Utilization of Jujube Fruit (Ziziphus mauritianaLam.) Extracts as Natural Antioxidants in Stability of Frying Oil

Abstract

13The effects of ultrasound-assisted, supercritical CO 2 and solvent extraction methods on 14 antioxidant activity of Ziziphus mauritiana (Lam.) extracts investigated using DPPH and β-15 carotene assays. Ethanol-water extract of jujube obtained with ultrasound-assisted extraction 16 (UJEW) had the highest antioxidant activity. Ultrasound-assisted extraction was the most 17 effective method on extraction of phenolic compounds. Effect of UJEW in stability of soybean 18 oil was compared to synthetic antioxidants by measuring total polar compounds, carbonyl value, 19 peroxide value, free fatty acids, oxidative stability index, conjugated dienes and trienes values. 20Results showed UJEW at 600 ppm had higher stabilization efficiency than commercial 21 antioxidants BHA, BHT and TBHQ. 22 Downloaded by [FU Berlin] at 11:54 02 July 2015 A c c e p t e d M a n u s c r i p t 2

Antioxidant, antimicrobial, and cytotoxic activities of extracts from the seed and pulp of Jujube (Ziziphus jujuba) grown in Iran

“…OSI results were in agreement with results reported by Delfanian et al. (2016). The values of IP measured at 110°C showed that jujube pulp oil (3.70 hr) was more stable than jujube seed oil (3.65 hr) ( p < .05).…”

“…The oxidative stability was expressed as the induction period (hr) of each oil sample corresponding to the time. Samples were analyzed simultaneously in triplicate (Delfanian et al., 2016; Habibi‐Nodeh et al., 2019; Salarbashi et al., 2014).…”

Geographic Variation in the Chemical Composition and Antioxidant Properties of Phenolic Compounds from Cyclocarya paliurus (Batal) Iljinskaja Leaves

“…It is well known that excess reactive oxygen species (ROS) can lead to so-called oxidative stress in the human body, which is a major cause of aging and disease [ 1 ]. Treatments with synthetic antioxidants often have toxic or side effects [ 2 ].…”

“…Treatments with synthetic antioxidants often have toxic or side effects [ 2 ]. Hence, attention in recent years has focused on screening natural antioxidants from plants, as they can help maintain the biological balance between oxidation and antioxidation [ 1 ]. Polyphenols, a large category of secondary plant metabolites, have been widely studied for their biological functions in combating chronic disease due to their high antioxidant activities [ 3 , 4 , 5 ].…”

Composition and shear crystallization of milkfat fractions extracted with supercritical carbon dioxide

“…It has been used for the extraction and fractionation of lipid-bearing materials, [10,11] decaffeination, [12] and the extraction of cholesterol, [13] aromas, [14] and antioxidants from fats and oils. [15][16][17] Several studies on milkfat fractionation with SC-CO 2 have been reported with the fractions obtained consisting of markedly different physical properties and compositions. [5,18,19] For example, Chen et al [20] fractionated milkfat into low, intermediate, and high-melting fractions using different extraction pressures.…”