Total phenolic content, antioxidant and antidiabetic properties of methanolic extract of raw and traditionally processed Kenyan indigenous food ingredients

Kunyanga, Catherine Nkirote; Imungi, Jasper K.; Okoth, Michael W.; Biesalski, Hans Konrad; Vadivel, Vellingiri

doi:10.1016/j.lwt.2011.08.006

Cited by 124 publications

(92 citation statements)

References 46 publications

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“…The interest in the study of bioactive compounds in foods and their contribution to antioxidant activity (Serafini et al, 2011) has increased the number of studies in which this activity is measured, among the consequent protective effect against various diseases (Kunyanga et al, 2012, Vadivel andBiesalski, 2011). Numerous studies have focused on analyzing the antioxidant activity of both seed nuts (Arcan andYemenicioğlu, 2009, Samaranayaka et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Soil and Climate Determine Antioxidant Capacity of Walnuts

et al. 2017

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Factors as variety, soil and climatic conditions can influence the nutritional composition of walnuts and its resultant biological activity. The aim of this work was to study the influence of soil and climate factors in the antioxidant capacity of 10 different varieties of nuts, obtained from two experimental cultivars with different weather and soil conditions. Ten different varieties of walnut samples were obtained from two experimental cultivars, analyzing the antioxidant capacity by ORAC, DPPH• and ABTS+ methods. Eureka and Tehama walnuts showed the highest antioxidant capacity. Only Chico and Serr varieties (measured by ABTS+ method) and Franquette variety (measured by ORAC assay) increased their antioxidant capacity when cultured in Torre Blanca plots. The growing in El Chaparral plots increased the antioxidant capacity of every different variety. Minor temperature (especially when it reaches over -0 ºC) and humidity, as well as an increase on the annual rainfall are noteworthy factors that influence on the increase of antioxidant capacity of the wide majority of the analyzed walnuts.

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Section: Introductionmentioning

confidence: 99%

Soil and Climate Determine Antioxidant Capacity of Walnuts

et al. 2017

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“…An increase in oxidative stress can cause metabolic or functional disorders of spermatozoa reducing sperm motility (Li et al, 2009). S. birrea fruit and S. pepo seed have been shown to possess polyphenols and high antioxidant activity (Borochov-Neori et al, 2008; Steinberg, 1991; Kunyanga et al, 2012). Thus plant extracts in this study may increase sperm motility via a reduction in oxidative stress.…”

Section: Discussionmentioning

confidence: 73%

A comparative study on the aphrodisiac activity of food plants <i>Mondia whitei, Chenopodium album,Ccucurbita pepo</i> and <i>Sclerocarya birrea</i> extracts in male wistar rats

Sewani-Rusike¹,

Iputo²,

Ndebia³

et al. 2015

Afr. J. Trad. Compl. Alt. Med.

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Background: Any substance that increases erectile function, sexual performance and enjoyment is considered an aphrodisiac. The aim of this study was to compare the effects of food plants Mondia whitei, Chenopodium album, Cucurbita pepo and Sclerocarya birrea extracts at a fixed dose of 200mg/kg body weight on sexual behavior, sperm parameters and testosterone levels in adult male rats. These are food plants also traditionally used as aphrodisiacs in South Africa, Zimbabwe and other parts of Africa. Materials and methods: Sexual behavior parameters assessed in this study included an arousal component (mount latency and intromission latency); sexual potency (mount frequency and intromission frequency), erection (copulatory efficiency) and ejaculations. All treatments were administered orally daily for 28 days. Sexual behavior parameters were quantified 2 hours after a single dose, at 14 days and at 28 days of treatment. Results: The order of efficacy in stimulating sexual behavior in male rats was M. whitei >S. birrea > C. pepo ≥ C. album. Although there was no change in number of ejaculations and sperm count (P>0.05) for all treatment groups compared to controls, all treatments increased (P<0.05) sperm motility. M. whitei and C. pepo treatments resulted in increased (P<0.05) serum testosterone levels. Conclusion: Therefore, this study demonstrates varying aphrodisiac activities of food plants used traditionally as aphrodisiacs.

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“…Moreover, many plants containing phenolic compounds have been found to possess good anticancer activity [33,34] and based on this fact plants rich in phenolic content have been considered as interesting in developing anticancer drug [35,36]. Phenolic compounds are known to be strong antioxidant compounds with the ability to scavenge free radicals [37,38] and the antioxidant potential of Lonicera japonica essential oil might be due to the presence of high levels of phenolic compounds [39,40]. Phenols are present to the tune of 13.9% in the plant selected for this study.…”

Section: Resultsmentioning

confidence: 99%

Gas Chromatography-Mass Spectrometry Analysis, in Vitro Cytotoxic and Antioxidant Efficacy Studies on Cleome Gynandra L. (Leaves): A Traditional Drug Source

Saravanan

Brindha

Narayanan

et al. 2017

Asian J Pharm Clin Res

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Objective: This study was aimed to assess the phytoconstituents, cytotoxic, and antioxidant efficacy of ethyl extract of Cleome gynandra leaves.Methods: Qualitative phytochemical analysis with different solvent extracts was performed. Quantitative and gas chromatography-mass spectrometry (GC-MS) analysis of the extract was performed with ethyl acetate extract. The cytotoxic effect of the ethyl acetate extract was determined by 3-[4,5-dimethylthiazol-2-yl]2,5-diphenyltetrazolium bromide (MTT) assay on Michigan Cancer Foundation-7 (MCF-7) cells using taxol as standard and free radical scavenging ability using 1,1-diphenyl-2-picrylhydrazyl (DPPH). Results:Leaves extracts with different solvents revealed the presence of alkaloids, cardiac glycosides, flavonoids, phenols, and tannins. GC-MS analysis of ethyl acetate of the plant leaves showed the presence of n-hexadecanoic acid. The IC 50 value of the ethyl acetate extract was found to be 90.2 μg/ml on MCF-7 cell line, and the extract was found to possess significant DPPH free radical scavenging activity. Conclusion:From the results, we conclude that the C. gynandra extract possesses antioxidant and antiproliferating activity against MCF-7 cells.

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Total phenolic content, antioxidant and antidiabetic properties of methanolic extract of raw and traditionally processed Kenyan indigenous food ingredients

Cited by 124 publications

References 46 publications

Soil and Climate Determine Antioxidant Capacity of Walnuts

Soil and Climate Determine Antioxidant Capacity of Walnuts

A comparative study on the aphrodisiac activity of food plants <i>Mondia whitei, Chenopodium album,Ccucurbita pepo</i> and <i>Sclerocarya birrea</i> extracts in male wistar rats

Gas Chromatography-Mass Spectrometry Analysis, in Vitro Cytotoxic and Antioxidant Efficacy Studies on Cleome Gynandra L. (Leaves): A Traditional Drug Source

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