The Effect of Extraction Parameters on Antioxidant Activity of Subcritical Water Extracts Obtained From Mandarin Peel

Kanmaz, Evrim Özkaynak; Saral, Özlem

doi:10.15237/gida.gd16073

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Temperature had a similar impact on the antioxidant activity; therefore, the antioxidant activity was increased with the increase of temperature, which was reported in various studies [20,21,41]. The antioxidant activity of comfrey root extracts significantly increased with the increase in extraction temperatures from 120 to 200 • C, which correlated positively with the content of polyphenols [21].…”

Section: Determination Of Antioxidant Activitysupporting

confidence: 74%

Valorization of Yarrow (Achillea millefolium L.) By-Product through Application of Subcritical Water Extraction

et al. 2020

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In the present study, valorization of yarrow (Achillea millefolium) by-product from the filter tea industry was investigated through the application of subcritical water for the extraction of bioactive compounds. The influence of different process parameters (temperature 120–200 °C, extraction time 10–30 min, and HCl concentration in extraction solvent 0–1.5%) on extract quality in terms of content of bioactive compounds and antioxidant activity was investigated. Optimal conditions of the extraction process (temperature 198 °C, extraction time 16.5 min, and without acidifer) were determined and, when applied, the most efficient exploitation of by-products is achieved, that is, attainment of extracts rich in total phenols and flavonoids and high antioxidant activity. In addition, by applying the high performance liquid chromatographic analysis, the content of chlorogenic acid was determined as well as the hydroxymethylfurfural content in obtained extracts. The results demonstrated that subcritical water can be successfully used for utilization of yarrow by-products for obtaining extracts rich in antioxidants.

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Section: Determination Of Antioxidant Activitysupporting

confidence: 74%

Valorization of Yarrow (Achillea millefolium L.) By-Product through Application of Subcritical Water Extraction

et al. 2020

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Bioactive compounds of sweet and sour cherry stems obtained by subcritical water extraction

Švarc‐Gajić

Cerdà

Clavijo

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Sweet cherries (Prunus avium L.) and sour cherries (Prunus cerasus L.) contain substantial amounts of anthocyanins and polyphenolics, and their stems have been used in traditional medicine for centuries. However, comparative data on the composition of sweet and sour cherry stems using the same analytical methodologies are limited. Moreover, there is no data in terms of biological activity of subcritical water extracts of cherry stems. RESULTS AND DISSCUSION Results obtained by using several assays that focused on different mechanisms showed that subcritical water extracts of sour and sweet cherry stems were powerful antiradicals and antioxidants. Anti‐proliferative properties measured by MTT (3‐[4,5‐ dimethylthiazol‐2‐yl]‐2,5 diphenyl tetrazolium bromide) test showed prominent cytotoxicity against different tumor cell lines. Inhibitory concentrations obtained were in the range 8.38–11.40 µg mL‐1. GC–MS (gas chromatography mass spectrometry) analysis showed the presence of alcohols, fatty acids, organic acids and other organic compounds. However, the chemical compositions of the two samples observed were similar, indicating similar chemical composition of sour and sweet cherry stems. CONCLUSION Subcritical water extracts of cherry stem demonstrated excellent biological activity and the potential to be used for pharmaceuticals or supplements due to confirmed high antioxidant, antiradical and antitumor activity. © 2017 Society of Chemical Industry

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Process for production of ready to drink iced teas from sage (Salvia officinalis L.) and linden (Tilia cordata): pressurized hot water extraction and spray drying

Alaşalvar

Çam

2018

Food Sci Biotechnol

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The aim of this study was to produce ready to drink (RTD) iced teas from sage and linden. For this purpose, phenolics of sage and linden were extracted by pressurized hot water extraction (PHWE) and then the extracts obtained were spray dried by the addition of maltodextrin. The powders produced by spray drying were processed into RTD sage and linden iced teas by adding sucrose and citric acid. The optimum conditions of PHWE of sage and linden were at 160°C and for 10 min and 5 min, respectively. The solubility and microencapsulation efficiency of spray dried powders were found to be greater than 97%. In addition, total phenolic content and antioxidant activity of RTD iced teas are parallel with those of microencapsulated sage and linden powders after pasteurization at 80°C for 5 min. The sensory analysis of RTD iced teas showed that products were well-accepted by the panelists.

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The Effect of Extraction Parameters on Antioxidant Activity of Subcritical Water Extracts Obtained From Mandarin Peel

Cited by 3 publications

References 22 publications

Valorization of Yarrow (Achillea millefolium L.) By-Product through Application of Subcritical Water Extraction

Valorization of Yarrow (Achillea millefolium L.) By-Product through Application of Subcritical Water Extraction

Bioactive compounds of sweet and sour cherry stems obtained by subcritical water extraction

Process for production of ready to drink iced teas from sage (Salvia officinalis L.) and linden (Tilia cordata): pressurized hot water extraction and spray drying

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