Comparisons of antioxidant activities of two varieties of pumpkin (<i>Cucurbita moschata and Cucurbita maxima</i>) extracts

Indrianingsih, Anastasia Wheni; Rosyida, Vita Taufika; Apriyana, Wuri; Hayati, Septi Nur; Nisa, K.; Darsih, Cici; Kusumaningrum, Annisa; Ratih, D Suskandini; Indirayati, N

doi:10.1088/1755-1315/251/1/012021

Cited by 20 publications

(19 citation statements)

References 16 publications

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“…The antioxidant property of V. unguiculata in this work tallies with Adjei-Fremal [41] in which they also found a correlation between phenolic content with antioxidant power. The antioxidant property of C. maxima extract at 100mg/mL agrees with [42] in which they reported a good antioxidant activity.…”

Section: Antioxidant Activities Of Cucurbita Maxima and Vigna Unguiculata Ethanolic Leaf Extractssupporting

confidence: 84%

Evaluation and Comparison of the Antioxidant Activities and Nutritional Composition of Cucurbita maxima and Vigna unguiculata Leaf Extracts

Sha’a

2021

EJNFS

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Antioxidant activities and nutritional composition are essential ingredients normally considered in the choice of vegetables for human consumption. Leafy vegetables in particular, are regarded as protective foods in human diet due to their many health benefits. The aim of this research was to carry out the quantitative phytochemical screening, the antioxidant activities of extracts and determine the nutritional content of Cucurbita maxima and Vigna unguiculata leaves. Quantitative phytochemical screening were conducted using standard techniques. 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays were used to determine antioxidant activities of these extracts. Nutritional composition was determined using standard procedures. Quantitative analysis revealed the phytochemicals in C. maxima and V. unguiculata as; saponins (1.03%, and 1.34%), tannins (3.49% and 2.60%), terpenoids (0.0% and 0.47%), flavonoids (2.81% and 4.11%), alkaloids (5.72% and 3.5%), phenols (4.02% and 3.83%) respectively. There was a significant (p=0.05) difference in radical scavenging activity of ethanol leaf extract of V. unguiculata comprared to C. maxima. In FRAP both plants’ extract revealed a good antioxidant reducing power at 100mg/ml (range 0.40 to 0.5 absorbance) at 700nM. Antioxidant activities of extracts is attributed to their flavonoid and phenolic contents. Proximate analysis revealed the nutrients for C. maxima and V. unguiculata as; crude protein (11.58% and 14.83%), crude fat (0.47% and 0.61%), ash (4.11% and 3.72%), crude fiber (6.95 and 4.68%), moisture (1.03% and 1.38%), carbohydrate (75.86% and 74.78%) respectively. This shows that the leaves are a good source of energy to both humans and animals. Also, both vegetables revealed good percentages of proteins which can be used to compliment other sources of protein.

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Section: Antioxidant Activities Of Cucurbita Maxima and Vigna Unguiculata Ethanolic Leaf Extractssupporting

confidence: 84%

Evaluation and Comparison of the Antioxidant Activities and Nutritional Composition of Cucurbita maxima and Vigna unguiculata Leaf Extracts

Sha’a

2021

EJNFS

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“…The free radical scavenging activity for 800 μg/ml of flour extract ranged from 17.99% to 33.80% for the seeds, rind, and pulp of pumpkin. The extract (800 μg/ml) obtained from the pulp of C. maxima , seed of C. moschata , pulp of C. moschata , rind of C. moschata showed 29.60%, 25.42%, 23.85%, and 21.58% activity, respectively (Indrianingsih et al, 2019). Vijayraja and Jeyaprakash (2019) evaluated the antioxidant effect of Turbinaria ornata extract and found that 100 μg of extract showed 89.11% of total antioxidant activity in human RBC model.…”

Section: Discussionmentioning

confidence: 99%

Retracted: Characterization of partially purified alkaloids from Cucurbita maxima seed and evaluation of their antioxidant activity in human erythrocytes and leukocytes

Vasudhevan

Manikandan²,

Thangavel

et al. 2020

J Food Biochem

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Cucurbita maxima, is a therapeutic plant spread all over the world. The seed of C. maxima constitutes a large amount of alkaloids, phenolic compounds, Vitamin E, and other secondary metabolites. The experiment was performed in four setups (Control, Only H2O2, H2O2 + 25 mg of alkaloid, H2O2 + 50 mg of alkaloids). The enzymatic and nonenzymatic antioxidants and lipid peroxidation (LPO) were determined to analyze the antioxidant effect of partially purified alkaloids. The results showed that partially purified alkaloids from C. maxima seed reacts effectively on the erythrocytes and leukocytes antioxidant enzyme system when compared to the hydrogen peroxide group. The present results indicate that the alkaloids present in this plant can be used as a natural antioxidant for the pharmacological purposes. Practical applications The C. maxima seed constitutes rich source of alkaloids, phenolic compounds, Vitamin E, and other secondary metabolites. The results obtained revealed that the purified alkaloids from C. maxima seed acts as natural antioxidants, which enhanced the potential to scavenge H2O2 and aids in protecting the RBC and WBC cells. The presence of 27 alkaloids of which seven major alkaloids possessing higher medicinal properties like antioxidant, antimicrobial, anti‐inflammatory, antitumor, anti‐aging, anti‐diabetic, anticancer, anti‐malarial, analgesic, nematicide, pesticide, and hemolytic activity were determined from the GC‐MS analysis of the extract. Alkaloids acts as major constituent in phytotheraphy and has wide range of clinical application in humans and animals. In conclusion, alkaloids from C. maxima seed may have several properties that leading to the opening of new avenues in the natural product for the therapeutic purpose.

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“…Apart from the oil, pumpkin seed has been reported to contain a variety of nutritional compounds. The proximate compositions of C. moschata were mainly carbohydrate (39.51%), followed by fat (28.49%), protein (19.23%), water (7.67%) and ash (5.18%), respectively [ 35 ]. However, as compared to the previous studies using solvent and mechanical pressing, the present study revealed lower yields of C. moschata oil.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Fatty Acid Compositions, Antioxidant, and Pharmacological Activities of Pumpkin (Cucurbita moschata) Seed Oil from Aqueous Enzymatic Extraction

Prommaban

Kuanchoom

Seepuan

et al. 2021

Plants

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Pumpkin seed oil is a by-product, abundant in nutrients and bioactive components that promote several health benefits. This study aimed to compare chemical compositions, antioxidant, and pharmacological activities of pumpkin seed oils extracted from Cucurbita moschata Duch. Ex Poir. (PSO1) and Cucurbita moschata (Japanese pumpkin) (PSO2) by aqueous enzymatic extraction. An enzyme mixture consisting of pectinase, cellulase, and protease (1:1:1) was used in the enzymatic extraction process. Fatty acid composition of the oils was determined using fatty acid methyl ester/gas chromatographic-mass spectrometry. Antioxidant activity assays were measured by using stable free radical diphenylpicrylhydrazyl, radical cation 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonate, ferric reducing/antioxidant power, and ferric thiocyanate assay. Inhibition of enzymes involving skin aging and whitening process was investigated. Linoleic acid was a major component of all pumpkin seed oils. Additionally, there was also a significant amount of oleic acid, palmitic acid, and stearic acid detected. PSO2 possessed the highest antioxidant activities compared to PSO1 and commercial pumpkin seed oils (COM1 and COM2). Both PSO1 and PSO2 exhibited higher inhibitory effects on hyaluronidase, collagenase, and tyrosinase than the commercials. Therefore, aqueous enzymatic extraction could yield pumpkin seed oils with higher antioxidant, anti-aging, and whitening activities. This is beneficial for further pharmacological studies and can be used as a functional food for skin benefits.

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Comparisons of antioxidant activities of two varieties of pumpkin (Cucurbita moschata and Cucurbita maxima) extracts

Cited by 20 publications

References 16 publications

Evaluation and Comparison of the Antioxidant Activities and Nutritional Composition of Cucurbita maxima and Vigna unguiculata Leaf Extracts

Evaluation and Comparison of the Antioxidant Activities and Nutritional Composition of Cucurbita maxima and Vigna unguiculata Leaf Extracts

Retracted: Characterization of partially purified alkaloids from Cucurbita maxima seed and evaluation of their antioxidant activity in human erythrocytes and leukocytes

Evaluation of Fatty Acid Compositions, Antioxidant, and Pharmacological Activities of Pumpkin (Cucurbita moschata) Seed Oil from Aqueous Enzymatic Extraction

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