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Total polyphenols content
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In our study, the mixture of cellulase and pectinase were used to exploit plant matrix. The combination of these enzymes increased the extraction efficiency compared to single enzyme treatment. The fresh tea leaves, byproduct of the green tea processing, were utilized as materials for extracting. And the enzyme-assisted extraction was investigated. Firstly, the materials were treated with the mixture of cellulase and pectinase.
12p
dianmotminh02
03-05-2024
1
1
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Zoanthid is a potential natural resource with many biological activities, such as antioxidant, antiviral, antiinflammatory, and cytotoxic activity. Therefore, this study aimed to evaluate the antioxidant activity of 70% ethanol crude extract and dichloromethane fraction from Zoanthus vietnamensis. The total polyphenol content of ethanol and dichloromethane extracts were 19.36 ± 1.37 and 24.95 ± 0.63 mg GAE/g extract, respectively.
9p
dianmotminh02
03-05-2024
4
1
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This study aimed to extract and evaluate some properties and the capability of phenolic components from shallot (Allium ascalonicum L.) peels for usage as fish preservative. It was found that shallot peels extracted twice with 70 % ethanol solvent, within 60 minutes, at 60 oC and the ratio of solid/liquid 1/20 (g/mL) gave highest polyphenol and flavonoid yields. Total polyphenol content and total flavonoid content of the extract were 224.34±5.66 mg GAE/g DW and 255.11±4.35 mg QE/g DW, respectively.
9p
dianmotminh02
03-05-2024
4
1
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The objective of this study was to determine some physiological properties (mass ratio, moisture) and biochemical properties (the content of the chlorophyll, carotenoids and The Total Polyphenol (TPC)) of Musa paradisiaca and Musa acuminata AA banana varieties peel, which were harvested in Tien Giang province, Vietnam at 03 stages of ripeness (I, III and VI in the color index 08 ripeness of banana).
8p
vibego
02-02-2024
3
0
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Recently, using peeled cloves of garlics for produce black garlic has been investigated, but the effect of humidity and temperature on antioxidant activity and polyphenol content of black garlic produced from peeled cloves of garlic have not been studied yet.
9p
vimarillynhewson
02-01-2024
3
1
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To investigate the influence of the banana ripening stage on the change in the content of bioactive components and their bioactivities, ripening stages of porcelain banana peels were screened for the total phenolic content (TPC) and antioxidant activities using three methods, including DPPH scavenging assay, ferric reducing/antioxidant power (FRAP) assay, and inhibition of polyphenol oxidase activity (PPO assay).
9p
vimichaelfaraday
28-12-2023
11
3
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The content of total polyphenols, DNA damage protective effect, and antioxidant activity of different solvent extracts including hexane, acetidin (ethyl acetate), acetone, ethanol, and methanol) from Garcinia mangostana pericarp were investigated and compared.
6p
viisac
23-09-2023
2
1
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In the traditional method, the single factor models can be analysed easily but the multifactorial models cannot. To avoid these limitations, the Design Expert 8.0 software was used to analysis the complex multifactorial models.
5p
viisac
23-09-2023
5
0
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The results showed that total solid content, total polyphenol content and DPPH radical activity of extraction solution of roselle calyxes significantly depended on extraction conditions.
6p
vidoctorstrange
06-05-2023
4
1
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This study aimed to investigate the stability of Terminalia nigrovenulosa (T. nigrovenulosa) extract in response to heating treatment and hydrogen peroxide at pH 4 and pH 7. The changes of total polyphenol content, DPPH radical scavenging and reducing power were examined. The obtained results showed that the investigated extract was relatively stable under heating and sterilization condition (pH 4). However, it was unstable at pH 7.
9p
vidoctorstrange
06-05-2023
6
3
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This study screened phytochemicals to determine their total polyphenols content (TPC) by Folin-Ciocalteu reagents and to evaluate antioxidant activity using DPPH scavenging, ABTS cation decolorization, and reducing power assays of various extracts of Symplocos cochinchinensis leaves. A correlation between TPC and antioxidant activity was analysed by Pearson’s method.
6p
vicedric
08-02-2023
4
1
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The commercialization of mushrooms is critical because they have a short shelf life. For this reason, we investigated the effect of agar-agar and egg white protein on weight loss, polyphenol oxidase and catalase, protein content, total phenolics, total antioxidant capacity, respiration rate, ethylene production and storability of button mushrooms. Our findings suggested that the treatment of edible coating delayed remarkably senescence and maintained the quality of button mushroom.
9p
lyhuyenthu
31-01-2023
4
2
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The pomelo peel occupies 50% of the fruit mass in pomelo juice processing. It contains large amounts of phenolic compounds, which may provide benefits to human health. These components should be isolated. In this study, the effects of ethanol concentrations, material-to-solvent ratios (g/mL), temperatures and sonication time on total phenolic content (TPC), naringin content and antioxidant capacity (using DPPH assay) of extract solution was evaluated.
6p
viporsche
25-10-2022
10
3
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Produced from leaves of Camellia sinensis L. (Kuntz), tea is among the most common beverages worldwide. Tea plants have been grown in nearly 30 countries. In this study, the FolinCiocalteu method was applied to determine the total polyphenol contents (referred to milligrams gallic acid mass equivalence or GAE) in tea products (one oolong and three ancient teas, including red, green, and white) based on ISO 14502-1:2005 with some modifications, typically ultrasonicassisted single extraction using methanol:water (7:3 v/v) as an extraction solvent at 70oC with the extraction ratio of 0.200:10.
13p
viericschmid
12-01-2022
11
0
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This study was carried out to produce new herbal beverages from Foeniculum vulgare and Cymbopogon proximus using for inhibiting or preventing calcium oxalate crystals formation. The preliminary chemical composition and phytochemical tests ofF. vulgare andC. proximushave been examined. Also, total polyphenols and total flavonoids contents were determined.
9p
schindler
30-12-2021
11
0
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In this study, Lythrum salicaria plant was tested in hydroponic culture to demonstrate its zinc accumulating capacity and tolerance to different zinc levels. Lythrum salicaria seedlings were grown in 10% Hoagland solution containing 0, 5, 10, 20, 30, 40, 50, 75, and 100 mg/L zinc, and 30 mg/L zinc with different pH levels (5, 6, and 7). Following this, the seedlings were harvested after 1st, 2nd, 4th and 7th days. Zinc caused significant decreases in the relative values of the mean root-shoot length and fresh weight of the plant (92 to 75%; 100 to 92%; 64.2 to 41.
10p
langthannam
29-12-2021
7
0
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The quantitative assays of total polyphenols revealed a richness of the different pomegranate extract in polyphenols, peel and seed ethanol extracts contain the highest values (880.06 ± 11.2 mg GAE/100 g and 1160.1 ± 45.20 mg GAE/100 g, respectively). Flavonoid contents were high in both of acetone, ethanol extracts of peel, followed by ethanol, and acetone extracts of juice.
7p
mudbound
10-12-2021
13
1
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Regarding the content of total polyphenols, the maximum average value obtained was 477 g Eq g-1 for rice from both countries and the best results for antioxidant activity, using the Photoquem® method with methanolic extract, was 3.43 µM Eq Trolox g-1 for the Italian rice samples. These results indicate that the technological processes influence the nutritional and functional quality of rice grain from these countries.
6p
mudbound
10-12-2021
13
1
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The formulations of the coatings with and without the addition of propolis had a significant (p ≤ 0.05) effect on the variation of fruit weight. The propolis coating showed greater stability in the vitamin C content and pH levels, up to the 10th day of cold storage, in comparison to the samples with starch coating and the control. The treatments (MS, MSP and MC) did not significantly influence (p > 0.05) the color and the content of total polyphenols.
5p
mudbound
10-12-2021
9
1
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The interest has been increasing on the phenolic compounds in plants because of their nutritive function as food and the roles regulating plant growth. However, their underlying genetic mechanism in barley is still not clear.
10p
vibeauty
23-10-2021
16
1
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