Soaps of monohydroxystearic acid in syndet compositions

Osipow, Lloyd; Rosenblatt, William; Snell, Foster Dee

doi:10.1007/bf02663970

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Synthesis of 9-Hydroxyoctadecanoic acid Hydroxy octadecanoic acid was prepared 22 via sulphating oleic acid, followed by hydrolysis. Where, sulfuric acid (15 ml, 96%) was added dropwise to a stirred cooled oleic acid (20 g, 0.07 mol) in an ice bath, after the addition was completed, the stirring was continued in the ice bath for another 30 min.…”

Section: Organic Synthesismentioning

confidence: 99%

Synthesis and application of a new antibacterial surfactant from apricot kernel oil

Soliman

2023

Sci Rep

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Food emulsifier are mostly prepared from a lipophilic lipid tail with a hydrophilic sugar head. In this study, the lipophilic tail was obtained from apricot kernels, which are food waste, and the hydrophilic head was gluconic acid instead of sugar, in order to draw attention to the non-cyclic poly hydroxyl compounds. Thus, oleic acid of apricot kernel was used as the lipophilic moiety of the prepared surfactant. So, apricot kernel was grinned and dried, oil was extracted using soxhlet apparatus, Physical and chemical parameters and fatty acids composition of the extracted oil had been determined. The extracted oil was then hydrolyzed into glycerol and a mixture of free fatty acids. The fatty acids mixture was separated. Then, oleic acid was extracted individually in pure form using supercritical CO2 extractor, it was then confirmed according to its melting point, Gas chromatography–mass spectrometry (GC–MS) after esterification, elemental analysis, Proton nuclear magnetic resonance (H1NMR), and mass spectrometry (MS) to detect the corresponding molecular ion peak. The pure individual oleic acid was converted to hydroxy stearic acid, which was then converted to an amphiphilic compound (surfactant) via esterification reaction with the hydrophilic gluconic acid, and afforded a new surfactant known as 2,3,4,5-tetrahydroxy-6-((9-((-2,3,4,5,6-pentahydroxyhexanoyl) oxy)octadecanoyl) oxy)hexanoic acid or stearyl gluconate for simplification. The structures elucidation of all synthesized compound was established according to elemental analysis and spectral data (Fourier transform infrared IR, 1H NMR, 13C NMR and MS). Moreover, the prepared compound was tasted for its antibacterial activity, and showed good activities against some types of bacteria. The surface-active properties, foamability, foaming stability and emulsion stability of stearyl gluconate were studied and compared with the properties of the well-known surfactant sucrose stearate, and it was clear that, the activity of stearyl gluconate as a surfactant was higher than that of sucrose stearate. Moreover, establishment of safety of this compound was performed using albino rats by acute oral toxicity and kidney and liver functions of these mice. On the other hand, the prepared surfactant was used in the production of low fat—free cholesterol mayonnaise as egg replacer. Texture properties and the sensory evaluation of the prepared mayonnaise showed that the properties were improved by using the new prepared surfactant. Thus, the prepared gluconyl stearate can be used as a safe food additive.

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Section: Organic Synthesismentioning

confidence: 99%

Synthesis and application of a new antibacterial surfactant from apricot kernel oil

Soliman

2023

Sci Rep

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“…The critical micelle concentration: Many researchers determined the critical micelle concentration (CMC) percent for surfactant [38][39][40].…”

Section: The Critical Micelle Concentrationmentioning

confidence: 99%

Role of nozzle type and certain adjuvants in reducing application rates of imidacloprid and spirotetramat against whitefly, Bemisia tabaci (Gennadius) on zucchini plant.

Elkhiat¹,

Aly

mokbel³

et al. 2022

Egypt. J. Chem.

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In Egypt, zucchini squash, Cucurbita pepo L., is an important vegetable. Whitefly, Bemisia tabaci (Gennadius), has massively infested them. The insect has causes damage by sucking sap or spreading viruses, and it can considerably reduce yield. The widespread usage of traditional insecticides has resulted in a comeback of insecticide resistance. The current study examined the role of the nozzle type (cone nozzle Tx-6, flat fan Ss083), with two adjuvants (Argal (Silwet 408), and Techno oil) in the effectiveness of imidacloprid, and spirotetramat insecticides. Therefore, the recommended dose of these insecticides alone was compared to the recommended dose + adjuvants, ¾ recommended dose + adjuvants, and half recommended dose + adjuvants. The obtained data showed that imidacloprid was superior to spirotetramat. On the other hand, there was no significant difference between the nozzles used. In addition, adjuvants played an essential role in increasing the insecticides' effectiveness. Compared to insecticide alone, the adjuvant increased the efficacy of the insecticides when added to the recommended dose, and the¾ recommended dose of the insecticide. Additionally, adding Argal to the spray tank mixtures was more productive than adding Techno oil. The recommended dose of the target insecticides could be reduced, and the same effect is maintained through the optimal application method, with using adjuvants.

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Soaps of monohydroxystearic acid in syndet compositions

Cited by 2 publications

References 3 publications

Synthesis and application of a new antibacterial surfactant from apricot kernel oil

Synthesis and application of a new antibacterial surfactant from apricot kernel oil

Role of nozzle type and certain adjuvants in reducing application rates of imidacloprid and spirotetramat against whitefly, Bemisia tabaci (Gennadius) on zucchini plant.

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