Grewia bicolor seed oil: Putative pharmaceutical, cosmetic and industrial uses

Nyakudya, Trevor Tapiwa; Nosenga, Nosiephi; Chivandi, Eliton; Erlwanger, Kennedy H.; Gundidza, Mazuru; Gundidza, E.; Magwa, M. L.; Muredzi, P.

doi:10.1016/j.sajb.2015.01.004

Cited by 20 publications

(14 citation statements)

References 24 publications

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“…The saponification value (SV) ( Figure 1 D) is useful for predicting the chain length of fatty acids, wherein a higher SV indicates a shorter chain length. Oils with high saponification values are important in the food and cosmetic industry, because they are less susceptible to deterioration in comparison to long fatty acids chains [ 24 ]. The SV (171.12 ± 0.97 mg·OH/g oil) obtained after extraction was lower than the value reported for Nile tilapia crude fish oil (194.91 mg·KOH/g oil) [ 11 ].…”

Section: Resultsmentioning

confidence: 99%

Thermo-Oxidative Stability Evaluation of Bullfrog (Rana catesbeiana Shaw) Oil

et al. 2017

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Bullfrog oil (BO), a natural product obtained from recycling of adipose tissue from the amphibian Rana catesbeiana Shaw, has been recently evaluated as a therapeutic activity ingredient. This work aimed to evaluate the long-term and accelerated thermal oxidative stabilities of this product, which is a promising raw material for emulsion technology development. BO was extracted from amphibian adipose tissue at 70 °C with a yield of 60% ± 0.9%. Its main fatty acid compounds were oleic (30.0%) and eicosapentaenoic (17.6%) acids. Using titration techniques, BO showed peroxide, acid, iodine and saponification indices of 1.92 mEq·O2/kg, 2.95 mg·KOH/g oil, 104.2 g I2/100 g oil and 171.2 mg·KOH/g oil, respectively. In order to improve the accelerated oxidative stability of BO, synthetic antioxidants butylhydroxytoluene (BHT) and buthylhydroxyanisole (BHA) were used. The addition of BHT increased the oxidation induction time compared to the pure oil, or the oil containing BHA. From the results, the best oil-antioxidant mixture and concentration to increase the oxidative stability and allow the oil to be a stable raw material for formulation purposes was derived.

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Section: Resultsmentioning

confidence: 99%

Thermo-Oxidative Stability Evaluation of Bullfrog (Rana catesbeiana Shaw) Oil

et al. 2017

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“…These indicate a predominance of long chain fatty acids in these oils [66]. Very important for the food and cosmetics industries, oils with high saponification values would be less sensitive to deterioration [67]. The results also indicate that the saponification values are higher than those of Persea americana oil (35.76 mgKOH/g) [27], argan oil (190.88 mgKOH/g) [68] and olive oil (97.94 mgKOH/g) [46].…”

Section: Chemical Propertiesmentioning

confidence: 94%

Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of <i>Adansonia digitata</i> Oil

Cissé¹,

Sow²,

Poucheret³

et al. 2018

FNS

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In this study, the effect of extraction processes on the physicochemical characteristics and antioxidant potential of baobab (Adansonia digitata L.) seed oil was evaluated. The oils were extracted, on the one hand, by cold pressing, and on the other hand, with three types of organic solvents (acetone, chloroform, n-hexane). The recorded results indicated that the extraction yield of baobab oil was significantly impacted by both the extraction method and the polarity of the solvent used. In addition, chloroform provides the best extraction yield (40.12 ± 0.607). However, extraction by cold pressure preserves at best the physicochemical and bioactive properties of the extracted oils. Indeed, the pressing oil contains a content of phenolic compounds (0.047 ± 0.0024 mgEAG/g of oil) and a very high radical scavenging activity (DPPH) (31.71% ± 0.61%). For the various oils extracted, the minimum and maximum values were 0.50 and 3.17 mEq·kg −1 ; 56.26 and 99.113 mgI 2 ·100 g −1 ; 1.457 and 1.465; 205.37 and 233.587 mgKOH/g respectively for the peroxide, iodine, refractive and saponification values. The color parameters (L*, a* and b*) of the oils also differ depending on the nature of the organic solvent used. Principal component analysis (PCA) and correlation analysis were performed on the physicochemical properties and the antioxidant potential of the extracted oils. Therefore, the results suggest the mixed use of acetone and hexane to obtain oil comparable to that extracted by cold pressing.

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“…Erythema, edoema, and pigment darkening are the acute effects of UVB irradiation on human skin, followed by delayed tanning, thickening of the epidermis and dermis, and vitamin D production; longterm UVB effects include photoaging, immunosuppression, and photocarcinogenesis. [3,11] UVB-induced erythema appears four hours after exposure, peaks between eight and twentyfour hours, and declines over a day or so; among fair-skinned and elderly people, UVB erythema may be chronic, occasionally latent [3,12]. With longer wavelengths, the efficiency of UV to induce erythema decreases rapidly; in comparison to UVB, roughly 1000 times more UVA exposure is required to elicit the same erythemal response.…”

Section: Uv Radiation Has a Number Of Negative Impactsmentioning

confidence: 99%

“…With time, different therapeutic effects of the concerned genus are being established apart from its traditional utilization as fruit and cooling drink. Grewia bicolor seed oil is a promising cosmetic ingredient because of the ability of linoleic acid to encourage skin regeneration and moisturization [12]. Grewia is a good source of vitamins, minerals, flavonoid, and phenolic compounds, among other things, according to the literature, making this plant very beneficial to people.…”

Section: Uv Radiation Has a Number Of Negative Impactsmentioning

confidence: 99%

Assessment of the Total Flavonoid, Phenol, Alkaloid Content and Sun Protection Factor in Grewia abutilifolia Leaf Extract

Kharkwal

Jha

Rai

2021

JPRI

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A variety of secondary metabolites provide a valuable source of treatment for various pharmacological ailments. Grewia abutilifolia is a shrub found in the family Tiliaceae that is also investigated for its nutritional and medicinal benefits. Grewia is reported for its good antioxidant potential, which is applied to protect skin from UV rays. The main goal of this study is to determine the in-vitro sunscreen effect of Grewia abutilifolia based on phytochemical evidence of UV protection. Chemical treatments used to protect skin from the sun have several drawbacks, including numerous hazardous side effects on humans and the environment. The hydroalcoholic, ethyl acetate, and methanolic extracts were studied for their phytochemical, physicochemical, and sun protection activities. Total phenolic content, total alkaloid content, total flavonoid content, and SPF value were all highest in the methanolic leaf extract, with values of 99.20 0.12, 47.661.527, 96.02, and 14.50.01 for total phenolic content, total alkaloid content, total flavonoid content, and SPF value, respectively.

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Grewia bicolor seed oil: Putative pharmaceutical, cosmetic and industrial uses

Cited by 20 publications

References 24 publications

Thermo-Oxidative Stability Evaluation of Bullfrog (Rana catesbeiana Shaw) Oil

Thermo-Oxidative Stability Evaluation of Bullfrog (Rana catesbeiana Shaw) Oil

Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of <i>Adansonia digitata</i> Oil

Assessment of the Total Flavonoid, Phenol, Alkaloid Content and Sun Protection Factor in Grewia abutilifolia Leaf Extract

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Grewia bicolor seed oil: Putative pharmaceutical, cosmetic and industrial uses

Cited by 20 publications

References 24 publications

Thermo-Oxidative Stability Evaluation of Bullfrog (Rana catesbeiana Shaw) Oil

Thermo-Oxidative Stability Evaluation of Bullfrog (Rana catesbeiana Shaw) Oil

Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of &lt;i&gt;Adansonia digitata&lt;/i&gt; Oil

Assessment of the Total Flavonoid, Phenol, Alkaloid Content and Sun Protection Factor in Grewia abutilifolia Leaf Extract

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Product

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Impact of Extraction Method on Physicochemical Characteristics and Antioxidant Potential of <i>Adansonia digitata</i> Oil