ascorbic-acid and diphenyl

A recently optimized rapid, cheap, and accurate coulometric method has been exploited to determine the antioxidant capacity of bergamot (Citrus bergamia Risso) by-products, including first (FPJ) and second press juices (SPJ), in comparison to analogous products from several citrus species. Extracts from the entire edible part (i.e., juice and pulp) and de-oiled peel of bergamot were also assayed. The Coulometrically Determined Antioxidant Capacity (CDAC) data, expressed as moles of electrons per mass of sample, were evaluated with other parameters such as total phenolic compounds, ascorbic acid, total carotenoids, and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical inhibition. The CDAC of bergamot FPJ (39 mmol e

Topics: Antioxidants; Ascorbic Acid; Biphenyl Compounds; Carotenoids; Chlorambucil; Citrus; Docosahexaenoic Acids; Flavonoids; Fruit; Oils, Volatile; Plant Extracts

Developing functional foods by utilizing plants can often lead to compromised sensory properties. Thus this study investigates the combination of plants to produce synergistic effects and to incorporate these plant powders into a pasta formulation without affecting its sensory acceptance. Six common Brunei medicinal plants were evaluated for their in vitro antioxidant activity determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity (IC. Fortification of pasta with the plant powder blends resulted a significant increase in DPPH antioxidant activity, while successfully maintaining indistinguishable features from the control pasta, including minimal cooking loss, agreeable measure of cohesiveness, springiness and chewiness, with good overall sensory acceptability. © 2022 Society of Chemical Industry.

Topics: Amaranthus; Antioxidants; Ascorbic Acid; Brunei; Gallic Acid; Plant Extracts; Plants, Medicinal; Powders; Triticum

Background Commelina benghalensis Linn. (Family: Commelinaceae) is a common weed available in Bangladesh with several uses in traditional medicine. However, the chemical profile of this medicinal plant is scarce in relation to its medicinal uses. The aerial parts of this plant have been investigated for the isolation of secondary metabolites and evaluation of the biological activities. Methods Major phytochemical groups were analyzed using chromogenic reagents, whereas n-hexane soluble fractionates of the methanol extract were subjected to 1H nuclear magnetic resonance (NMR) spectroscopic analysis. The antioxidant property of the obtained compounds was evaluated using 1,1-diphenyl-2-picryl-hydrazyl (DPPH). Results Dammara-12-en-3-one (CB-1), stigmasterol (CB-2) and 3 (2,3,4,5,6-pentahydroxy)-cinnamoyl dammara-12-ene (CB-3) were isolated from the n-hexane fractionate of methanol extract of C. benghalensis. In the study of DPPH radical scavenging activity, IC50 values were predicted to be 790.18, 4186.94 and 2001.16 μg/mL for CB-1, CB-2 and CB-3, respectively, whereas standard ascorbic acid showed IC50 at 1.26 μg/mL. Conclusions Two new dammarane-type triterpene (CB-1 and CB-3) and one phytosterol (CB-2) were identified in C. benghalensis with mild antioxidant property.

Topics: Antioxidants; Ascorbic Acid; Biphenyl Compounds; Commelina; Dammaranes; Hexanes; Phytochemicals; Phytosterols; Plant Extracts; Plants, Medicinal; Terpenes; Triterpenes

Barley sprouts and wheat sprouts have received much interest as functional foods in many countries. In this study, the effects of heat processing and extraction temperature on the bioactive components and antioxidative properties were examined in barley and wheat sprout teas. Both barley and wheat sprout teas were processed with two different methods (steaming or pan-roasting). Crude protein was increased, and moisture content was the lowest, in the roasted barley and wheat sprout teas. Total phenolics content and flavonoid contents were significantly higher in the roasted teas than in the steamed teas. Vitamin C content was the highest after an extraction temperature of 55 °C (24.05 mg/mL) in the roasted wheat sprout tea. Both roasted barley and wheat sprout teas exhibited the most antioxidative effects in vitro, demonstrated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging and nitrite-scavenging activities. Therefore, the roasting method can be considered an appropriate technique for the production of barley and wheat sprout teas. PRACTICAL APPLICATION: Barley and wheat sprouts have received much attention in recent years as functional food materials in many countries and can be consumed as a form of tea. Heat processing methods such as steaming and roasting were applied and compared to increase the bioactive components and antioxidative activity in barley and wheat sprout teas. We found that roasting showed higher bioactive components and antioxidative activity than steaming in both barley and wheat sprout teas. In addition, wheat sprouts tea showed better bioactive components and antioxidative activity compared with the barley sprout tea.

Topics: Antioxidants; Ascorbic Acid; Beverages; Biphenyl Compounds; Cooking; Flavonoids; Hordeum; Hot Temperature; Humans; Phenols; Picrates; Plant Extracts; Seedlings; Tea; Triticum

The effects of dietary exposure to sodium L-ascorbate (Na-AsA), butylated hydroxyanisole (BHA), and diphenyl on the development of urinary bladder tumors in a mouse two-stage carcinogenesis model were examined. Male B6C3F1 mice received 0.05% N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN) in the drinking water for 4 weeks and were then treated with 5% Na-AsA, 1% BHA, or 1% diphenyl for 32 weeks. None of these chemicals enhanced the development of either preneoplastic or neoplastic lesions in the urinary bladder. Furthermore, DNA synthesis levels of urinary bladder epithelium in mice treated with each substance alone for 8 weeks were not elevated significantly, although Na-AsA was associated with a significant increase in the urinary pH value and Na+ concentration. The results indicate that Na-AsA, BHA, and diphenyl do not exert an enhancing influence on mouse bladder carcinogenesis, in clear contrast to the case in the rat.

Topics: Animals; Ascorbic Acid; Biphenyl Compounds; Butylated Hydroxyanisole; Butylhydroxybutylnitrosamine; Carcinogens; Male; Mice; Rats; Urinary Bladder Neoplasms

Topics: Ascorbic Acid; Biphenyl Compounds; Coloring Agents; Hemoglobins; Humans; Iron; Phenylenediamines; Vitamin E; Vitamins