scholarly journals Evaluation of antioxidant activity of loquat fruit (Eriobotrya japonica lindl.) skin and the feasibility of their application to improve the oxidative stability of soybean oil

2016 ◽  
Vol 53 (5) ◽  
pp. 2244-2252 ◽  
Author(s):  
Mojtaba Delfanian ◽  
Reza Esmaeilzadeh Kenari ◽  
Mohammad Ali Sahari
Keyword(s):  
Antioxidant Activity ◽  
Soybean Oil ◽  
Oxidative Stability ◽  
Eriobotrya Japonica

scholarly journals Oxidative stability of UV irradiated and X-rayed soybean oil incorporated with rose oil

2019 ◽  
Vol 70 (1) ◽  
pp. 286 ◽  
Author(s):  
M. T. Golmakani ◽  
S. Barani ◽  
N. Alavi ◽  
Z. Tahsiri
Keyword(s):  
Antioxidant Activity ◽  
Soybean Oil ◽  
Oxidative Stability ◽  
Uv Radiation ◽  
Oxidation Process ◽  
Energy Content ◽  
Oxidation Products ◽  
X Ray ◽  
Accelerated Storage ◽  
Rose Oil

The effects of UV radiation and X-ray on the oxidative stability of soybean oil were investigated. Also, rose oil was incorporated into soybean oil and its antioxidant activity was compared with that of α-tocopherol during accelerated storage. Treating the samples with radiation (UV and X-ray) stimulated the oxidation process in soybean oil in comparison with samples that did not receive radiation. X-rayed samples had significantly higher amounts of oxidation products than UV irradiated samples. The X-ray caused more oxidation in the samples due to its higher energy content. Also, the antioxidant activity of rose oil was comparable with that of α-tocopherol.

scholarly journals Effect of Ultrasound-Treated Arabinoxylans on the Oxidative Stability of Soybean Oil

Antioxidants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 147 ◽  
Author(s):  
Mayra A. Mendez-Encinas ◽  
Elizabeth Carvajal-Millan ◽  
Jesús Ortega-García ◽  
Lubitza B. Santiago-Gómez ◽  
Yubia De Anda-Flores ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Soybean Oil ◽  
Oxidative Stability ◽  
Antioxidant Capacity ◽  
Ultrasonic Treatment ◽  
Potential Application ◽  
Average Molecular Weight ◽  
Natural Antioxidant ◽  
Attractive Alternative ◽  
Dpph Method

Arabinoxylans (AX) are polysaccharides with antioxidant activity and emulsifying properties, which make them an attractive alternative for its potential application as a natural antioxidant in oils. Therefore, this work aimed to investigate the effect of ultrasonic treatment of AX on their antioxidant capacity and its ability to improve the oxidative stability of soybean oil. For this purpose, AX were exposed to ultrasonic treatment at 25% (100 W, AX-1) and 50% (200 W, AX-2) power and an operating frequency of 20 KHz during 15 min, and their macromolecular properties (weight average molecular weight (Mw), polydispersity index and intrinsic viscosity) were evaluated. The antioxidant capacity of AX was determined by the DPPH assay and Rancimat test. Results showed that ultrasonic treatment did not affect the molecular identity of the polysaccharide but modified its Mw distribution. AX-1 showed the highest antioxidant activity (75% inhibition) at 533 µg/mL by the DPPH method compared to AX and AX-2. AX at 0.25% (w/v) and AX-1 at 0.01% (w/v) exerted the highest protective effects on oxidative stability of soybean oil with induction periods of 7.69 and 5.54 h, respectively. The results indicate that AX could be a good alternative for the potential application as a natural antioxidant in oils.

scholarly journals Antioxidant Properties of Soybean Oil Supplemented with Ginger and Turmeric Powders

2020 ◽  
Vol 10 (23) ◽  
pp. 8438
Author(s):  
Federica Tinello ◽  
Stefania Zannoni ◽  
Anna Lante
Keyword(s):  
Antioxidant Activity ◽  
Soybean Oil ◽  
Oxidative Stability ◽  
Antioxidant Properties ◽  
Natural Antioxidants ◽  
Added Value ◽  
Human Consumption ◽  
Total Polyphenols ◽  
Lipid Stability ◽  
Freeze Dried

Soybean oil has been supplemented with 10% (w/w) of ginger and turmeric powders derived from commercial products (GC—commercial ginger and TC—commercial turmeric), freeze-dried rhizomes (freeze-dried ginger (GR) and freeze-dried turmeric rhizome—TR) and peels (freeze-dried ginger peel (GP) and freeze-dried turmeric peel—TP) for developing a functional seasoning with great lipid stability for human consumption. The exhausted ginger and turmeric powders were also recovered and recycled two times to promote a more sustainable process. The antioxidant activity and oxidative stability of oil samples were evaluated respectively by spectrophotometric and Rancimat methods. Folin–Ciocalteu assay and HPLC analysis were also performed to quantify total polyphenols, ginger-derived 6-gingerol and 6-shogaol, and turmeric-derived curcumin. Their antioxidant activity as well as oxidative stability, which non-linearly decreased over cycles because of a strongly reduced phenolic extractability, linearly increased with increasing phenolic yields. Hence, ginger and turmeric can be proposed as healthy spices containing bioactive compounds to control lipid oxidation and improve oil stability. Moreover, the valorization of peels as eco-friendly source of natural antioxidants is a valid strategy for providing added-value to these agro-food wastes.

Antioxidant Activity of Phenolic Compounds in Ethanolic Extract of Hibiscus sabdariffa L. on Oxidative Stability of Soybean Oil

2021 ◽  
Vol 17 ◽  
Author(s):  
Patricia Joho Hiromoto ◽  
Wellington Mamoro Umeda ◽  
Neuza Jorge
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Soybean Oil ◽  
Lipid Oxidation ◽  
Oxidative Stability ◽  
Secondary Compounds ◽  
Total Phenolic ◽  
Hibiscus Sabdariffa ◽  
Total Phenolic Compounds ◽  
Accelerated Storage

Background: The current interest in natural antioxidants from vegetable sources has been increasing in Brazil, mainly in bioactive antioxidants. The Hibiscus sabdariffa L. is rich in bioactive compounds, besides having antioxidant and antimicrobial properties. Objective: To evaluate the antioxidant effect of hibiscus extract on the oxidative stability of soybean oil in accelerated storage test. Methods: The ethanolic extracts of calyces and hibiscus seeds were evaluated for total phenolic compounds and antioxidant activity using DPPH, FRAP and β-carotene/linoleic acid. The treatments: OS, Tocopherol, Extract and Mixture, were prepared and submitted to accelerated storage at 60°C. The samples were analyzed on days 0, 6 and 12 for peroxides index, p-anisidine, total oxidation value, oxidative stability and tocopherols. Results: The extract of calyces of hibiscus presented higher amounts of total phenolic compounds and antioxidant activity, therefore, it was added to soybean oil. The Extract treatment promoted greater efficiency to inhibit of the formation of primary and secondary compounds of lipid oxidation, and provided high oxidative stability to the soybean oil, in addition to greater retention of tocopherols, mainly α- and γ-tocopherol isomers. Conclusion: Among the treatments studied, Extract promoted greater efficiency in the inhibition of the formation of primary and secondary compounds of lipid oxidation, besides providing greater oxidative stability and greater retention of tocopherols during storage.

scholarly journals Antioxidant activity of raspberry (Rubus fruticosus) leaves extract and its effect on oxidative stability of sunflower oil

2014 ◽  
Vol 52 (8) ◽  
pp. 5180-5187 ◽  
Author(s):  
Maryam Asnaashari ◽  
Raheleh Tajik ◽  
Mohammad Hossein Haddad Khodaparast
Keyword(s):  
Antioxidant Activity ◽  
Oxidative Stability ◽  
Sunflower Oil ◽  
Rubus Fruticosus
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