scholarly journals Study of o Catechins as Antioxidant Extract from black, white shada seeds and waste of squeezed grape

2014 ◽  
Vol 8 (2) ◽  
pp. 57-63
Author(s):  
Ashraq Monir ◽  
Nidhal Mohammad ◽  
Akram Thabet
Keyword(s):  
Antioxidant Activity ◽  
Peroxide Value ◽  
Sunflower Oil ◽  
Grape Seed ◽  
The Other ◽  
Distilled Water ◽  
Bleaching Test ◽  
Seed Extraction ◽  
High Antioxidant Activity ◽  
Β Carotene

Catechins were extracted from black shada, white shada seeds and waste of squeezed grape by mixed each sample with distilled water(1:10), with ethyl acetate(1:1) v/v. Detection of active compounds in the extracts done using IR technique β-carotene bleaching test and peroxide value(POV). Results showed that the black grape seed and the waste of squeezed grape have high antioxidant activity( 64 and 52 g/k grespectively), in comparison with BHT, while it was lower than PG which were 48 and 41.6g/kg compared with PG. On the other hand white grape seed extraction was in the middle between obvious two extractions and was 48 and 36g/kg in comparative with BHT and PG respectively. Peroxide value was determined in sunflower oil for 14 days at 65oc, and showed that these extractions have antioxidant activity and similar to butylated hydroxyl toluene BHT and propyl galate PG.

scholarly journals Antioxidant Activity of Dominant Plants Species in Obat Pahit from Lingga Malay Ethnic in Riau Archipelago

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Fitmawati Fitmawati ◽  
Nery Sofiyanti ◽  
Rodesia Mustika Roza ◽  
Isnaini Isnaini ◽  
Yulisa Resti Irawan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Secondary Metabolites ◽  
Vitamin C ◽  
Natural Resources ◽  
The Other ◽  
Distilled Water ◽  
Water Solvent ◽  
Activity Test ◽  
Dpph Method ◽  
Riau Archipelago

<p><em>Obat Pahit</em> is a potion that has been long commonly consumed by Lingga Malay society for generations as stamina keeper. The most dominant plants found in the packaging of the Obat Pahit were namely <em>Bauhunia semibifida, Cnestis palala</em> and Penawa Root (3 species). This research aimed to investigate and determine activity of antioxidant contents in <em>Obat Pahit</em> from five Traditional Medicine Practitioners (TMPs) in the district of Lingga. The tested samples were mashed then being soaked into 2 types of solvent: distilled water and methanol, containing HCl 1%. DPPH method was also used in this research. Quantitatively antioxidant activity test of <em>Obat Pahit</em> from the five TMPs by using methanol solvent had extremely highest activity compared to the distilled water solvent. The test, using TLC plate by spraying the extract from three dominant plants with 0.1 mM of DPPH solution, produced a pale-yellow spots at a wavelength of 366 nm. On the other hand, the test using HPLC at wavelengths of 230 nm and 280 nm showed the presence of two dominant secondary metabolites contents: flavonoid and phenolic. IC50 (ppm) of <em>Bauhinia semibifida</em> (6.6247), Penawa Root (5.0124) and <em>Cnestis palala</em> (5.9968) were much lower than IC50 of mangosteen’s rind (41.7675), vitamin C (6.6612) and Stimuno drug (8.333). This antioxidant analysis has not been reported previously. This proof contributed greatly to uncovering potentially native natural resources as an indigenous Indonesian drug which is expected to decrease dependence on imported drugs especially imunomodulator, antihypertensive, antidiabet etc. This research would be beneficial and excellent manifestation for the development of natural antioxidant-based medicines from traditional knowledge of Indonesia’s local ethnicities.</p>

scholarly journals Antioxidant Activity, Fiber, Acidity (pH), and Population of Lactic Acid Bacteria in Green Juice as Functional Beverages

2020 ◽  
Vol 2 ◽  
pp. 00005
Author(s):  
Ni Wayan Nursini ◽  
Komang Lina Venti ◽  
I Gusti Ayu Wita
Keyword(s):  
Antioxidant Activity ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Gravimetric Method ◽  
The Other ◽  
Crude Fiber ◽  
Plate Method ◽  
Dpph Method ◽  
Functional Beverages ◽  
Β Carotene

<p><span style="line-height: 107%;">Bok choy (<i>Brassica rapa </i>L) is a vegetable group of <i>Brassicaceae </i>which still a family with Chinese vegetables. It contains phytochemical substances such as carotenoids, </span><span lang="EN" style="line-height: 107%;">β-carotene</span><span style="line-height: 107%;">, and glucosinolates which are a source of antioxidant. Bok choy can be processed into juice. The purpose of this research is to determine the content of the antioxidant activity, fiber, acidity (pH) and population of lactic acid bacteria in each formulation. The other ingredients added in making this green juice are yogurt and honey made into 5 formulations. The analysis of this research was the analysis of antioxidant activity content using DPPH method (2.2, -diphenyl-1- picrylhydrazyl), crude fiber contents analysis using gravimetric method, pH analysis using pH meter and analysis of lactic acid bacteria using spread plate method. The result obtained is the highest content of the antioxidant activity was found in formulation 5 consist of 30 g yogurt, 15 g honey and 50 g bok choy with 35,198 ± 0,057%. The content of crude fiber ranged from (0,447 ± 0,046) g to (0,507 ± 0,058) g. The highest of acidity (pH) is in formulation 1 which consists of 10 g of yogurt, 15 g of honey and 50 g of bok choy at 5,50 ± 0,040. The highest population content of lactic acid bacteria in formulation 5 consists of 30 g yogurt, 15 g honey and 50 g bok choy at 2,8 x 106cfu/mL. Therefore, green juice can be used as functional drinks.</span><br> </p>

scholarly journals Chemical Composition, Antioxidant Properties and Anti-cholinesterase Activity of Cordia gilletii (Boraginaceae) Leaves Essential Oil

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Marco Bonesi ◽  
Philippe N. Okusa ◽  
Rosa Tundis ◽  
Monica R. Loizzo ◽  
Federica Menichini ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antioxidant Properties ◽  
In Vitro Tests ◽  
Bleaching Test ◽  
Total Oil ◽  
Β Carotene ◽  
Terpene Derivatives

This study aimed to investigate for the first time the chemical composition, the antioxidant properties and the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity of the essential oil from the leaves of Cordia gilletii De Wild (Boraginaceae). The essential oil, characterized by 23 constituents (90.1% of the total oil), was constituted by terpene derivatives (25.6%) and non-terpene derivatives (64.5%), among which aldehydes, fatty acids and alkanes were present with the percentage of 16.5%, 18.8% and 23.1%, respectively. The antioxidant activity of C. gilletii essential oil was screened by two in vitro tests: DPPH and β-carotene bleaching test. The essential oil revealed antioxidant activity with an IC50 value of 75.0 and 129.9 μg/mL on DPPH radical and β-carotene decoloration tests, respectively. Moreover, C. gilletii inhibited AChE enzyme with an IC50 value of 105.6 μg/mL.

scholarly journals Contents of constituents and antioxidant activity of seed and pulp extracts of Annona coriacea and Annona sylvatica

2015 ◽  
Vol 75 (3) ◽  
pp. 685-691 ◽  
Author(s):  
RSR. Benites ◽  
ASN. Formagio ◽  
EJS. Argandoña ◽  
CRF. Volobuff ◽  
LNF. Trevizan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Free Radical ◽  
Radical Scavenging Activity ◽  
Condensed Tannin ◽  
Radical Scavenging ◽  
Total Phenol ◽  
Extract Content ◽  
Bleaching Test ◽  
Β Carotene

AbstractThe antioxidant potential of fruit pulp and seeds of extracts of the Annona coriacea, and A. sylvatica(Annonaceae) were investigated, as well contents total phenolics, flavonoids, condensed tannins and ascorbic acid. Was used to determine the antioxidant activity the 1,1-diphenyl-1-picrylhydrazyl free radical (DPPH), β-carotene bleaching and ABTS radical cation method. The total phenol, total flavonoid, condensed tannin, and ascorbic acid contents were measured spectrophotometrically. In this study, the pulp and seeds of the fruits were extracted using methanol/water (8:2) for maceration. The seed extracts of A. coriacea demonstrated a moderate antioxidant effect with free radical scavenging activity of 31.53%, by the DPPH test, 51.59% by the β-carotene bleaching test and 159.50 µM trolx/g of extract in the ABTS assay. We found that the hydromethanolic seed extract of A. coriacea had high total phenol (147.08 ± 4.20 mg of GAE/g of extract) and flavonoid (131.18 ± 2.31 mg of QE/g of extract) content. This indicated that the antioxidant activity of the extracts was related to the contents of these constituents.

scholarly journals Potential of β-carotene as anti-aging serum: A narrative review

2021 ◽  
Vol 12 (3) ◽  
pp. 1999-2004
Author(s):  
Nadhiya Nurfitra Rahmah ◽  
Nabilla Dira Tama ◽  
Nenis Rahma Wulandari ◽  
Waras Nurcholis
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
The Body ◽  
Premature Aging ◽  
Literature Study ◽  
Natural Sources ◽  
Antioxidant Mechanism ◽  
Low Concentrations ◽  
High Antioxidant Activity ◽  
Β Carotene

β-Carotene is known to have antioxidant activity, the ability to scavenge free radicals and reduce oxidative stress that occurs in the body. However, researchers have paid a little attention to the potential of β-Carotene as an anti-aging agent. The aim of this study was to describe the potential of β-Carotene from natural sources as anti-aging agent via antioxidant mechanism. Literature study was conducted on 28 publications associated with natural sources of β-Carotene, mechanism of anti-aging and antioxidant in the body. The results showed that the best antioxidant activity of β-carotene in scavenging free radicals was at low concentrations while taking into account antioxidant activity, dose, and half-life. UV exposure and air pollution can be a source of free radicals that cause aging of the skin. High antioxidant activity of β-carotene has the potential as anti-aging agent in the form of a beauty serum to treat premature aging of the skin.

Antioxidant and Nutrition Facts of Pittosporoposis kerrii Craib

2016 ◽  
Vol 848 ◽  
pp. 85-88
Author(s):  
Natthiya Chaichana
Keyword(s):  
Sustainable Development ◽  
Antioxidant Activity ◽  
Dry Weight ◽  
Seed Extract ◽  
Crude Fiber ◽  
Assay Method ◽  
Dpph Assay ◽  
Seed Extraction ◽  
High Antioxidant Activity

Pittosporoposis kerrii Craib is the consumed plant of Maechaedee Subdistrict, Wiang Pa Pao District, Chiang Rai Province. The area of survey is households that plant P. kerrii Craib for consuming and selling with the highest number of 200 trees per household. Therefore, this plant is increasingly interested in evaluation of the useful consumption. The purpose of this study was to investigate antioxidant and nutrition facts of P. kerrii Craib. For nutrition facts per 100 g dry weight, the result revealed that P. kerrii Craib seed extraction contained 2.70 g of protein, 37.79 g of carbohydrate, 1.83 g of lipid, 1.36 g of crude fiber, 1.20 g of ash and 191.4 kcal of energy. The contents of vitamins were examined. It was found that P. kerrii Craib seeds contained vitamins B1 and B2 (0.018 and 0.092 mg per 100 g dry weight, respectively). Antioxidant was determined by DPPH assay method. The results showed that P. kerrii Craib seed extract had the extremely high antioxidant activity (91.20% inhibition). The experiment exposed that P. kerrii Craib seeds provided the useful consumption and should be promoted to support local economic for sustainable development.

scholarly journals Antioxidant Properties, γ-Aminobutyric Acid (GABA) Content, and Physicochemical Characteristics of Tomato Cultivars

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1204
Author(s):  
Shimeles Tilahun ◽  
Han-Ryul Choi ◽  
Min-Woo Baek ◽  
Lee-Hee Cheol ◽  
Ki-Wung Kwak ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Total Phenolics ◽  
Tomato Fruit ◽  
Physicochemical Characteristics ◽  
The Other ◽  
Aminobutyric Acid ◽  
Gaba Content ◽  
Tomato Cultivars ◽  
Β Carotene

Tomatoes are rich in secondary metabolites such as lycopene, β-carotene, phenolics, flavonoids, and vitamin C, which are responsible for their antioxidant activates. A high level of γ-Aminobutyric acid (GABA), a health-promoting functional compound, was also found to accumulate in tomato fruit. In addition to the internal quality attributes, the acceptance of the tomato fruit by consumers is highly dependent on appearance and taste. Hence, we conducted this study to evaluate ‘Tori’, ‘TY VIP’, ‘Mamirio’, and ‘Arya’ tomato cultivars based on their physicochemical characteristics, contents of secondary metabolites, and GABA content. The results have revealed that the tested cultivars were very firm, which renders them the best choice for postharvest distribution of fresh market tomatoes as they resist impacts during harvesting and postharvest operations. Based on total soluble solids (TSS), titratable acidity (TA), and Brix acid ratio (BAR) the choice of cultivar could be ‘Mamirio’ > ’Tori’ > ‘TY VIP’ > ‘Arya’. Apart from flavor intensity, ‘Mamirio’ and ’Tori’ also revealed the highest content of ascorbic acid while ‘Mamirio’ and ‘Arya’ had the highest carotenoids (lycopene and β-carotene) accumulation. On the other hand, the highest total phenolics content was recorded from ‘TY VIP’ and ‘Arya’. Moreover, the highest total flavonoids and GABA contents were recorded from ‘TY VIP’. Nevertheless, the antioxidant activity of ‘TY VIP’ was the lowest of all tested cultivars while the highest was recorded from ‘Mamirio’. Taken together, the findings of the present study could suggest that the consumers’ requirements could be better fulfilled by choosing cultivars for the specific target functional compounds. From the tested cultivars, if the target is ascorbic acid, carotenoids, and antioxidant activity then ‘Mamirio’ is the best choice. On the other hand, if the target is total phenolics, flavonoids, and GABA then ‘TY VIP’ is the best choice. One could also label ‘Mamirio’ as an ‘antioxidant tomato’ and ‘TY VIP’ as the ‘GABA tomato’.

scholarly journals Impact of Different Packaging Systems on Selected Antioxidant Properties of Frozen-Stored Broccoli

2019 ◽  
Vol 26 (2) ◽  
pp. 383-396
Author(s):  
Joanna Kapusta-Duch ◽  
Teresa Leszczyńska ◽  
Barbara Borczak ◽  
Adam Florkiewicz ◽  
Anna Ambroszczyk
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Nutritive Value ◽  
Antioxidant Properties ◽  
Quality Parameters ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Total Polyphenols ◽  
High Antioxidant Activity ◽  
Β Carotene

Abstract Broccoli has a very good nutritive value, high antioxidant activity and pro-healthy potential. Freezing is one of best methods for vegetable storage and broccoli belongs to the group of vegetables subjected to this process on an industrial scale. This work investigates the effect of type of container: low density polyethylene (PE-LD) bags and oriented polystyrene (OPS) boxes on selected quality parameters in frozen broccoli. The experimental material was the broccoli cultivar LordF1. The vegetable was subjected to blanching, freezing and 3-month storage. At the every stage of an experiment the material was examined in terms of: vitamin C content; β-carotene; total polyphenols; and antioxidant potential, which was determined basing on the ability to quench the ABTS˙+ free radical. It has been found that vegetables which were kept frozen for 3 months in two types of container had parallel levels of vitamin C, β-carotene; total polyphenols; and similar antioxidative potential.

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