Results 21 to 30 of about 160,911 (301)

Aktivitas Penangkapan Radikal Bebas DPPH dan Daya Reduksi Ekstrak Gracilaria verrucosa

open access: yesJRST: Jurnal Riset Sains dan Teknologi, 2020
Gracilaria verrucosa adalah salah satu jenis rumput laut merah yang memiliki kandungan bioaktif untuk antioksidan alami. Penelitian ini bertujuan untuk mengetahui aktivitas antioksidan yang terkandung di dalam Gracilaria verrucosa dengan menggunakan dua ...
Anggi Setiabudi   +2 more
doaj   +1 more source

Phytochemical constituents of Centotheca lappacea (L.) Desv. determined with online DPPH assay coupled to LC-ESI-QTOF-MS and headspace GC-MS [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
Centotheca lappacea (L.) Desv. or “hee yum” grass has been used in Thailand for postpartum care. This study focused on analyses of elements, antioxidants and volatile compounds from C. lappacea.
Genet Minale   +7 more
doaj   +1 more source

Plant elicitation with salicylic acid increases bioactive compounds content and antioxidant activity in the infusion of Achillea millefolium L.

open access: yesBioscience Journal, 2019
This study evaluated the total polyphenols content and the antioxidant activity of the infusion prepared with leaves from Achillea millefolium L. plants treated with salicylic acid (SA).
Pedro Henrique Gorni   +5 more
doaj   +1 more source

Paramagnetic Susceptibilities of Some DPPH Derivatives [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1969
Abstract The static magnetic susceptibilities of poly crystalline samples of 1,1-bis(p-chlorophenyl)-2-picrylhydrazyl (Cl-DPPH), 1,1-bis(p-bromophenyl)-2-picrylhydrazyl (Br-DPPH), and 1,1-bis (p-methoxyphenyl)-2-picrylhydrazyl (CH3O-DPPH) were measured in the temperature range from 10°K to 300°K.
Noriko Ohigashi, Hiroo Inokuchi
openaire   +1 more source

AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL, ETIL ASETAT, DAN n-HEKSANA BATANG TURI PUTIH (Sesbania grandiflora (L.) Pers.) DENGAN METODE DPPH (1,1-Diphenyl-2-picrylhydrazyl)

open access: yesJurnal Kimia Riset, 2020
Turi (Sesbania grandiflora (L.) Pers.) merupakan jenis tanaman yang tersebar luas di wilayah Indonesia dan termasuk dalam famili Fabaceae serta memiliki potensi sebagai antioksidan alami.
Jamilatur Rohmah   +6 more
doaj   +1 more source

Antioxidant Activity and Essential Amino acid Content of Bread Wheat (Triticum aestivum L.) Varieties

open access: yesJournal of Agricultural Sciences, 2023
In recent years, consumption of healthy and nutritious products has come to the forefront with the increased consumers’ awareness because of sensitivity to human health.
Osman Erekul, Ali Yiğit
doaj   +1 more source

Antioxidant assays - consistent findings from FRAP and ORAC reveal a negative impact of organic cultivation on antioxidant potential in spinach but not watercress or rocket leaves [PDF]

open access: yes, 2013
Watercress (Rorippa nasturtium-aquaticum), wild rocket (Diplotaxis tenuifolia), and spinach (Spinacia oleracea) are commercial crops reported to have high concentrations of antioxidants, possibly contributing to disease prevention following human ...
Mazzer, Alice   +5 more
core   +1 more source

ALPHA-MANGOSTIN QUALITY AND QUANTITY ANALYSIS IN NAKHON SI THAMMARAT MANGOSTEEN PERICARP USING THIN-LAYER CHROMATOGRAPHY [PDF]

open access: yesMalaysian Journal of Sustainable Agriculture, 2022
TLC (thin-layer chromatography) is a standard technique for simultaneously screening and monitoring chemical character in a large number of samples.
Siriluk Sintupachee   +2 more
doaj   +1 more source

Antioksidativna aktivnost sjemenki lubenice određena DPPH testom [PDF]

open access: yes, 2022
The purpose of this study was to assess the antioxidant activity of the fresh extracts of Croatian and Greek watermelon seeds. Samples were prepared using two extraction methods: Soxhlet and maceration.
Salihović, Mirsada   +2 more
core   +1 more source

In vitro and molecular docking and analysis of isoxazoline derivatives with DPPH [PDF]

open access: yesBioinformation, 2020
A series of isoxazoline derivatives (4a-i) was synthesized from the reaction of 3-(4-fluorophenyl)-1-phenylprop-2-en-1-one derivatives (4a-i) and hydroxylamine hydrochloride in ethanol at reflux conditions. The compounds were confirmed by spectral (IR, 1H & 13C NMR) and elemental analysis.
Geetha, C, Rajakumar, PR
openaire   +2 more sources

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