Combined effect of carnosol, rosmarinic acid and thymol on the oxidative stability of soybean oil using a simplex centroid mixture design

Saoudi, Salma; Chammem, Nadia; Sifaoui, Inés; Jiménez, Ignacio A.; Lorenzo‐Morales, Jacob; Piñero, José E.; Bouassida-Beji, Maha; Hamdi, Moktar; Bazzocchi, Isabel L.

doi:10.1002/jsfa.8179

Cited by 16 publications

(10 citation statements)

References 39 publications

(56 reference statements)

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“…The ANOVA results for the responses are summarized in Table . It was reported that an F value greater than 4.64 or a P value less than 0.05 indicated that the regression equations were statistically significant . Hence the coefficients of linear, quadratic and special cubic were highly significant in this study.…”

Section: Resultsmentioning

confidence: 49%

“…The proportions of the granular ceramsite adsorbent were optimized by the SCMD method (Version 17.0, Minitab Inc., State College, PA, USA) to achieve superior adsorption capacity and mechanical strength for practical application. The SCMD could express the relationship between different variables and responses as well as optimize the component elements . In this study, four components with different functions, namely natural volcanic powder ( x 1 ), bentonite ( x 2 ), corn starch ( x 3 ) and aluminum sulfate ( x 4 ), were defined as independent variables and restricted by lower bound: x 1 ≥ 0.4, x 2 ≥ 0.2, x 3 ≥ 0.1, x 4 ≥ 0.1 and x 1 + x 2 + x 3 + x 4 = 1.0.…”

Section: Methodsmentioning

confidence: 99%

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Volcanic rock‐based ceramsite adsorbent for highly selective fluoride removal: function optimization and mechanism

Chao

Zhao

Song

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: While various granular adsorbents have been studied for fluoride removal from water, this study focuses on the optimization of mixture proportions of volcanic rock, bentonite, corn starch and aluminum sulfate using a four-component simplex-centroid mixture design (SCMD) method to achieve preferable fluoride removal ratio and ceramsite mechanical strength. To illustrate the adsorption mechanism, a series of experiments, including adsorption isotherms, adsorption kinetics and effects of pH value and co-existing anions, was carried out. RESULTS: The synthesized adsorbent was mesoporous with 77.82% pore size distribution in the range 1.70-38.80 nm by detailed physicochemical characterization. A stable fluoride removal ratio (87.5%) was obtained in the wide pH range of 4.0-11.0, and the adsorption capacity was 10.17 mg g −1 at 298 K. The adsorbent remained high selectivity for F − in the presence of sulfate (SO 4 2− ), chloride (Cl − ) and nitrate (NO 3 − ), while carbonate (HCO 3 − ) posed a slight adverse effect on F − adsorption due to ion competition. This adsorption process was well fitted with the pseudo-second-order kinetic model and the Freundlich isotherm model. Electrostatic attraction and M + -H 2 O and M + -F ligand exchange were dominant in the adsorption mechanisms. CONCLUSION: The synthesized ceramsite adsorbent will be competitive in the application for F − removal from aquatic environments.

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Section: Resultsmentioning

confidence: 49%

Section: Methodsmentioning

confidence: 99%

Volcanic rock‐based ceramsite adsorbent for highly selective fluoride removal: function optimization and mechanism

Chao

Zhao

Song

et al. 2019

J of Chemical Tech & Biotech

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“…Currently, the food industry is moving towards replacing the application of synthetic by natural antioxidants, which are considered safer and healthier [4]. Several studies proposed natural alternatives to BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene) for effectively improving the lipid stability of soybean oil [5][6][7][8][9][10][11][12][13][14][15]. Agro-food products, by-products and wastes are rich in bioactive compounds [16][17][18][19][20][21][22][23][24][25] thus contributing to the development of new functional ingredients and products [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Properties of Soybean Oil Supplemented with Ginger and Turmeric Powders

2020

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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.

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“…Rosmarinic acid (RA), a water-soluble natural antioxidant, has also been used to avoid oxidation of target components [17]. CA and RA have been recognized as food additives [18] and are increasingly being used in the food, nutrition, health [19], and cosmetics industries [18].…”

Section: Introductionmentioning

confidence: 99%

Efficient Homogenization-Ultrasound-Assisted Extraction of Anthocyanins and Flavonols from Bog Bilberry (Vaccinium uliginosum L.) Marc with Carnosic Acid as an Antioxidant Additive

et al. 2019

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To explore the optimum conditions for the extraction of anthocyanins and flavonols from bog bilberry (Vaccinium uliginosum L.) marc on a single-factor experimental basis, a response surface methodology was adopted for this intensive study. The extraction procedure was carried out in a Waring blender and followed an ultrasonic bath, and the natural antioxidant carnosic acid was added to inhibit oxidation. The optimum extraction conditions were as follows: a volume fraction of ethanol of 70%, an antioxidant content of 0.02% (the mass of sample) carnosic acid, a liquid–solid ratio of 16 mL/g, a homogenization time of 3 min, a reaction temperature of 55 °C, an ultrasound irradiation frequency of 80 kHz, an ultrasound irradiation power of 200 W, and an ultrasound irradiation time of 40 min. Satisfactory yields of anthocyanins (13.95 ± 0.37 mg/g) and flavonols (3.51 ± 0.16 mg/g) were obtained. The experimental results showed that the carnosic acid played an effective antioxidant role in the extraction process of anthocyanins and flavonols with a green and safety guarantee.

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Combined effect of carnosol, rosmarinic acid and thymol on the oxidative stability of soybean oil using a simplex centroid mixture design

Cited by 16 publications

References 39 publications

Volcanic rock‐based ceramsite adsorbent for highly selective fluoride removal: function optimization and mechanism

Volcanic rock‐based ceramsite adsorbent for highly selective fluoride removal: function optimization and mechanism

Antioxidant Properties of Soybean Oil Supplemented with Ginger and Turmeric Powders

Efficient Homogenization-Ultrasound-Assisted Extraction of Anthocyanins and Flavonols from Bog Bilberry (Vaccinium uliginosum L.) Marc with Carnosic Acid as an Antioxidant Additive

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