This research was undertaken to investigate the influence of extraction parameters during microwave-assisted extraction on total phenolic content, total flavonoids, total hydroxycinnamic acids and total flavonols of blackthorn flowers as well as to evaluate the antioxidant capacity by two different methods (2,2-diphenyl-1-picrylhydrazyl free radical scavenging capacity and ferric reducing antio...

Melanin is a natural pigment that plays an important role in the protection of skin, however, hyperpigmentation cause by excessive levels of melatonin is associated with several problems. Therefore, melanogenesis inhibitory natural products have been developed by the cosmetic industry as skin medications. The leaves of Morus alba (Moraceae) have been reported to inhibit melanogenesis, therefore...

Bauhinia purpurea is a flowering plant. General phytochemical screening of the aerial parts of Bauhinia purpurea revealed the presence of steroids, terpenes, phenolic compounds, saponins, fatty acids, alkaloids. The aim of this study is to identify and characterize the bioactive principle from the aerial parts of the plant. It has wide folk medicinal use. For isolation of the compound, the drie...

2D-TLC and RP-HPLC methods were applied to qualitatively determinate free phenolic acids and those liberated by acid and alkaline hydrolysis in the flowers and leaves of G. robusta and G. squarrosa. The presence of eleven phenolic acids, namely: caffeic, chlorogenic, p-coumaric, p-hydroxybenzoic, ferulic, gallic, protocatechuic, vanillic salicylic, p-hydroxyphenylacetic and ellagic acids was de...

The present study determined the phenolic and flavonoid contents in Amomum chinense C. leaf extracts obtained using four extracting solvents(distilled water, 80% methanol, 80% ethanol and 80% acetone)with various extraction times (6h, 12h and 24h) at 37oC. All extraction conditions significantly (p <0.05) affected the phenolic contents and antioxidant activity of the leaf extracts. The optimal ...

background: olive oil wastewater  contains chemical contents and organic materials that are resistant to biodegradation.  the existence of phenolic inhibitor compounds, toxicity to microorganisms in wastewater treatment units, unpleasant odor, high biochemical oxygen demand (bod) and chemical oxygen demand (cod), high suspended solids, and compounds resistant to biodegradation in such wastewate...

This study was performed to evaluate the in vitro antimicrobial and antioxidant activities and the phenolic profile of Eucalytus globulus Labill. and Corymbia ficifolia (F. Muell.) K.D. Hill & L.A.S. Johnson leaves. Both leave extracts contain significant amounts of phenolic compounds, mainly flavonoids. Qualitative and quantitative analyses of the phenolic compounds were performed using a HPLC...

Background & Aim: Nowdays consumers prefer to eat healthier foods, therefore producers and researchers are involved to improve the variety, quality, taste of food products. Lemon balm is a perennial, aromatic, herb that contains many phenolic compounds. In this research the effect of additing lemon balm powder (by reducing of wheat flour in formulation, instead) on qualities of sponge cakes wer...

Phenylalanine ammonia-lyase (PAL) performs a major role in the biosynthesis of polyphenolic compounds, which are involved in the defense mechanism in harsh environments related to different stimuli. The present study was carried out to detect the activity of phenylalanine ammonia-lyase in different plant parts of Anacardium occidentale such as flower, young leaves, shoot tip, mature leaves, raw...

Crocus sativus L. is one of the world’s most famous saffron production crops and its enormous by-products, such as leaves, are an excellent source bioactive compounds with potential nutritional applications. The total phenolic content leaves was 5.44 ± 0.01 mg GAE/g, flavonoid 2.63 0.05 RE/g, respectively. main in polyphenols, flavonoids by HPLC carboxylic acids, amino were also identified GC-M...