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,...

In this study, it was investigated the total amounts of phenolic and flavonoid substances antioxidant activities in different solvent extracts Lonicera iberica M. Bieb. wild fruit. Total contents were determined as equivalent to gallic acid using Folin-Ciocalteu reagent, quercetin by aluminium nitrate method. addition, properties free radical scavenging (DPPH) reducing power (FRAP) methods. The...

In the present study, levels of Total Phenols compounds (TPC) and antioxidant capacity different extracts from leaves Cassytha filiformis (C. filiformis), Commiphora schlechteri schlechterii), Ochna natalitias (O. natalitia) Pavetta assimilis (P. assimilis) were evaluated by Folin-Ciocalteu ferric ion reduction methods, respectively. The prepared with solvents polarities (n-hexane, dichlorometh...

Summary Introduction: There is a high interest in creating medicines, dietary supplements, cosmetics including plant extract with antioxidant activity. For understanding whether has maximum level of activity it important to know the total raw material. Objective: The main goal study was find out green tea leaves Methods: measured by potentiometric method. Total phenolic, flavonoids, catechins a...

Objetivo: evaluar la actividad antioxidante y antiinflamatoria en extractos hidroalcohólicos de las partes aéreas Kalanchoe daigremontiana Raym. -Hamet & H. Perrier. Materiales métodos: se obtuvieron utilizando como solventes etanol (EtOH) metanol (MeOH) diferentes concentraciones. Los fenoles totales los flavonoides cuantificaron con el método Folin Ciocalteu complejación aluminio respecti...

The He-Ne laser (632.8 nm) and photoacoustic spectroscopy (PAS), a variant of the photothermal methods, were combined with Folin-Ciocalteu colorimetry method to determine total phenolics in wine lees. Utilising this we found that polyphenol content nine selected lees varied from 1305 3907 mg/L. gallic acid equivalent was determined by means spectrophotometry using 765 nm as analytical wavelengt...


 Komparasi dua alat Spektrofotometer dengan merk dan tahun pemakaian yang berbeda diperlukan untuk mengetahui unjuk kerja alat. Pengujian dilakukan pada penentuan kandungan fenolik total (TPC) metode Folin-Ciocalteu. Hasil analisa TPC dari spektrofotometer kemudian dikomparasi menggunakan uji paired t-test. Uji t- test merupakan membandingkan rata-rata hasil pengujian kedua tersebut. dika...

Daun sungkai (Peronema canescens Jack) memiliki aktivitas dan kandungan antioksidan yang kuat terkait dengan kadar fenol flavonoid, namun pada kulit batang penelitian masih terbatas. Kandungan flavonoid di dalam diharapkan dapat menjadi sumber alam pengembangan obat sintesis suplemen. Penelitian ini bertujuan untuk menganalisis metabolit sekunder menetapkan sungkai. Metode mengekstrak telah dir...

Lippia graveolens is one of the most important aromatic species in Mexico due to antioxidant and antibiotic activities reported its essential oil. The aim this work was assess effect irrigation with aquaculture wastewater salicylic acid addition on production phenolic compounds L. graveolens. plants (14) were irrigated using Steiner solution for 28 days; at same time, exogenously applied 0.0 (c...

In traditional medicine, Annnickia chlorantha (Annonaceae)is used in many parts of Africa to treat several pathologies. It is for the management stomach problems, treatment jaundice, tuberculosis, urinary tract infections, malaria, hepatitis and ulcers forms, gallstones or even diarrhea. The phytochemical analysis determination antiradical activity methanolic extract trunk bark from Annickia Ga...