scholarly journals Antioxidant and Prebiotic Activity of Selected Edible Wild Plant Extracts

2016 ◽  
Vol 6 (1) ◽  
pp. 7
Author(s):  
Poloko Stephen Kheoane ◽  
Clemence Tarirai ◽  
Tendekayi Henry Gadaga ◽  
Carmen Leonard ◽  
Richard Nyanzi
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Plant Extracts ◽  
Acid Content ◽  
Dietary Fibre ◽  
Wild Plants ◽  
Wild Plant ◽  
Edible Wild Plant ◽  
Edible Wild Plants ◽  
Total Dietary Fibre

Edible wild plants were investigated as potential sources of antioxidants and prebiotics to benefit human health. Antioxidant activity, ascorbic acid and total dietary fibre contents were determined in edible wild plants from Lesotho, Swaziland and South Africa. Pure probiotic strains of Bifidobacterium animalis subsp. animalis (ATCC 25527), Lactobacillus rhamnosus (TUTBFD) and Lactobacillus acidophilus (ATCC 314) were cultured in broth containing edible wild plant extracts to assess their prebiotic activity. Cyperus esculantus had the highest arscobic acid content of 603±64.1 mg/100 g edible dry plant material followed by Rosa rubiginosa (500.8±48.8 mg/100 g). The two plants had IC50 of 10.7±0.2 µg/mL and 47.8±0.2 µg/mL for DPPH inhibition, respectively. Forty percent (40%) (n=30) of the edible wild plants had significant (p<0.01) total antioxidant activity (IC50<60 µg/mL) and high ascorbic acid content (>200 mg/100 g). Nasturtium officinale reported the highest yield for soluble fibre (25%) while Hypoxis hirsute had the highest total dietary fibre content (7.3%). Rorippa nudiuscula enhanced the growth of B. animalis significantly (p=0.001), 8-fold more than inulin. Chenopodium album and Urtica dioica stimulated the growth of L. rhamnosus significantly (p=0.0001) than inulin, respectfully, while Tragopogon porrifolius significantly (p=0.0001) stimulated the growth of L. acidophilus than inulin. It was concluded that the investigated edible wild plants from southern Africa have antioxidant and prebiotic properties that may be beneficial to human health.

THE SEASONAL VARIATION IN THE ASCORBIC ACID CONTENT OF EDIBLE WILD PLANTS COMMONLY FOUND IN NEW BRUNSWICK

1947 ◽  
Vol 25c (3) ◽  
pp. 95-101 ◽  
Author(s):  
Elizabeth A. Baird ◽  
Muriel G. Lane
Keyword(s):  
Ascorbic Acid ◽  
Seasonal Variation ◽  
New Brunswick ◽  
Acid Content ◽  
Dehydroascorbic Acid ◽  
Ascorbic Acid Content ◽  
Wild Plants ◽  
Edible Wild Plants ◽  
Green Leaves

The ascorbic acid content in the leaves of 10 wild plants that grow in New Brunswick was determined at approximately two-week intervals from June to September. 'Free' and 'total' dehydroascorbic acid were measured, using the method of Roe. The total ascorbic acid is highest in young green leaves. After the plants have flowered the ascorbic acid decreases. It becomes almost negligible when the leaves have wilted and turned brown. 'Free' dehydroascorbic acid was present in all 10 plants in small quantity. It fluctuated from time to time but remained fairly constant for all the plants during the period of investigation, and was independent of the 'total' value for that plant. The values for ascorbic acid have been measured for ripe strawberries, for fiddleheads, and for several common vegetables over the same summer months. They have been tabulated for comparison with the values of ascorbic acid of the 10 wild plants.

Ethnobotanical study of edible wild plants in Ensaro district, Amhara regional state, Ethiopia

2021 ◽  
Author(s):  
Asaye Asfaw Woldemedhin ◽  
Ermias Lulekal ◽  
Tamrat Bekele ◽  
Asfaw Debella ◽  
Eyob Debebe ◽  
...  
Keyword(s):  
Indigenous Knowledge ◽  
Plant Species ◽  
Life Forms ◽  
Wild Plants ◽  
Wild Plant ◽  
Edible Wild Plant ◽  
Socioeconomic Characteristics ◽  
Edible Wild Plants ◽  
Regional State ◽  
Wild Plant Species

Abstract Background: Ethiopia is one of the biodiversity-rich countries in Africa. Most rural communities are highly dependent on forest products including edible wild plants. Thus, many plant taxa are under greater threats before they are documented and their nutritional values are evaluated. This study was carried out to document edible wild plants and associated indigenous practices, and the correlations with socio-demographic variables on edible wild plants in Ensaro district, North Shewa Zone, Amhara Regional State, Ethiopia. It also examined the habitats and major threatening factors of edible wild plants.Methods: The study was conducted from September to December 2020 in Ensaro district, Amhara Regional State, Ethiopia. Semi-structured interviews was made with 98 community members regarding edible wild plant species, parts used, harvesting and consumption time, preparation methods, supplementary uses, life forms, habitats and threatening factors. The socioeconomics characteristics of the study participants was also documented. Excel and R-package were employed for statistical analysis. Analysis of Variance (P < 0.05) was used to observe the correlation of socio-demographic and socioeconomic characteristics with indigenous knowledge of respondents on edible wild plants.Results: Forty-three edible wild plants recorded in this study area. Fabaceae and Moraceae families were the most popular edible wild plant species in the study area. Shrubs were the dominant life forms of recorded plants (37%). Ripe fruits (72%) were the most commonly used plant parts. Indigenous knowledge of respondent on edible wild plants positively correlated with socio-demographic and socioeconomic characteristics of the respondents. There was no knowledge difference between genders. The number of species, genera and families of edible wild plants were higher in mid-land agro-ecology than in lowland and highland agro-ecologies of the study area. The distribution of edible wild plants found to be less in the highland agroecology. Edible wild plants in the study mainly found in shrub land areas which are highly threatened by fuelwood collection.Conclusion: Forty-three edible wild plants recorded in the study area. The community consumes edible wild plants during normal and famine periods. Edible wild plants such as Snowdenia polystachya (Muja), Eleusine coracana (Degelie or wanga), Urtica simensis(Sama) and Medicago polymorpha (Amaqito) are not used during normal period and young people do not know them even how to use them. In addition, edible wild plants are under greater pressure due to farmland expansion in the study area. This has led to the reduction of edible wild plants and associated indigenous knowledge.

Antioxidant Activity in Water and Methanol Extracts from Korean Edible Wild Plants

2011 ◽  
Vol 40 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Young-Min Lee ◽  
Ji-Hyun Bae ◽  
Ho-Young Jung ◽  
Jae-Hyun Kim ◽  
Dong-Sik Park
Keyword(s):  
Antioxidant Activity ◽  
Wild Plants ◽  
Methanol Extracts ◽  
Edible Wild Plants

scholarly journals Ascorbic Acid Content and Antioxidant Activity of Juice in Various Citrus Accessions

2009 ◽  
Vol 8 (3) ◽  
pp. 273-279 ◽  
Author(s):  
Masashi Yamamoto ◽  
Takanori Koga ◽  
Mayuko Fukuda ◽  
Tatsuya Kubo ◽  
Shigeto Tominaga
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Acid Content ◽  
Ascorbic Acid Content

scholarly journals Antioxidant activity and phenolic acid content of selected vegetable broths

2017 ◽  
Vol 35 (No. 6) ◽  
pp. 469-475 ◽  
Author(s):  
Filiz Bilge Ertekin ◽  
Korkmaz Nazli ◽  
Budak Nilgun H ◽  
Seydim Atif C ◽  
Seydim Zeynep B Guzel
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Acid ◽  
Acid Content ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Ascorbic Acid Content ◽  
Total Phenolic ◽  
Green Beans ◽  
Fresh Vegetables

The antioxidant activity and content of phenolic substances in vegetable broths were determined. Green beans, beetroots, courgettes, onions, parsley, carrots, cabbages, celery, broccoli, spinach, cauliflowers, and tomatoes were subjected to boiling. Fresh vegetables and vegetable broths were analysed for ascorbic acid content, total phenolic content, ORAC and TEAC values. Phenolic acids were quantified using HPLC. The ascorbic acid content of vegetables ranged from 5–109 mg/100 ml, while no ascorbic acids could be detected in vegetable broths. Total phenolic content was between 17–1729 mg GAE/l for all samples. ORAC and TEAC values of vegetable broths were between 0–3 µmol TE/ml and 0–2 µmol TE/ml, respectively. Gallic, chlorogenic, caffeic, p-coumaric, and ferulic acid were detected in both fresh vegetables and vegetable broths. The highest phenolic acid content was observed in water in which beetroots were boiled. It was found that the vegetable broths of beetroots, celery stalks, cabbages, parsley and broccoli harboured remarkable antioxidant activity.

scholarly journals Gathering Nutritious Edible Wild Plants Based on Societies Indigenous Knowledge from Sempolan, Jember Regency

2021 ◽  
Vol 21 (2) ◽  
pp. 393
Author(s):  
Kuswati Kuswati ◽  
Widi Cahya Adi
Keyword(s):  
Indigenous Peoples ◽  
Descriptive Analysis ◽  
Food Sources ◽  
Wild Plants ◽  
Wild Plant ◽  
Main Menu ◽  
Literature Study ◽  
Edible Wild Plants ◽  
Side Dish ◽  
Qualitative Descriptive

Indonesia, as a mega biodiversity country, has various types of wild plants. Sempolan Village, part of Jember Regency, has fertile land to support the growth of a wild plant. This research investigates wild plants used as food sources by indigenous peoples in Plalangan, Sempolan Village. This study also conducts data on how wild plants were cooked, served, and enriched by nutrition notice. The method is qualitative descriptive analysis obtained from observation, interview, documentation, and literature study. So, research results found 26 species and grouped them into 19 families. In addition, the locality of these species is in yards, fields, and roadsides. The habitus identified is an herb (77%), tree (11%), shrub (8%), and liana (4%). Those foods categorize into 1) carbohydrates sources, 2) vegetables, and 3) fresh fruits. The carbohydrate sources mostly served as a side dish, compote, and flour by stewing and frying. The vegetables include 18 species served as complements of the main menu, which cooked for soup, curry, stir fry, ointment, and pothok. Fresh fruits comprise of 4 species were directly consume or make a salad. Furthermore, all food resources contain essential nutrients like vitamins, macro and micro minerals, and phytochemicals that are important for society's growth and healthy lives. Finally, Information on wild plants as a food source will increase food diversification as well as dishes.

scholarly journals The Effect of the Drying Method on the Quality of Dried Kiwi Slices

2017 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Kamyar Movagharnejad ◽  
Sepideh Pouya
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Acid Content ◽  
Freeze Drying ◽  
Color Change ◽  
Ascorbic Acid Content ◽  
Standard Methods ◽  
Freeze Dryer ◽  
Microwave Dryer

Abstract— Drying is known as a food preservation method which increases the food’s storage time by water reduction. Traditional drying consisted of open sun-drying, but different industrial dryers have been widely used in recent times. The new dryers consist of convective, infrared, ultrasound, freeze fluidized bed and freeze dryers. All of these dryers reduce the water content but under different mechanisms which leads to the end products with different qualities. In this study we aim to compare the difference in quality of kiwi fruit slices dried by three different dryers: 1. Convective tray dryer, 2. Microwave dryer and 3. Freeze dryer. The tray dryer experiments were conducted in two air temperatures of 60 and 80oC in the constant air velocity of 0.8 m/s. The microwave dryer operated in 3 output powers of 180, 270 and 360 W. The condenser temperature and pressure in the freeze dryer reduced to -50oC and 0.1 mbar, respectively. The operating conditions and time were regulated so that the moisture content of all dried samples reduced to nearly 10% in the wet basis. The three parameters of color change, ascorbic acid and antioxidant reduction were selected as the measuring criteria for the comparison of the product qualities. The experiments show that the freeze drying caused the minimum color change while the microwave drying in the maximum power of 360W caused the maximum amount of color change. The concentration of ascorbic acid was measured in the fresh fruits and dried samples by standard methods. The measurements proved that the ascorbic acid content of the freeze dried samples was 80% of the fresh fruits. The ascorbic acid content of other samples was much lower. The antioxidant activity of the dried samples and the fresh fruits was also measured by standard methods and the experimental data also showed that the freeze drying causes the minimum reduction in the antioxidant activity.

scholarly journals Bioactive compounds in different acerola fruit cultivares

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2505
Author(s):  
Flávia Aparecida De Carvalho Mariano-Nasser ◽  
Maurício Dominguez Nasser ◽  
Karina Aparecida Furlaneto ◽  
Juliana Arruda Ramos ◽  
Rogério Lopes Vieites ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Acid Content ◽  
Nutritional Value ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Instrumental Color ◽  
Total Antioxidant

The increased consumption of acerola in Brazil was triggered because it is considered as a functional food mainly for its high ascorbic acid content, but the fruit also has high nutritional value, high levels of phenolic compounds, total antioxidant activity, anthocyanins and carotenoids in its composition. The objective was to evaluate the chemical, physical-chemical and antioxidant activity of eight varieties of acerola tree. The acerolas used in the research were the harvest 2015, 8 varieties: BRS 235 - Apodi, Mirandópolis, Waldy - CATI 30, BRS 238 - Frutacor, Okinawa, BRS 236 - Cereja, Olivier and BRS 237 - Roxinha, from the Active Bank Germplasm APTA Regional Alta Paulista in Adamantina - SP. Avaluated the following attributes: pH, titratable acidity, soluble solids, reducing sugar, instrumental color, ascorbic acid, total phenolics, flavonoids and antioxidant activity. The design was completely randomized, 8 varieties and 3 replications of 20 fruits each. Acerola fruit of the analyzed varieties prove to be good sources of phenolic compounds and antioxidant activity, ensuring its excellent nutritional quality relative to combat free radicals. The variety BRS 236 - Cereja presents higher ascorbic acid content, antioxidant activity and phenolic compounds, and the lowest value for flavonoid, which was higher than the other cultivars, especially Olivier and Waldy CATI-30.

scholarly journals Abortifacient and Antioxidant Activities of Avicennia marina

2015 ◽  
Vol 33 ◽  
pp. 12-26
Author(s):  
Muppaneni Srikanth ◽  
Battu Ganga Rao ◽  
Mallikarjuna Rao Talluri ◽  
T. Rajananda Swamy
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Free Radicals ◽  
Plant Extracts ◽  
Antioxidant Activities ◽  
Avicennia Marina ◽  
Standard Drug ◽  
Hydroalcoholic Extract ◽  
Pure Compounds ◽  
Post Implantation

The current study was intended to evaluate abortifacient and antioxidant activity of Avicennia marina leaves extracts. Abortifacient activity was evaluated in rats, compared with standard drug (Mifepristone) and antioxidant activity was evaluated by using three free radicals (Superoxide, Hydroxyl and DPPH) compared with Ascorbic acid. The extracts were showed pre implantation loss, post implantation loss of implantations and decreased the survival ration of foetuses. Among all extracts hydroalcoholic extract showed better activity. The selected plant extracts showed concentration dependent percentage inhibition of free radicals. Among three extracts hydroalcoholic extract showed better activity with IC50 values on superoxide, hydroxyl and DPPH radicals were 203μg, 237μg and 143μg. From the results obtained during the study it the hydroalcoholic extract was used for the isolation of pure compounds, and isolated the different compounds (β-sitosterol, Lupeol and Betulinic acid).

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