the carotenoid composition and ultrastructure were studied du­ ring the transformation of chloroplasts into chromoplasts in the tulip tree (Liriodendron tulipifera L.). Amitrole inhi­ bited the accumulation of (3-carotene and of an unidentified carotene. The biosynthesis of xanthophylls was similar to that in the control. Amitrole caused the ap...

The aim of this study was to evaluate the probiotic properties lactic acid bacteria (LAB) isolated from kimchi and antioxidant anti-inflammatory activities heat-killed LAB strains. Regarding properties, Lactiplantibacillus plantarum SMF398 L. SMF470 can survive under artificial gastric condition adhere strongly HT-29 cells. strains showed strong antimicrobial activity co-aggregation against pat...

Angiotensin II is one of the key regulatory peptides implicated in the pathogenesis of liver disease. The mechanisms underlying the salubrious role of α-tocopherol and β-carotene on liver pathology have not been comprehensively assessed. Here, we investigated the mechanisms underlying the role of Angiotensin II on hepatic damage and if α-tocopherol and β-carotene supplementation attenuates hepa...

Laccase is widely used in several industrial applications and co-culture is a common method for enhancing laccase production in submerged fermentation. In this study, the co-culture of four yeasts with Pleurotus eryngii var. ferulae was found to enhance laccase production. An analysis of sterilization temperatures and extraction conditions revealed that the stimulatory compound in yeasts was te...

The essential oil of Verbena officinalis growing in Iran was extracted using hydro-distillationmethod and the antibacterial and antioxidant activities were evaluated. The antibacterial activity of the essentialoil against a Gram-positive (S. aureus ATCC25923) and Gram negative (E. coli ATCC 25922) were examined.The results obtained revealed that the essential oil exhibited variable levels of an...

H. italicum essential oil (EO) is one of the most popular ingredients utilized by cosmetic industry, and it also used as natural antioxidant a value-added ingredient in food products. The chemical composition EO cultivated Serbia was analyzed gas chromatography–mass spectrometry. quantitative structure–retention relationship to predict retention indices constituents acquired GC-MS data, applyin...

β-Carotene is the major dietary source of provitamin A. Central cleavage of β-carotene catalyzed by β-carotene oxygenase 1 yields two molecules of retinaldehyde. Subsequent oxidation produces all-trans-retinoic acid (ATRA), which functions as a ligand for a family of nuclear transcription factors, the retinoic acid receptors (RARs). Eccentric cleavage of β-carotene at non-central double bonds i...

BACKGROUND Model-based compartmental analysis of data on plasma retinol kinetics after administration of labeled retinol provides unique information about whole-body vitamin A metabolism. If labeled β-carotene is coadministered, its bioefficacy relative to the retinol reference dose can also be estimated. OBJECTIVES The objectives were to model plasma retinol kinetics after administration of ...