In Vitro Evaluation of Antioxidant and α-Glucosidase Inhibitory Assay of Several Tropical and Subtropical Plants

Indrianingsih, Anastasia Wheni; Tachibana, Sanro; Itoh, Kazuyoshi

doi:10.1016/j.proenv.2015.07.075

Cited by 64 publications

(51 citation statements)

References 20 publications

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“…The antioxidant capacity of the methanolic plant extracts was determined according to a method described by Indrianingsih et al (2015). In brief, 0.1 g β-carotene, 20 mg linoleic acid and 100 mg Tween 40 were separately dissolved in chloroform.…”

Section: β-Carotene-reducing Assaymentioning

confidence: 99%

“…Then, samples were incubated at 50°C for 2 h, after which the absorbance reading was measured at the same wavelength. Standards were prepared in the same concentration range and measured at the same wavelength (Indrianingsih et al 2015). The degradation rate of the samples was evaluated according to the following first-order kinetics equation (see Equation 2) (Maisarah et al 2013):…”

Section: β-Carotene-reducing Assaymentioning

confidence: 99%

“…The β-carotene-linoleate bleaching assay is usually conducted because most plants consist of a lipidwater system with some emulsifier. Hence, an aqueous emulsion system consisting of β-carotene-linoleic acid can be used to determine the antioxidant activity of plant extracts (Indrianingsih et al 2015). A free peroxy radical is usually formed in these systems upon oxidation of linoleic acid which then attacks β-carotene molecules, thereby triggering rapid decolourisation of β-carotene.…”

Section: β-Carotene-linoleate Bleaching Assaymentioning

confidence: 99%

“…juliflora ( that E. leptostachya and P. juliflora extracts efficiently inhibited the oxidation of linoleic acid, thereby inhibiting bleaching of β-carotene. In a similar study , Indrianingsih et al (2015) evaluated inhibition of β-carotene bleaching by the leaf extracts of C. esculenta. It was reported that the leaf extracts of C. esculenta were the most active extracts among the plants under study with an ability to protect β-carotene bleaching of 32.7%.…”

Section: β-Carotene-linoleate Bleaching Assaymentioning

confidence: 99%

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Antioxidant activity and antimicrobial properties of Entada leptostachya and Prosopis juliflora extracts

Ruto

Ngugi

Kareru

et al. 2018

JOMPED

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Background: Natural phytoconstituents produced by plants for their sustenance have been reported to reduce disease.Objectives: This study determined the phytoconstituents, antioxidant and antimicrobial activity of crude methanolic extracts of Entada leptostachya and Prosopis juliflora extracts.Methodology: Antioxidant activity was determined using 2,2-diphenyl-1-picrylhydrazyl and β-carotene assays; the total phenolic and flavonoid were estimated using Folin–Ciocalteau and aluminium chloride, whereas antimicrobial activity was determined using the zone of inhibition method.Results: Screening of the extracts revealed the presence of terpenoids, flavonoids, saponins and phenols. Fourier transform infrared spectra of the extracts revealed presence of hydrogen bonded –OH functional group. E. leptostachya barks had the highest antioxidant activity followed by P. juliflora roots, E. leptostachya roots and P. juliflora leaves [μg/mL]. Prosopis juliflora (roots) had the highest bleaching effect, whereas E. leptostachya (barks) had the lowest bleaching effect. The total flavonoids were determined to be 0.15 ± 0.02 mg/g, 1.18 ± 0.18 mg/g, 0.39 ± 0.05 mg/g and 0.64 ± 0.03 mg/g for E. leptostachya roots, E. leptostachya barks, P. juliflora leaves and P. juliflora roots extracts, respectively. The total phenols were determined to be 0.93 ± 0.18 mg/g, 2.69 ± 0.41 mg/g, 0.62 ± 0.08 mg/g and 0.62 ± 0.08 mg/g for E. leptostachya roots, E. leptostachya barks, P. juliflora roots and P. juliflora leaves extracts. All plant extracts exhibited moderate activity against the growth of selected microorganisms.Conclusion: Antimicrobial and antioxidant activity of the two plants was as a result of secondary metabolites found in the crude extracts.

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Section: β-Carotene-reducing Assaymentioning

confidence: 99%

Section: β-Carotene-reducing Assaymentioning

confidence: 99%

Section: β-Carotene-linoleate Bleaching Assaymentioning

confidence: 99%

Section: β-Carotene-linoleate Bleaching Assaymentioning

confidence: 99%

See 2 more Smart Citations

Antioxidant activity and antimicrobial properties of Entada leptostachya and Prosopis juliflora extracts

Ruto

Ngugi

Kareru

et al. 2018

JOMPED

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“…Reducing power represents a crucial mechanism of phenolic antioxidant action because the total phenolic content and ferric reducing power have high relation [43]. Furthermore, an amino group and different substituents on the phenyl of chalcone moiety play an important role in the reducing power compounds [44]. The phenolic compounds obtained from three Quercus species might contain a number of reductants which may react with the free radicals to stabilize and terminate from free radical chain reaction.…”

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confidence: 99%

Antioxidant Capacity and Phenolic Contents of Three Quercus Species

Tuyen

Khang

et al. 2016

ILNS

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ABSTRACT. The antioxidant capability and phenolic contents of ethanol extracts (free phenolics) and ethyl acetate extracts (bound phenolics) of three Quercus species were estimated in this work. The antioxidant activities were examined by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical, reducing power and -carotene bleaching methods. HPLC was employed to detect major phenolic acids. The leaf extract of Q. salicina contained maximum total phenolics while the highest total flavonoid content was found in the leaf extract of Q. serrata. The antioxidant activities varied among three species. Bark extract of Q. salicina was the most potential and it was closed to levels of the standard antioxidative dibutyl hydroxytoluene (BHT). The bark extract of Q. serrata also showed promising antioxidant activities despite their eminence was negligibly lower than Q. salicina. Stronger antioxidant activities of free phenolics than those of the bound phenolics may be attributed to higher quantities of free phenolics in the barks of Quercus species, however total flavonoids may not contribute a critical role. By HPLC analysis, thirteen phenolic acids were detected in the leaf and bark extracts. Of them, Q. salicina showed maximum in number (ten compounds) and quantities of detected phenolic acids. Ellagic, chlorogenic and benzoic acids were dominant in Quercus species. Findings of this study revealed that leaves and barks of three Quercus species are rich source of antioxidants, and Q. salicina is the most promising and should be elaborated to exploit its pharmaceutical properties.

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Control of microbial growth and lipid oxidation in beef using a Lepidium perfoliatum seed mucilage edible coating incorporated with chicory essential oil

Behbahani¹,

Falah

Vasiee

et al. 2021

Food Science & Nutrition

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Meat and meat products, due to their suitable pH, fermentable carbohydrate, and high contents of nitrogen, moisture, and fat, are highly prone to chemical and microbial deteriorations, which could affect the texture, flavor, color, and nutritional quality of the related products (Alizadeh Behbahani, Noshad, et al., 2020).Currently, hydrocolloid-based edible coatings are receiving a great deal of research and industrial attention as novel food packaging systems to ameliorate shelf life and quality of food products, through preventing chemical, microbial, and physical damages (Barzegar et al., 2020). Recently, the demand for polysaccharide gums of natural origin for the development of novel edible coatings has been increased.Lepidium perfoliatum (locally called Qodume shahri) is native to Iran, Iraq, Egypt, Arabia, and Pakistan, and its seed mucilage is widely used in traditional medicine to treat whooping cough, dry cough, and lung infections and as a demulcent (Koocheki et al., 2013). It has been reported that the mucilage extracted from L. perfoliatum seeds could be used as a stabilizing and thickening agent in food systems for viscosity increment, texture modification, and consistency stabilization purposes (Hesarinejad et al., 2014). It is also noteworthy that the L. perfoliatum seed mucilage (LPSM) films have good physicochemical, mechanical, and thermal properties and could be applied as a biodegradable

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In Vitro Evaluation of Antioxidant and α-Glucosidase Inhibitory Assay of Several Tropical and Subtropical Plants

Cited by 64 publications

References 20 publications

Antioxidant activity and antimicrobial properties of <i>Entada leptostachya</i> and <i>Prosopis juliflora</i> extracts

Antioxidant activity and antimicrobial properties of <i>Entada leptostachya</i> and <i>Prosopis juliflora</i> extracts

Antioxidant Capacity and Phenolic Contents of Three <i>Quercus</i> Species

Control of microbial growth and lipid oxidation in beef using a Lepidium perfoliatum seed mucilage edible coating incorporated with chicory essential oil

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