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Comparison of sanitizing disinfectants on the physicochemical and microbial properties of onion puree (OP) CIGR Journal
Azarpazhooh, Elham; Sharayei, Parvin.
There is a growing demand for fresh cut, value-added and ready-to-use food in households, as well as for widespread use in retail, food services and the various food industries. Amongst vegetables, onions have many medicinal properties and can lead to health.This study evaluated the effect of disinfection methods including; T1: Nisin & Citric acid (N+C), T2: Sodium hypochlorite (SH+S+C), T3: Calcium chloride+ Ascorbic acid+ Citric Acid (CC+AS+CA);T4: Control,during 21 days storage at 4°C on onion pure (OP). Each week, pH, soluble solids, acidity, weight loss, total phenolic compounds antioxidant activity and microbial tests (total microbial count, total molds and yeasts) were performed on the samples. Statistical analysis of the data by way of a...
Tipo: Info:eu-repo/semantics/article
Ano: 2021 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6729
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Optimization of the pulsed electric field -assisted extraction of functional compounds from Nepeta binaludensis CIGR Journal
Azimi Mahalleh, Afsaneh; Sharayei, Parvin; Mortazavi, Seyed Ali; Azarpazhooh, Elham; Niazmand, Razieh.
Pulsed electric field (PEF) treatment was used for extracting effective components from Nepeta (Nepeta binaludensis Jamzad). A response surface method was used to investigate the effects of independent process variables (voltage of pulsed electric field (VPEF): 2, 4 and 6 KV/cm and number of pulsed electric field (NPEF): 20, 40 and 60 n) on the yield (Y) and antioxidant characteristics: total phenolic compounds (TPC), 1,1- diphenyl -2- picrylhydrazyl free radical scavenging (DPPHsc), ferric reducing-antioxidant power (FRAP), half  maximal of radical-scavenging activity (IC50) of Nepeta extract (aerial parts). According to Derringer’s desired function approach, the optimal conditions based on both individual and combinations of all process variables were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic compounds; Nepeta binaludensis; Response Surface Methodology; Pulsed electric field; Antimicrobial activity.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5391
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Optimization of the pulsed electric field -assisted extraction of functional compounds from Nepeta binaludensis CIGR Journal
Azimi Mahalleh, Afsaneh; Sharayei, Parvin; Mortazavi, Seyed Ali; Azarpazhooh, Elham; Niazmand, Razieh.
Pulsed electric field (PEF) treatment was used for extracting effective components from Nepeta (Nepeta binaludensis Jamzad). A response surface method was used to investigate the effects of independent process variables (voltage of pulsed electric field (VPEF): 2, 4 and 6 KV/cm and number of pulsed electric field (NPEF): 20, 40 and 60 n) on the yield (Y) and antioxidant characteristics: total phenolic compounds (TPC), 1,1- diphenyl -2- picrylhydrazyl free radical scavenging (DPPHsc), ferric reducing-antioxidant power (FRAP), half  maximal of radical-scavenging activity (IC50) of Nepeta extract (aerial parts). According to Derringer’s desired function approach, the optimal conditions based on both individual and combinations of all process variables were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenolic compounds; Nepeta binaludensis; Response Surface Methodology; Pulsed electric field; Antimicrobial activity.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5391
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Optimization of ultrasound-assisted osmotic treatment of Aleo vera gel impregnated with grape pomace phenolic compounds using response surface methodology CIGR Journal
Azarpazhooh, Elham; Sharayei, Parvin; Ramaswamy, Hosahalli S..
This study was focused on investigating the use of pulsed ultrasound-assisted osmotic dehydration (UAOD) for enhancing the infusion of phenolic compounds extracted from grape pomace (GPx) to Aloe vera (Aloe barbadensis Miller,) gel (AVG) using response surface methodology (RSM) and produce a dehydrated product with high antioxidant content. Fresh AVG were initially immersed in a sucrose solution of 50° B with three levels of GPx (10, 20, and 30 v/v) and subjected to pulsed ultrasound (US) treatment with a probe of 2 cm diameter, two levels of ultrasound amplitude (UA) (50 and 100%), and three ultrasound treatment times (UT) (30, 135 and 210 min). The pulsed on and off times were set at 15 and 1 min, respectively. A multiple regression analysis was carried...
Tipo: Info:eu-repo/semantics/article
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5602
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Effect of drying temperature, airflow rate and flower types on dried saffron flower quality CIGR Journal
Saeidirad, Mohammad Hossein; Sharayei, Parvin; Zarifneshat, Saeed.
The separating of saffron stigma from fresh flowers is the most important and the most difficult step of saffron harvesting. The separating of saffron stigma is done with the hand labor, and it have time-consuming and costly. The saffron flowers will be decay if separating of saffron stigma is not done quickly.  Drying is one method of keeping saffron. The dried saffron flowers have the higher shelf life, and there have more time for separating of stigma. The main object of this study was to determine the best saffron flower drying method. Therefore, the effect of variables including drying temperature in three levels (40, 50 and 60 °C), airflow rate in two levels (0.5 and 1 m/s) and three levels of flowers (buds, semi opened and fully opened) were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saffron Flower; Drying; Saffronal.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2758
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