scholarly journals LED lighting affected the growth and metabolism of eggplant and tomato transplants in a greenhouse

2020 ◽  
Vol 47 (No. 3) ◽  
pp. 150-157
Author(s):  
Renata Wojciechowska ◽  
Anna Kołton ◽  
Olga Długosz-Grochowska ◽  
Edward Kunicki ◽  
Katarzyna Mrowiec ◽  
...  
Keyword(s):  
Radical Scavenging Activity ◽  
Soluble Sugars ◽  
Radical Scavenging ◽  
Solanum Melongena ◽  
Green Light ◽  
Control Group ◽  
Total Phenol Content ◽  
Scavenging Activity ◽  
Led Lighting ◽  
Led Light

Light-emitting diodes (LEDs) were used for the spring greenhouse cultivation of eggplant (Solanum melongena L.) ‘Milar F1’ and tomato (S. lycopersicon L.) ‘Benito F1’ transplants. Seedlings were grown under natural light conditions with the supplemental LED light. A 16-h photoperiod provided plants with a DLI of 12.6 (eggplant) and 9.6 (tomato) mol m2/day. Four supplemental light spectra were tested: L1 (90% red + 10% blue); L2 (80% red + 20% blue); L3 (43% red + 42% blue+15% green) and L4 (56% red + 26% blue + 15% green + 3% UV-A). The PPFD in each LED light treatment was 150 ± 20 µmol/m2·s. Compared to the control plants (without LED lighting), the eggplant transplants had about a 25% larger leaf area and a higher level of total phenol content as well as a higher antiradical scavenging activity under the L1 spectrum. The favourable spectrum for the tomato transplants consisted of red to blue in a ratio of 1 : 1 mixed with a green light (L3) – the leaves were characterised by a higher content of dry matter, soluble sugars, photosynthetic pigments and total phenols; also the radical scavenging activity increased in comparison to the control group. It was shown that the supplemental irradiation of transplants was economically acceptable. 

Investigation of the Anti-cataract and Antioxidant Activities of Cnidoscolus aconitifolius Leaves Extract In vitro

2021 ◽  
pp. 28-38
Author(s):  
Henry Bulama ◽  
Daniel Dahiru ◽  
Joshua Madu
Keyword(s):  
Total Protein ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Control Group ◽  
Scavenging Activity ◽  
Aqueous Fraction ◽  
Cnidoscolus Aconitifolius

Background: Cataract is a major cause of visual impairment and blindness around the world. This study evaluated the in vitro antioxidant and anti-cataract activities of Cnidoscolus aconitifolius leaves extract and fractions. Antioxidant activities were evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azinobis (3-ethylbenzothiozoline-6-sulfonic acid) (ABTS), total reducing power, and hydrogen peroxide scavenging assays. Anti-cataract potential was evaluated in vitro using goat lenses divided into eight groups of different treatments and incubated in artificial aqueous humor at 37 °C for 72 hours. Glucose-induced opacity in the lenses was observed and biochemical indices quantified (catalase, Malondialdehyde (MDA) and total protein in the lens homogenate). Results: The crude extract and its fractions possess substantial antioxidant activities. The aqueous fraction exhibited the best DPPH radical scavenging activity (IC50 value 78.599 µg/ml); while the dichloromethane fraction exhibited the highest ABTS radical scavenging activity with IC50 66.68 µg/ml. The anti-cataract evaluation of crude and fractions at 250 μg/ml showed a significant increase (p<0.05) in the total protein and catalase activity compared to the cataract control group. The malonaldehyde level decreased significantly (p<0.05) in all the treated groups.

scholarly journals Anthocyanin-rich purple potato flake extract has antioxidant capacity and improves antioxidant potential in rats

2006 ◽  
Vol 96 (6) ◽  
pp. 1125-1134 ◽  
Author(s):  
Kyu-Ho Han ◽  
Mitsuo Sekikawa ◽  
Ken-ichiro Shimada ◽  
Makoto Hashimoto ◽  
Naoto Hashimoto ◽  
...  
Keyword(s):  
Linoleic Acid ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Control Group ◽  
Acid Oxidation ◽  
Mrna Levels ◽  
Scavenging Activity ◽  
Potato Flake ◽  
Linoleic Acid Oxidation ◽  
Potato Flakes

Anthocyanins from various vegetables and fruits have antioxidant activities, however, the bioactivities of coloured potato anthocyanins are not well studied. We examined the antioxidant capacities of pigmented fractions from purple potato flakes in vitro, and the antioxidant potentials of purple potato flakes in vivo. 1,1-Diphenyl-2-picrylhydrazyl radical scavenging activity of the pigmented fraction from Hokkai no. 92 (H92) potato flakes was higher than that from Kitamurasaki (KM) potato flakes. Extracts equivalent to 600 μg pigmented fractions from KM and H92 potato flakes inhibited linoleic acid oxidation in the order trolox>H92 ≥ KM>control. Rats were fed 25 % KM or H92 potato flake diets for 4 weeks. The major anthocyanin was identified as petanin. Control rats were fed a diet with cornstarch instead of potato flakes for 4 weeks. The serum antioxidant potential level in the H92 group was significantly higher than that in the control group. The degree of hepatic lipid peroxidation in the H92 group was significantly lower than that in the control group. Hepatic Cu/Zn-superoxide dismutase (SOD), Mn-SOD and glutathione peroxidase (GSH-Px) mRNA levels in the H92 group were significantly higher than those in the control group. Similar significant differences in Cu/Zn-SOD and Mn-SOD mRNA levels between the KM and control groups were found. The present results suggest that purple potato flakes have antioxidant functions with regard to radical scavenging activity and inhibition of linoleic acid oxidation, and that they improve the antioxidant potentials in rats by enhancing hepatic Mn-SOD, Cu/Zn-SOD and GSH-Px mRNA expression.

scholarly journals Evaluating the Effect of Gamma Radiation on the Total Phenolic Content, Flavonoids, and Antioxidant Activity of Dried Pleurotus ostreatus ((Jacq. ex. Fr) Kummer) Stored in Packaging Materials

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Nii Korley Kortei ◽  
George Tawia Odamtten ◽  
Mary Obodai ◽  
Victoria Appiah ◽  
Felicia Akuamoa ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Gamma Radiation ◽  
Pleurotus Ostreatus ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Total Phenol Content ◽  
Scavenging Activity

Dried Pleurotus ostreatus mushrooms stored in polythene and polypropylene packs were exposed to gamma radiation from a cobalt-60 source at doses of 0, 0.5, 1, 1.5, and 2 kGy at a dose rate of 1.7 kGy/hr and stored for a period of 1 month. Total phenolic contents, flavonoids, and free radical scavenging activity DPPH (2,2′-diphenyl-1-picrylhydrazyl) were determined using aqueous, ethanol, and methanol extracts by Folin-Ciocaultaeu method as a source of potential natural antioxidants. Total phenol content ranged 0.56 ± 0.01–10.96 ± 1.7 mg/GAE, flavonoids ranged 1.64 ± 0.05–8.92 ± 0.6 mg/QE, DPPH radical scavenging activity also ranged 7.02 ± 0.10–13.03 ± 0.04%, and IC50 values also ranged 0.08–0.16 mg/mL. Statistical differences (P < 0.05) were recorded for the extracts and the treatment doses of mushrooms stored in polythene and polypropylene packs. A significant linear correlation was confirmed between values for the total phenolic content and antioxidant activity of mushroom extracts. The high contents of phenolic compounds indicated that these compounds contribute to high antioxidant activity. Pleurotus ostreatus can be regarded as a promising candidate for natural mushroom sources of antioxidants with high value. The use of low dose gamma radiation by the local food industry could improve the hygienic quality, extend shelf-life, and preserve nutrients and antinutrients.

scholarly journals Biochemical characterization of pink husked coconut types

2021 ◽  
pp. 72-76
Author(s):  
Regi J. Thomas ◽  
M. Shareefa ◽  
H. Harsha ◽  
Anitha Karun
Keyword(s):  
Biochemical Characterization ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenol Content ◽  
Anthocyanin Content ◽  
Scavenging Activity ◽  
Traditional Medicines ◽  
Ic50 Value ◽  
Morphological Differences

Coconuts with various traits are available in different coconut growing countries. The pink husk is one such trait that has already been reported in coconut. There is a demand for tender nut water from pink husked types of coconut to treat hepatitis by traditional medicinal practitioners. Present studies were carried out to characterize pink husked types identified in Guam Tall variety of coconut. There were no morphological differences with respect to the nut characters between pink and non-pink husked types. Biochemical characterization of pink husked types revealed significantly higher total phenol content in the tender nut water of pink husked types than normal husked types. A significantly higher protein content of 86 mg 100 mL-1 was noted in pink husked type, compared to normal husked type with 58.7 mg 100 mL-1. Higher free radical scavenging activity based on DPPH assay with pink husked type was recorded with an IC50 value of 266.7 compared to normal type with an IC50 value of 358. Similarly, phosphomolybdate assay also revealed higher scavenging activity of pink husked type based on the IC50 value of 415.2 compared to 637.9 observed in normal husked type. Anthocyanin content of 25.98 mg 100g-1 fresh weight was noted in the exocarp of pink husked types, and it was negligible in normal husked type. These results justify the use of pink husked coconuts in various traditional medicines. There is tremendous potential for exploiting pink husked types of coconut in the pharmaceutical industry.

scholarly journals Assessment of Nutritional And Free Radical Scavenging Activity of Selected Genotypes of Cordia Myxa L.: A Potential Underutilized Fruit Crop of Indian Arid Zone

2021 ◽  
Author(s):  
Purkha Ram Meghwal ◽  
Dalpat Singh ◽  
Saurabh Swami ◽  
Akath Singh
Keyword(s):  
Free Radical ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Total Phenol ◽  
Free Radical Scavenging Activity ◽  
Total Phenol Content ◽  
Scavenging Activity ◽  
Phenol Content ◽  
Cordia Myxa

Abstract Cordia myxa is one of the important underutilized fruit plants suitable for arid and semi-arid regions of India having potential for commercial exploitation in vegetable and pickle industry. Fruits of four improved genotypes of Cordia myxa were analyzed for nutritional value, total phenol content and free radical scavenging activity. Acetone extracts from dried fruit samples were prepared to determine total phenol content and free radical scavenging activity using DPPH essay. The fruits harvested at 20 or 30 days after fruit set recorded higher crude fibre and crude protein as compared to at full ripening stage. The total phenol content was found highest in fruits harvested earliest irrespective of genotypes. The correlation coefficient between total phenol content and free radical scavenging activity of fruit extract was found positive and significant. The results suggest that the fruits of Cordia myxa should be harvested at 20 to 30 days after fruit set to get maximum benefits of its anti-oxidant and other nutritional properties.

Effect of mulberry silage supplementation during late fattening stage of Hanwoo (Bos taurus coreanae) steer on antioxidative enzyme activity within the longissimus muscle

2012 ◽  
Vol 52 (4) ◽  
pp. 240 ◽  
Author(s):  
S. H. Cheong ◽  
K. H. Kim ◽  
B. T. Jeon ◽  
P. J. Park ◽  
I. H. Hwang ◽  
...  
Keyword(s):  
Bos Taurus ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Control Group ◽  
Dependent Manner ◽  
Scavenging Activity ◽  
Glutathione S Transferase ◽  
Oxidative Stress Biomarkers ◽  
Fresh Matter ◽  
Feeding Management

This study was conducted to determine the possible application of mulberry silage as a functional feed in the feeding management of Hanwoo, Korean native cattle, for high quality beef production. Twenty Hanwoo steers in the last stage of fattening were randomly assigned to two groups with (MSS) or without (Control) supplemental mulberry silage. The Control group was fed on a standard total mixed commercial ration, while the MSS group was fed on a total mixed commercial ration formulated with mulberry silage at the rate of 10%, fresh matter basis, for 30 days. The mulberry silage contained active ingredients such as 1-deoxynojirimycin, γ-aminobutyric acid, and phenol compounds. In the present study, the oxidative stress biomarkers such as glutathione, superoxide dismutase, glutathione peroxidase, catalase, and glutathione-S-transferase were improved in the MSS group compared with the Control group. Electron spin resonance assays showed that 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity was significantly elevated by 75.5% in the MSS group (P < 0.001). Moreover, the MSS group exhibited stronger scavenging activity against hydroxyl radicals, superoxide radicals, and alkyl radicals, and the radical scavenging activity occurred in a dose-dependent manner. Findings from the present study suggest that mulberry silage may be useful as a functional feed by improving the antioxidant activity against various reactive radicals for beef cattle.

scholarly journals Effect of Hippophae rhamnoides L. Leaves Treatment on the Antioxidant Capacity, Total Phenol Content and Sensory Profile of Moschofilero Wines Vinified with and without Added Sulphites

2020 ◽  
Vol 10 (10) ◽  
pp. 3444
Author(s):  
Alexandros Tzachristas ◽  
Konstantina Pasvanka ◽  
Maria Liouni ◽  
Antony C. Calokerinos ◽  
Panagiotis Tataridis ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenol ◽  
Sensory Profile ◽  
Total Phenol Content ◽  
Scavenging Activity ◽  
Phenol Content ◽  
Color Intensity

This study evaluated the antioxidant capacity, total phenol content, and sensory profile of selected Greek wines made from Vitis vinifera L. c.v. Moschofilero in two consecutive vintages, treated with powdered Hippophae rhamnoides L. leaves (HRL). Radical Scavenging activity, reducing power, total phenol content (TPC), and color intensity increased in a linear manner in relation to HRL treatments. Indicatively the addition of 0.8 g/L of HRL increased the radical scavenging activity as determined via the inhibition of the 2,2-diphenyl-1- picrylhydrazyl (DPPH) radical from 28.4 to 55.8% in comparison to the initial values. Equally the reducing power as determined by the ferric reducing antioxidant power (FRAP) assay increased from 35.3 to 62.1%, and total phenol content values increased from 11% to 23.7% and the color intensity increased from 39.9 to 50.7%. The main oenological attributes examined, remained unchanged after the HRL addition. The addition of up to 0.4 g/L of HRL did not have a major impact on the organoleptic characteristics of the wines tasted whereas concentrations higher than 0.8 g/L were not considered beneficial. Results denote that the addition of H. rhamnoides leaves to white wines contributes positively to the overall antioxidant capacity and could be used if authorized as an antioxidant agent in wines vinified in the absence of or in synergy with sulphur dioxide.

Antioxidant Capacity and Polyphenolic Content of Eucommia Ulmoides Oliv Leaf Extract

2011 ◽  
Vol 396-398 ◽  
pp. 1349-1352
Author(s):  
Jian Hui Wang ◽  
Dong Min Liu ◽  
Yong Le Liu ◽  
Chi Ling Li ◽  
Yuan Yuan Cheng ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenol ◽  
Total Phenolic ◽  
Total Phenol Content ◽  
Scavenging Activity ◽  
Phenol Content ◽  
Dpph Method

This study was designed to determine the polyphenolic contents of Eucommia ulmoicles Oliv leaf extracts and evaluate their antioxidant activities in vitro. All the extracts were evaluated for their radical scavenging activity by the DPPH method and their oxidative-retarding efficiency in vegetable oils. It was observed that the highest values were found in 70% MeOH extracts for total phenolic content as gallic acid. A good correlation between antioxidant activity and total phenol content in the extracts was found. The extraction yield, total phenol content and radical scavenging activity were increased and peroxide formation in vegetable oils were decreased with the graded solvent concentration of MeOH. The phenolic compound yield ranged from 2.45 to 11.35% and the total phenol content increased from 34.51 mg/g to 47.68 mg/g. DPPH scavenging activity increased from 56.32% to 90.37% as MeOH concentration increased. Compared to the control (70.45 meq/kg), 70% MeOH fraction with 47.68 mg/g phenolic compounds shows much stronger antioxidant ability (30.12 meq/kg) in vegetable oil system.

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