scholarly journals Effect of Germination on Proximate, Available Phenol and Flavonoid Content and Antioxidant Activities of African Yam Bean (Sphenostylis stenocarpa)

2015 ◽  
Keyword(s):  
Antioxidant Activities ◽  
Flavonoid Content ◽  
African Yam Bean ◽  
Sphenostylis Stenocarpa

Survey of Chinese Cowpea Cultivars for Phenolic Compounds and Antioxidant Activity

2018 ◽  
Vol 17 (4) ◽  
pp. 337-348
Author(s):  
Bai Zhouya ◽  
Huang Xiaojun ◽  
Meng Jinxia ◽  
Kan Lijiao ◽  
Nie Shaoping
Keyword(s):  
Phenolic Compounds ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Jiangxi Province ◽  
Total Phenolic ◽  
Total Flavonoid Content ◽  
Flavonoid Content ◽  
Comprehensive Investigation ◽  
Cowpea Cultivars ◽  
P Distribution

Distribution of phenolic compounds and antioxidant activities was surveyed in 24 varieties of Chinese cowpea from 4 provinces. Identity of phytochemicals were determined by UPLC-ESIQTOF-MS/MS and quantified by HPLC-ESI-QqQ-MS/MS. Seven phenolic acids, 16 flavonoids and 9 other compounds were identified and several of these were quantified. Quercetin-3-glucoside and kaempferol-glucoside were the major phenolic compounds. In addition, our study indicated that OJYDH cultivar from Jiangxi province had the highest total phenolic content, total flavonoid content and stronger antioxidant activities than other cowpea cultivars. This study made a comprehensive investigation on antioxidants from cowpea and provided the useful data to support its function.

scholarly journals Establishing Relationship between Vitamins, Total Phenolic and Total Flavonoid Content and Antioxidant Activities in Various Honey Types

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4399
Author(s):  
Norhasnida Zawawi ◽  
Pei Juin Chong ◽  
Nurul Nadhirah Mohd Tom ◽  
Nurkhairina Solehah Saiful Anuar ◽  
Salma Malihah Mohammad ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Phenolic Acids ◽  
Antioxidant Activities ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Extrinsic Factors ◽  
Biochemical Compounds ◽  
Phenolic And Flavonoid

Honey is a well-known natural sweetener and is rich in natural antioxidants that prevent the occurrence of oxidative stress, which is responsible for many human diseases. Some of the biochemical compounds in honey that contribute to this property are vitamins and phenolic compounds such as phenolic acids and flavonoids. However, the extent to which these molecules contribute towards the antioxidant capacity in vitro is inconsistently reported, especially with the different analytical methods used, as well as other extrinsic factors that influence these molecules’ availability. Therefore, by reviewing recently published works correlating the vitamin, total phenolic, and flavonoid content in honey with its antioxidant activities in vitro, this paper will establish a relationship between these parameters. Based on the literature, vitamins do not contribute to honey’s antioxidant capacity; however, the content of phenolic acids and flavonoids has an impact on honey’s antioxidant activity.

scholarly journals ANTIOXIDANT PROFILE AND PHYTOCHEMICAL CONTENT OF DIFFERENT PARTS OF SUPER RED DRAGON FRUIT (HYLOCEREUS COSTARICENSIS) COLLECTED FROM WEST JAVA-INDONESIA

2017 ◽  
Vol 10 (12) ◽  
pp. 290 ◽  
Author(s):  
Irda Fidrianny ◽  
Nadia Ilham ◽  
Rika Hartati
Keyword(s):  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Phytochemical Content ◽  
Dragon Fruit ◽  
Dpph Method ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Different Parts

Objectives: The goals of this research were to observe antioxidant properties from different parts of super red dragon fruit (Hylocereus costaricensis) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS).Methods: Antioxidant activities were determined using DPPH and ABTS assays, total phenolic content (TPC) using Folin–Ciocalteu reagent, flavonoid content by Chang’s method.Results: Inhibitory concentration 50% (IC50) of DPPH scavenging activity of all of the extracts in the range of 2.69 μg/ml was −94.17 μg/ml. The ethyl acetate peel extract of super red dragon fruit expressed the highest TPC (4.56 g GAE/100 g) and the highest total flavonoid content (12.63 g QE/100 g). TPC in flesh extract of super red dragon fruit had a negative and significant correlation with their IC50 of ABTS. The IC50 of DPPH and IC50 of ABTS of flesh extract of super red dragon fruit showed positive and significant correlation.Conclusion: All different parts extracts of super red dragon fruit (except n-hexane flesh extract) were categorized as a very strong antioxidant by DPPH method. Phenolic compounds in flesh extract of super red dragon fruit were the major contributor in antioxidant activities by ABTS method. DPPH and ABTS showed linear results in antioxidant activities of super red dragon fruit flesh extract.

scholarly journals Total Phenolic and Flavonoid Content and Antioxidant Activities of Ten Malaysian Wild Mushrooms

OALib ◽  
2017 ◽  
Vol 04 (11) ◽  
pp. 1-9
Author(s):  
Jinting Azieana ◽  
Mohd Noor Zainon ◽  
Abdullah Noriham ◽  
Mat Nor Rohana
Keyword(s):  
Antioxidant Activities ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Wild Mushrooms ◽  
Phenolic And Flavonoid

scholarly journals Comparative study of herbal plants on the phenolic and flavonoid content, antioxidant activities and toxicity on cells and zebrafish embryo

2017 ◽  
Vol 7 (4) ◽  
pp. 452-465 ◽  
Author(s):  
Hassan Fahmi Ismail ◽  
Zanariah Hashim ◽  
Wong Tet Soon ◽  
Nur Syukriah Ab Rahman ◽  
Ain Nabihah Zainudin ◽  
...  
Keyword(s):  
Comparative Study ◽  
Zebrafish Embryo ◽  
Antioxidant Activities ◽  
Flavonoid Content ◽  
Herbal Plants ◽  
Phenolic And Flavonoid

scholarly journals IN VITRO ANTIOXIDANT AND PHYTOCHEMICAL ANALYSIS OF DIFFERENT PARTS OF SIMANA LAGI APPLE ([MALUS DOMESTICA BORKH.] “SIMANA LAGI”) GROWN IN EAST JAVA-INDONESIA

2017 ◽  
Vol 10 (11) ◽  
pp. 41
Author(s):  
Irda Fidrianny ◽  
Dhella Fitrani ◽  
Siti Kusmardiyani ◽  
Defri Rizaldy ◽  
Komar Ruslan
Keyword(s):  
Malus Domestica ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Scavenging Activity ◽  
Flavonoid Content ◽  
Malus Domestica Borkh ◽  
Dpph Method ◽  
Phenolic And Flavonoid ◽  
Different Parts

  Objectives: The goals of this research were to observe antioxidant properties from different parts of Simana lagi apple ([Malus domestica Borkh.] “Simana lagi”) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis(3-ethylbenzthiazoline-6- sulfonic acid (ABTS) and correlation of total phenolic and flavonoid content with their inhibitory concentration 50 (IC50) of DPPH and IC50 of ABTS.Methods: Each sample was extracted by reflux using different polarity solvents. The extracts were evaporated using rotary evaporator. Antioxidant activities were tested using DPPH and ABTS assays, determination of total phenolic, and flavonoid content were carried out by ultraviolet-visible spectrophotometry and correlation with their IC50 of DPPH and IC50 of ABTS activities were analyzed by Pearson’s method.Results: The ethanolic leaves extract (LV3) of Simana lagi apple also exposed the highest total phenolic content (TPC) (13.88 g gallic acid equivalents/100 g), while the highest total flavonoid content was presented by ethyl acetate extract (LV2) (7.21 g QE/100 g). The lowest IC50 of DPPH scavenging activity 0.19 μg/ml, and the lowest IC50 of ABTS scavenging activity 0.15 μg/ml was given by ethanolic flesh extract (FL3) of Simana lagi apple. There were significantly negative correlation between TPC in all different parts extracts of Simana lagi apple with their IC50 of DPPH and IC50 of ABTS.Conclusions: All different parts extracts of Simana lagi apple were categorized as very strong antioxidant by DPPH and ABTS method (except n-hexane peels extract and n-hexane LV by DPPH method, and n-hexane FE by ABTS method). The major contributor in antioxidant activities of peels, flesh and leaves extracts of Simana lagi apple by DPPH and ABTS methods were phenolic compounds. Antioxidant activities of peels, flesh and leaves extracts of Simana lagi apple showed linear results by DPPH and ABTS methods.

scholarly journals Evaluation of Nutritional and Antinutritional Properties of African Yam Bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms.) Seeds

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Taofeek T. Adegboyega ◽  
Michael T. Abberton ◽  
AbdelAziz H. AbdelGadir ◽  
Mahamadi Dianda ◽  
Busie Maziya-Dixon ◽  
...  
Keyword(s):  
Protein Content ◽  
Protein Energy Malnutrition ◽  
Research Field ◽  
Sub Saharan Africa ◽  
International Institute ◽  
African Yam Bean ◽  
Protein Energy ◽  
Small Holder Farmers ◽  
Sub Saharan ◽  
Sphenostylis Stenocarpa

African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms) is an annual legume with the capacity to produce bean seeds in a pod and produce tubers with varying seed patterns and colors. It is suggested to have the potential to significantly boost food security in sub-Saharan Africa due to its considerable nutritional qualities but still yet underutilized. Many farmers show limited interest in its production owing to limited knowledge of its nutritional profile, income generation capacity for small-holder farmers’, processing, and other related utilization concerns. This study evaluated the proximate and antinutrient composition of processed and unprocessed seeds of African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms.). Seeds were harvested from the experimental research field consisting of 50 accessions at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. They were divided into two portions; the first was processed by oven drying at 60°C for 24 hours and the second was left raw. There were significant differences (P<0.05) in the levels of proximate and antinutrient in the forms in which the samples were analyzed. TSs104 had the highest protein content of 25.08%, while the lowest was TSs68 (20.50%). However, in the unprocessed seed, protein content ranged between 24.93% (TSs38) and 19.13% (TSs11). Both processed and unprocessed seeds had high carbohydrate contents. In processed seeds, TSs9 (62.93%) had the highest percentage and TSs1 (29.64%) recorded the lowest. In unprocessed seed, the percentage ranged between 67.36% (TSs4) and 54.23% (TSs38). The observed variation may suggest possible suitability of seed for various end-use products and targeted breeding programs for crop improvements. In sub-Saharan Africa, this lesser-known legume could be adapted as a promising food crop in combating protein-energy malnutrition.

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