Recovery of Phytosterols from Waste Residue of Soybean Oil Deodorizer Distillate

Feng, Yong; Yang, Huijie; Wu, Daogeng; Huo, Ming; Li, Jianxin

doi:10.5772/14395

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…The maximum detectable masses of the campesteryl and stigmasteryl acetates were less than that of the molecular ion by 60 mass units, indicating that they lost one molecule of acetate. Other fragment ions of the steryl acetates remain consistent with the description in the literature concerning the electron impact mass spectra of steryl esters. − …”

Section: Resultssupporting

confidence: 86%

Novel Synthesis of Steryl Esters from Phytosterols and Amino Acid

Pang

Jiang

Cao

et al. 2011

J. Agric. Food Chem.

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The feasibility of esterification of phytosterol with the amino acid l-glutamic acid was established. The influence of various organic solvents was investigated, and n-butanol was selected as an ideal solvent for phytosteryl esters synthesis with l-glutamic acid. The reaction conditions were further optimized by orthogonal experiments, and a 92.3% degree of esterification was obtained when optimum conditions were used. FT-IR spectral, GC-MS, and NMR analyses were adopted to determine the steryl esters of l-glutamic acid. The FT-IR spectrum indicated the presence of ester bonds in the phytosteryl esters with l-glutamic acid, and on the basis of the detailed mass spectrography analysis, GC-MS and NMR offered an efficient and reliable way to confirm the steryl esters. This novel synthesis approach of phytosteryl esters with amino acid supplied a promising alternative to the substrate on esterification of phytosterols and thus can be readily applied to further studies of functional food ingredients of phytosteryl esters.

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Section: Resultssupporting

confidence: 86%

Novel Synthesis of Steryl Esters from Phytosterols and Amino Acid

Pang

Jiang

Cao

et al. 2011

J. Agric. Food Chem.

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“…One of the potential raw materials for biodiesel production is the Fatty Acid Distillate (FAD) that contains high amounts of FFAs. It is also a by-product obtained through the final deodorization stage of the refining process [6].…”

Section: Use Of By-products Of the Refining Oil Industry To Produce Bmentioning

confidence: 99%

By-products from the vegetable oil industry as a feasible source for biofuels production and pollution reduction

Piloto‐Rodríguez¹,

Melo²,

Tobio³

et al. 2024

RE&PQJ

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Biodiesel produced from by-products and waste materials can be an economical way for reducing the traditional oil consumption and environmental problems. The by-products from the refining vegetable oil industry such as soapstock, acid oil and fatty acid distillates are suitable for producing biodiesel. The present work is an approach to the use of these by-products to obtain biodiesel covering the traditional and most widely used acid/base catalysis. The advantages and drawbacks of the different methods are mentioned and analysed. The synthesis and use of by-products from the vegetable oil refining industry are covered in this work.

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“…It is also known that deodorizer distillates obtained during deodorization are characterized by higher content of tocopherols, sterols in comparison with a distillates obtained during distillation itself [10]. Thus, deodorizer distillates is a cheap source of valuable and useful substances such as tocopherols, sterols, squalene, and also fatty acids that have numerous industrial uses.…”

Section: Introductionmentioning

confidence: 99%

Сonditions for the obtaining of tocopherols from deodorizing distillates of sunflower oil

Demydova¹,

Nosenko²,

Shemanska³

et al. 2019

UJFS

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Introduction. A deodorizer distillate is a byproduct of oil deodoration, a natural source of tocopherols. The methods of obtaining a native antioxidants from a sunflower deodorizer distillate was investigated in this study. Materials and methods. The sunflower deodorizer distillates from a local enterprise were used in this work. The unsaponificated fraction of deodorizer distillate was separated by saponification. The kinetics of sunflower oil oxidation with/without antioxidants is investigated by the volumetric method. Results and Discussion. Deodorizer distillate increased sunflower oil induction period of oxidation by 1.5 times. Antioxidant activity of obtained concentrates was proved by increase of the induction period of oil oxidation almost three times as result of them addition in the amount of 50 mg per 100 g. Thus, saponification of deodorizer distillate gives possibility to obtain sufficiently effective inhibitor of oxidation. It was shown that more effective way of antioxidants concentrating from a deodorizer distillates was to dissolve it in n-hexane with further adsorption of tocopherols on the activated carbon. Tocopherols were proposed to be eluted from activated carbon by m-xylene, after evaporation of which a concentrate of tocopherols was obtained. Obtained concentrate increased in the period of sunflower oil oxidation induction by 4.2 times when 50 mg per 100 g of the antioxidant were added to the oil. The value of the rate constant of interaction of the peroxide radical with the inhibitor (K7) for the obtained antioxidant was determined to be 10 6 mol/l•sec. Conclusions. A method of obtaining tocopherol concentrates from sunflower oil deodorant was proposed. The efficacy of the obtained tocopherol concentrate as an antioxidant was proved.

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Recovery of Phytosterols from Waste Residue of Soybean Oil Deodorizer Distillate

Cited by 5 publications

References 4 publications

Novel Synthesis of Steryl Esters from Phytosterols and Amino Acid

Novel Synthesis of Steryl Esters from Phytosterols and Amino Acid

By-products from the vegetable oil industry as a feasible source for biofuels production and pollution reduction

Сonditions for the obtaining of tocopherols from deodorizing distillates of sunflower oil

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