نتایج جستجو برای: rancimat

تعداد نتایج: 137  

Journal: :Journal of Food Quality 2023

Oxidative stability of chia seed oil enriched with oregano (Origanum vulgare L.) and yarrow (Achillea millefolium) extracts at different concentrations (600, 1200, 1800 ppm) was evaluated under accelerated oxidation conditions for 5 days. The total phenolic compounds antioxidant activity extract were higher than the extract. With decreasing increasing time, oxidative decreased significantly ( <...

Journal: :Italian Journal of Food Science 2021

This study aimed to evaluate the influence of Capsicum baccatum L. Aji Angelo and Bishop crown cultivars quality parameters flavoured olive oils (FOOs) obtained by addition both fresh dried pepper powders (1%) Dolce di Rossano Roggianella monovarietal extra virgin (EVOOs). First, extracts were investigated for their total phenolic, flavonoid, carotenoid content as well phenolic acids, fatty aci...

Journal: :Oilseeds and fats, crops and lipids 2022

Coratina is a very popular olive cultivar, native of the Apulian region (Italy), but today worldwide cultivated and appreciated. In present study, durability monovarietal extra virgin oils (CMOO), produced in Molise (Southern Italy), was investigated up to 6-years storage metal tin cans, under room temperature darkness. Durability considered time which an oil remained food grade. Yearly, free f...

Journal: :Journal of Food Quality 2023

The present study aimed to evaluate the changes in extra virgin olive oil (EVOO) after enrichment treatments with Thymus leptobotrys, a Moroccan endemic aromatic plant. EVOO sample was supplemented two materials obtained from aerial parts of T. leptobotrys: powder (2.5 and 5%) or essential (100 200 ppm). chemical composition analysis leptobotrys extracts (essential methanolic extract) allowed d...

Journal: :Europan journal of science and technology 2023

In this study, the essential oil chemical compounds of rosemary (Rosmarinus officinalis L.) and its antioxidant activity on oxidation stability refined sunflower (RSO) were investigated by Rancimat method. The plant material was obtained from Afyonkarahisar Medicinal Aromatic Plants Center/Turkey. Based GC/FID-MS analysis result, 1,8-Cineole (15.18%), Camphor (11.39%), Borneol Germacrene D (11....

Journal: :Blucher Engineering Proceedings 2022

Os combustíveis fósseis são precursores de uma grande parcela das emissões gases poluentes na atmosfera. Desse modo, existe demanda crescente por fontes energéticas renováveis e menos poluentes. O biodiesel representa alternativa promissora à diversificação matrizes brasiliera mundial bem como para a redução dos impactos ambientais motores combustão interna. Entretanto, o uso do biocombustível ...

Journal: :Italian Journal of Food Science 2021

In order to optimize the screw-press extraction conditions of oil from goldenberry (Physalis peruviana L.) seeds obtained nectar processing waste, a face centered design was applied. The extracted at different temperatures (60, 80, and 100°C) seed moisture contents (8, 10, 12%). Oil recovery (OR) increased residual in cake decreased significantly as content temperature were reduced; volatile ma...

2017
Charalampos Proestos Theo Varzakas

The antioxidant properties and polyphenol content of some selected aromatic plants grown in Greece were studied. Plants were refluxed with 60% methanol after acid hydrolysis. The phenolic substances were quantified by High Performance Liquid Chromatography-Diode Array Detector (HPLC-DAD). The antioxidant capacity of the extracts was determined with the Rancimat test using sunflower oil as subst...

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