scholarly journals Total phenol content of different varieties of brinjal (Solanum melongena L.) and potato (Solanum tuberosum L.) growing in Bangladesh

2013 ◽  
Vol 42 (1) ◽  
pp. 175-177
Author(s):  
Nazma Shaheen ◽  
Ali Abbas Mohammad Kurshed ◽  
Kazi Muhammad Rezaul Karim ◽  
Md Mohiduzzaman ◽  
Cadi Parvin Banu ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
Solanum Melongena ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Fresh Weight ◽  
Dietary Antioxidant ◽  
Significant Difference ◽  
High Yielding Varieties

The total phenol content (TPC) of different varieties of Solanum melongena L. varied from 3.16 ± 0.04 - 7.86 ± 0.33 mg GAE/g of fresh weight (FW). It also revealed that all varieties of Solanum tuberosum L. with peel contained higher TPC than without peel. Comparison between mean TPC of different varieties Solanum tuberosum L. with and without peel on FW basis by independent sample the t-test showed a significant difference (p = 0.003) in TPC. Findings of present study indicate that BARI Begun-8, high yielding varieties of Solanum melongena and Solanum tuberosum with peel are good sources of polyphenols and therefore may contribute as a source of dietary antioxidant. DOI: http://dx.doi.org/10.3329/bjb.v42i1.15909 Bangladesh J. Bot. 42(1): 175-177, 2013 (June)

scholarly journals Induction of systemic resistance (ISR) against sheath blight of rice caused by Rhizoctonia solani Kuhn using biological seed treatment with Trichoderma

2017 ◽  
Vol 9 (3) ◽  
pp. 1861-1865 ◽  
Author(s):  
K. K. Sharma
Keyword(s):  
Rhizoctonia Solani ◽  
Hyphal Growth ◽  
Sheath Blight ◽  
Total Phenol ◽  
Systemic Resistance ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Sheath Blight Disease ◽  
High Yielding Varieties ◽  
Almost All

Sheath blight caused by Rhizoctonia solani Kuhn has recently noticed one of the most important diseases of rice on almost all the high yielding varieties in major rice growing area. In our study morphologically and molecu-larly characterized thirty rhizospheric isolates of Trichoderma (T. harzianum and T. virens) from different locations of Uttarakhand were evaluated for their mycoparasitic ability, disease (sheath blight) suppressing potential and inducing systemic resistance against Rhizoctonia solani. Maximum inhibition in hyphal growth (58.9 %) against R. solani was recorded with isolate PB 2 followed by PB 3 (53.4 %) in confrontation assay. Under glass house con-dition, minimum disease severity (13.6%) was recorded in the treatment where seeds were treated with PB 22 and this treatment also exhibited highest total phenol content (394 μl/g) 168 hours after pathogen inoculation. Total phenol content was also increased maximally (466 μl/g) before pathogen inoculation in the treatment where seeds were treated with PB 22. Moreover, high quality ISR activity was recorded with isolates PB 21, 3, 1, 4, 23, 2 and 16 as they reduced more than 34 percent disease and total phenol contents 456 μl/g, 449 μl/g, 442 μl/g, 440 μl/g and 440 μl/g, 438 μl/g and 431 μl/g were recorded for respective isolates indicated induction of resistance in paddy against sheath blight disease caused by R. solani.

scholarly journals Biochemical Differences between Bolted and Non-Bolted Onions

2020 ◽  
pp. 30-35
Author(s):  
Kalyani Gorrepati ◽  
A. Thangasamy ◽  
Ashok Kumar ◽  
Prashant Satpute ◽  
Major Singh
Keyword(s):  
Solid Content ◽  
Total Phenol ◽  
Soluble Solids ◽  
Soluble Solid Content ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Flavonoid Content ◽  
White Variety ◽  
Significant Difference ◽  
Soluble Solid

The present experiment was conducted to know the biochemical differences between bolted and non-bolted onion of Indian varieties. Onion is a very important vegetable consumed for its flavour and health benefits. Bolting, which is an undesirable character in onion bulb production, produces bulbs with central hard and hollow cellulosic stalk and makes them unmarketable. In this research four different varieties of onion (three red onion varieties (viz; Bhima Kiran; Bhima Shakti; N-2-4-1) and one white variety (Bhima Shweta)) were studied to verify differences between bolted and non-bolted bulbs. The results showed significant difference in total soluble solids and total phenol content in bolted and non-bolted onions. In bolted onion bulbs, total soluble solid content varied from 11.2 to 11.83 °Brix and 12.0 to 12.9 °Brix in non-bolted onion varieties. In bolted onion, the total phenol content was 27.0, 52.2, 61.3 and 65.8 mg GAE/100 g in Bhima Shweta, Bhima Kiran, N-2-4-1 and Bhima Shakti respectively. The phenol content varied from 26.2 to 48.7 mg GAE/100 g in non-bolted onion with lowest in Bhima Shweta and highest in N-2-4-1. No significant difference was observed for moisture content and total flavonoid content in bolted and non-bolted onion. 

scholarly journals Total Phenol Content and Antioxidant Activity of Different Celta Pig Carcass Locations as Affected by the Finishing Diet (Chestnuts or Commercial Feed)

Antioxidants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 5
Author(s):  
Noemí Echegaray ◽  
Paulo E. S. Munekata ◽  
Juan A. Centeno ◽  
Rubén Domínguez ◽  
Mirian Pateiro ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Biceps Femoris ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Fresh Weight ◽  
Frap Assay ◽  
Commercial Feed

The objective of this research was to evaluate the total phenol content, total flavonoids, and antioxidant activity of chestnuts (Castanea sativa Mill.) and commercial feed employed in the finishing diet of the Celta pig breed and analyze the effect of the feeding (chestnuts vs. commercial feed) in the finishing diet on total phenol content and antioxidant activity of Longissimus thoracis et lumborum, Psoas major, and Biceps femoris muscles and liver of the Celta pig breed. The antioxidant activity of the feed and animal tissue was investigated using three antioxidant methods (2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, 2-2′-Azino-di-[3-ethylbenzthiazoline sulfonate] (ABTS) radical scavenging activity, and ferric reducing antioxidant power (FRAP) assay). The determination of the total phenol content and total flavonoids showed that chestnut had a significantly lower concentration than commercial feed in these compounds (130.00 vs. 312.89 mg gallic acid equivalents/100 g fresh weight and 8.58 vs. 32.18 mg catechin equivalents/100 g fresh weight, respectively). However, the results displayed that chestnuts had a higher antioxidant activity when compared with the commercial feed through the DPPH and ABTS methods (1152.42 vs. 957.33 µg Trolox equivalents/g fresh weight, and 9379.74 vs. 7613.44 µg Trolox equivalents/g fresh weight, for DPPH and ABTS assay, respectively), while the antioxidant activity measured by the FRAP assay turned out to show higher values for commercial feed (1777.49 and 1946.09 µmol Fe2+/100 fresh weight for chestnut and commercial feed, respectively), although significant differences were only found in the ABTS assay. On the other hand, the present study found that chestnut significantly reduces the total phenol content and declines the antioxidant activity of Longissimus thoracis et lumborum, Psoas major, and Biceps femoris muscles and liver of the Celta pig breed. Finally, it has been found that liver is the location that has the best antioxidant characteristics compared to any muscle, regardless of diet utilized.

Evaluation of virgin olive oil bitterness by total phenol content analysis

2007 ◽  
Vol 109 (3) ◽  
pp. 193-197 ◽  
Author(s):  
Gabriel Beltrán ◽  
María T. Ruano ◽  
Antonio Jiménez ◽  
Marino Uceda ◽  
María P. Aguilera
Keyword(s):  
Content Analysis ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Phenol Content

scholarly journals Total Phenol Content and Antimicrobial Activity of Lingonberry (Vaccinium vitis-idaea L.) from Several Areas in the Eastern Carpathians

2017 ◽  
Vol 9 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Éva LASLO ◽  
Zoltán Attila KÖBÖLKUTI
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Effect ◽  
Bioactive Compound ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Eastern Carpathians ◽  
Spoilage Bacteria ◽  
New Perspective ◽  
Similar Growth

This study evaluated the antimicrobial activity and the total phenol content of Vaccinium vitis idaea L. berry fruit from five different localities with distinct growth sites in the Eastern Carpathians. The antibacterial effect of lingonberry was studied on nine selected Gram-positive and negative, foodborne, illness causing and spoilage bacteria. The total phenol content was estimated by the Folin-Ciocalteu method. The present results showed stronger antibacterial effect of lingonberry on Gram-negative bacteria, especially on Pseudomonas fluorescens and Pseudomonas aeruginosa. The total phenol content varied between 3.72 and 2.1 mM GAE/ml. As data suggested, Vaccinium vitis-idaea fruits originating from different geographic regions and environment, differ from each other in terms of bioactive compound quantity and activity. In the selection of new perspective cultivars of lingonberry, the geographical origin of fruits must be considered. Two Step Cluster analysis detected relatively well supported relationship between samples provided from similar growth sites. Correlation analysis showed no correlation between altitude, phenol content and antimicrobial activity.

scholarly journals Antioxidant activity and total phenolic content in Caulerpa filiformis (Chlorophyta) from Sechura Bay and Paracas Bay, Peru

2020 ◽  
Vol 27 (1) ◽  
pp. 061-066 ◽  
Author(s):  
Joyce Mamani ◽  
Jorge Chávez ◽  
Eder Apumayta ◽  
Patricia Gil-Kodaka
Keyword(s):  
Antioxidant Activity ◽  
Secondary Metabolites ◽  
Methanolic Extract ◽  
Total Phenol ◽  
North Coast ◽  
Total Phenolic ◽  
Total Phenol Content ◽  
Phytochemical Screening ◽  
Phenol Content ◽  
The North

In Peru, Caulerpa filiformis is a marine algae listed as an invasive species. For years, its distribution has been considered to be in the north coast (Isla Lobos de Afuera and Piura) until a recent report of its distribution in the central coast (Ancash, Lima, and Ica). The present investigation aims to determine the main groups of secondary metabolites, total phenol content, and antioxidant activity of the methanolic extract of C. filiformis from Sechura Bay (Piura) and Paracas Bay (Ica). The main chemical groups were determined through phytochemical screening, the content of phenols by the Folin–Ciocalteu method, and antioxidant activity by the ABTS method (2,2-azinobis-[3-ethylbenzothiazoline-6-sulfonic acid]) and 2,2′-diphenyl-1-picrylhydrazyl (DPPH). The phytochemical screening of the methanolic extract of C. filiformis from Sechura Bay and Paracas Bay revealed the presence of carbohydrates, polyphenols, tannins, flavonoids, lipids, alkaloids, steroids, and triterpenes for both extracts. The total phenol content of the extract of C. filiformis from Sechura Bay (39.31 ± 0.39 mg of AGE/g extract) was significantly higher (p < 0.05) than that from Paracas Bay (18.78 ± 0.31 mg of AGE/g extract). In the ABTS and DPPH assays, the antioxidant capacity of the Sechura C. filiformis extract (IC50 = 3.49 ± 0.01 and 2.18 ± 0.02 mg/mL) was significantly higher (p < 0.05) than that of the Paracas C. filiformis extract (IC50 = 6.41 ± 0.02 and 2.42 ± 0.04 mg /mL). These findings suggest that the methanolic extract of C. filiformis is a source of secondary metabolites with an antioxidant potential.

scholarly journals Prediction of Total Phenolic Content in Extracts of Prunella Species from HPLC Profiles by Multivariate Calibration

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Saliha Sahin ◽  
Esra Isik ◽  
Cevdet Demir
Keyword(s):  
High Performance ◽  
Multivariate Calibration ◽  
Principal Component Regression ◽  
Principal Component ◽  
Total Phenol ◽  
Total Phenolic ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Calibration Methods ◽  
Hplc Profiles

The multivariate calibration methods—principal component regression (PCR) and partial least squares (PLSs)—were employed for the prediction of total phenol contents of four Prunella species. High performance liquid chromatography (HPLC) and spectrophotometric approaches were used to determine the total phenol content of the Prunella samples. Several preprocessing techniques such as smoothing, normalization, and column centering were employed to extract the chemically relevant information from the data after alignment with correlation optimized warping (COW). The importance of the preprocessing was investigated by calculating the root mean square error (RMSE) for the calibration set of the total phenol content of Prunella samples. The models developed based on the preprocessed data were able to predict the total phenol content with a precision comparable to that of the reference of the Folin-Ciocalteu method. PLS model seems preferable, because of its predictive and describing abilities and good interpretability of the contribution of compounds to the total phenol content. Multivariate calibration methods were constructed to model the total phenol content of the Prunella samples from the HPLC profiles and indicate peaks responsible for the total phenol content successfully.

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