Optimization and characterization of oil extracted from Croton macrostachyus seed for antimicrobial activity using experimental analysis of variance

Bayisa, Yigezu Mekonnen; Bullo, Tafere Aga

doi:10.1016/j.heliyon.2021.e08095

Cited by 20 publications

(10 citation statements)

References 14 publications

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“…The percentage of oil yield obtained from jackfruit seed in the present study was lesser than Madrigal-Aldana et al [19], where they studied the jackfruit seed in two stages of ripeness, i.e., physiological mature and consumption ripeness. Seed oil yields obtained from the present study (Table 1) were also compared with oil yields from seeds of sacha inchi [20], fig [21], Gmelina arborea [22], Maesa lanceolata [23] and Croton macrostachyus [24] as they similarly performed oil extraction using Soxhlet apparatus and hexane as solvent but with different extraction time. Mean value ± standard deviation (n=2)…”

Section: Percentage Of Oil Yields Extracted From Calamansi Roselle An...mentioning

confidence: 99%

Physical and chemical characterization of oil extracted from Citrofortunella microcarpa, Hibiscus sabdariffa and Artocarpus heterophyllus seeds

Fai

Cheok²

2022

PROGEE

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Consumable plant oils had been related with highly nutritional content and antioxidant source that provide crucial health benefits. Hence, in this study a series of experimental work and analysis were conducted to evaluate the practicability and the properties of oil extraction from seeds of calamansi (Citrofortunella microcarpa), roselle (Hibiscus sabdariffa), and jackfruit (Artocarpus heterophyllus). The yield, antioxidant activities, iodine value, saponification value, and peroxide value of extracted seed oils were studied. Results obtained shown that among the three seeds species, calamansi seeds resulted in the highest yield of 32.7%, followed by roselle seeds with a yield of 11.00% and lastly, jackfruit seeds with the highest yield obtained was only 0.60%. Antioxidant activities conducted has shown that roselle with EC50 of 49.04 mg/mL has greater antioxidant properties as compared with calamansi with EC50 of 109.74 mg/mL. Iodine value determined for unheated oil has resulted in a value of 100.83 g I2/100g oil and 110.60 g I2/100g oil that has classified roselle and calamansi seeds oil under the non-drying oil categories and heating effect shown a slight decrease in the iodine value due to loss of unsaturation within the oil. Both calamansi and roselle seed oils did not show significance reduction in saponification value upon heating. Peroxide value for roselle and calamansi seeds oil under unheated condition was determined to be 10.36 meq/kg and 24.86 meq/kg respectively.

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Section: Percentage Of Oil Yields Extracted From Calamansi Roselle An...mentioning

confidence: 99%

Physical and chemical characterization of oil extracted from Citrofortunella microcarpa, Hibiscus sabdariffa and Artocarpus heterophyllus seeds

Fai

Cheok²

2022

PROGEE

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“…In order to analyze the validity of the regression model, the variance analysis of the above regression equation is shown in Table 5. From Table 5, it can be seen that the model constructed in this paper has a P-value < 0.01 (highly significant), which indicates that the model has high reliability [46][47][48]. The correlation coefficient (R 2 ) tends to be close to 1, which indicates a well-fitting model.…”

Section: Testing Of the Modelmentioning

confidence: 74%

Fly Ash and Slag as Partial Replacement of Cement for the Synthesis of Low Carbon Cementitious Materials

Hu¹,

Li²,

Zheng³

et al. 2023

Journal of Renewable Materials

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Tailings known as solid waste are generated by the mining industry. The development of tailings as wet shotcrete aggregates has significant economic and environmental benefits. The fine particle size of the tailings results in a large consumption of traditional cement as a cementitious material and insignificant improvement in strength. Therefore, a composite cementitious system of cement and solid waste resources (fly ash and slag powder) is explored for this study. In this paper, the response surface methodology (RSM) is used to optimize the experimental design and a multivariate nonlinear response model with cement, fly ash and slag powder contents as variables are constructed, which can investigate the effect of the composite cementitious system on the strength of tailing wet shotcrete (TWSC). In addition, the information entropy (IE) is introduced and combined with the RSM to evaluate the composite cementitious system. Finally, the desirability function (DF) combined with RSM is used to optimize the composite cementitious system. The results show that the response model constructed in this paper has R 2 = 0.96 and P-value < 0.01 (the test result of the model is P-value < 0.01), which indicates that the model has high reliability. The higher the content of slag powder and cement in the composite cementitious system, the higher the strength and comprehensive score of the TWSC. There is a critical value of fly ash content, which makes the maximum cementation of the composite cementing system. The optimal mix proportion of the composite cementitious system is obtained based on RSM-DF, which leads to the strength of TWSC at different curing time to achieve the expected index.

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“…Additionally, the refractive index of fat of enzymetreated (1.481 ± 0.0019), water-treated (1.485 ± 0.0005) and untreated (1.493 ± 0.0003) samples also differed considerably (P < 0.05). Decrease in the refractive index of enzyme-treated sample was probably at the highest level of unsaturation, not only as reflected by the iodine value but also by shortened fatty-acyl chain components as well as higher saponification number (Bayisa and Bullo, 2021). By increased refractive index of enzyme-treated samples, the fat hydrolysis of native enzyme lipase indicated a higher free fatty acid.…”

Section: Physicochemical Properties Of Extracted Fat From P Angolensi...mentioning

confidence: 94%

An enhanced fat extraction from Pycnanthus angolensis (African nutmeg) seeds using cellulase from Aspergillus niger strain BC23

Chiwetalu

Ossai

Enechi

et al. 2022

Qual. Assur. Saf. Crops Foods

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A promising extraction method for obtaining fat from Pycnanthus angolensis seeds through Aspergillus niger strain BC23 enzyme pretreatment and particle size reduction is presented in this work. The employed A. niger enzyme was produced from corn bagasse waste material, which served as the only source of carbon. P. angolensis seeds were dried, pulverized and subsequently sieved into two different particle sizes of 1.0 mm and 1.4 mm. This was followed by enzyme pretreatment prior to fat extraction. Results demonstrated that while the peak enzyme activity (121.036 U/mL) occurred on day 4 of fermentation, the maximum cellulase activity could be achieved at 60% saturation of ammonium sulfate purification. Compared with the results of water-treated and untreated seed samples, the fat yield, free fatty acid and iodine values of the enzyme-treated seed samples were considerably higher (P < 0.05). As peroxide value was less in the enzyme-assisted extracted fat, which pointed to a good-quality oil, the decreased refractive index suggested peak unsaturation. Despite considerable differences (P < 0.05) in refractive indices, fat’s specific gravity matched (P > 0.05) when enzyme-treated, water-treated and untreated samples were compared. On the whole, size reduction of P. angolensis seeds pretreated with A. niger cellulase enzyme to improve both fat quality and yield implied it as a useful inventory for confectionary as well as cosmetic industries.

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Optimization and characterization of oil extracted from Croton macrostachyus seed for antimicrobial activity using experimental analysis of variance

Cited by 20 publications

References 14 publications

Physical and chemical characterization of oil extracted from Citrofortunella microcarpa, Hibiscus sabdariffa and Artocarpus heterophyllus seeds

Physical and chemical characterization of oil extracted from Citrofortunella microcarpa, Hibiscus sabdariffa and Artocarpus heterophyllus seeds

Fly Ash and Slag as Partial Replacement of Cement for the Synthesis of Low Carbon Cementitious Materials

An enhanced fat extraction from Pycnanthus angolensis (African nutmeg) seeds using cellulase from Aspergillus niger strain BC23

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