Daun durian mengandung senyawa fenolik yang berpotensi sebagai antioksidan. Penelitian ini bertujuan untuk membandingkan aktivitas antioksidan ekstrak daun muda dan tua kadar fenol total flavonoid durian. Ekstraksi dilakukan secara maserasi dengan pelarut etanol 70%. Ekstrak diuji antioksidannya terhadap radikal DPPH mengukur absorbansi spektrofotometer UV-Vis, kemudian dihitung persen peredama...

Origanum vulgare L., the most complex and variable species of genus Origanum, is used to cure various diseases in traditional medicinal system. In current investigation, O. was collected from its natural origin further multiplied for two years at experimental farm DIBER field station, Auli, afterwards, it grown three different altitudes, i.e., station Auli (2744 m), Pithoragarh (1524 Haldwani (...

This study evaluated the chemical profile and antimicrobial activity of essential oil (EO) P. dioica. The EOs were extracted by hydrodistillation chemically characterized gas chromatography coupled to mass spectrometry (GC/MS). total phenolics quantified Folin Ciocalteu method. For assay, Disc Diffusion Broth Dilution method applied obtain minimum inhibitory concentration bactericidal concentra...

Limonium brasiliense is a common plant on the southern coast of Brazil. The roots are traditionally used for treatment of premenstrual syndrome, menstrual disturbances and genito-urinary infections. Pharmaceutical preparations obtained from its roots and used for these purposes were marketed in Brazil in the 1980s and 1990s. Currently, the Brazilian Drug Agency (National Health Surveillance Age...

Two spectrophotometric methods are proposed for the assay of oxcarbazepine (OXC) in bulk and dosage forms using Folin-Ciocalteu phenol reagent (FCP) and 3-methyl-2-benzothiazolinone hydrazine hydrochloride (MBTH) as reagents. The first method involves addition of FCP reagent to OXC in alkaline medium followed by measurement of absorbance at 760 nm (method A), and the other involves addition of ...

Etlingera elatior, Persicaria odorata, Centella asiatica, Senna alata and Phyllanthus emblica were reviewed for their in vitro anti-collagenase activity its total phenolic contents. Plant herbs play a vital role to promote the production of collagen which is component skin. Different solvents during plant extraction various parts used determine properties content. Generally, assay Folin-Ciocalt...

A study of the chemical composition essential oil obtained from aerial parts Salvia verticillata L., growing in Georgia, was carried out. The percentage dominant components determined by internal integration, component leaves is caryophyllene (10.15 %), spathulenol (9.8 valeranone (11.9 and flowers, germacrene D (17.2 (9.43 %). ratio terpene compounds flowers oxygenated sesquiterpenes are 38.43...

The aim of this study was to investigate the effect coffee roasting process on both toxic and some beneficial antioxidant compounds, applying a systematic broad approach. Arabica Robusta green beans were roasted in lab-scale roaster for different times order achieve five degrees (from light dark) assess evolution acrylamide (AA), trigonelline, nicotinic acid caffeoylquinic acids contents (deter...

The objective of the research was to evaluate antioxidant activity, phenols and volatile compounds different types coffee infusions. We worked with Catimor variety used five methods obtain infusion (espresso, V60, siphon, French press a traditional local method). For each infusion, capacity determined 2,2-Diphenyl-1-Picrylhydrazyl 2,2′-azinobis-3-ethylbenzothiazoline-6-sulfonic acid techniques,...

Golongan senyawa fenol dan flavonoid pada umbi ubi jalar ungu-ungu merupakan kontributor utama aktivitas antioksidan. Penelitian dilakukan untuk mengetahui pengaruh bobot jenis terhadap kandungan total ekstrak etil asetat ungu-ungu. diawali dengan pengumpulan pembuatan simplisia ungu-ungu, bagian kulit luar berwarna ungu, dalam ungu. Simplisia diekstraksi pelarut menggunakan metode refluks titi...