scholarly journals Bioactive Pectin-Murta (Ugni molinae T.) Seed Extract Films Reinforced with Chitin Fibers

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7477
Author(s):  
Gustavo Cabrera-Barjas ◽  
Aleksandra Nesic ◽  
Gaston Bravo-Arrepol ◽  
Saddys Rodríguez-Llamazares ◽  
Oscar Valdés ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Seed Extract ◽  
Mechanical Resistance ◽  
Chitin Nanofiber ◽  
Polyphenolic Extract ◽  
Morphology Of Films ◽  
Film Formulation ◽  
Ugni Molinae ◽  
Potential Use ◽  
Chitin Nanofibers

This study investigated the biocomposite pectin films enriched with murta (Ugni molinae T.) seed polyphenolic extract and reinforced by chitin nanofiber. The structural, morphological, mechanical, barrier, colorimetric, and antioxidant activity of films were evaluated. The obtained data clearly demonstrated that the addition of murta seed extract and the high load of chitin nanofibers (50%) provided more cohesive and dense morphology of films and improved the mechanical resistance and water vapor barrier in comparison to the control pectin film. The antioxidant activity ranged between 71% and 86%, depending on the film formulation and concentration of chitin nanofibers. The presented results highlight the potential use of chitin nanofibers and murta seed extract in the pectin matrix to be applied in functional food coatings and packaging, as a sustainable solution.

Antioxidant Activity, Phenolic Content and Hematoprotective Effects of Cleome arabica Polyphenolic Leaf Extract

2019 ◽  
Author(s):  
C. Tigrine ◽  
A. Kameli
Keyword(s):  
Antioxidant Activity ◽  
Biological Effects ◽  
Reducing Power ◽  
Hematological Toxicity ◽  
Protective Effects ◽  
Ferrous Ions ◽  
Polyphenolic Extract ◽  
Cleome Arabica

In this study a polyphenolic extract from Cleome arabica leaves (CALE) was investigated for its antioxidant activity in vitro using DPPH•, metal chelating and reducing power methods and for its protective effects against AraC-induced hematological toxicity in vivo using Balb C mice. Results indicated that CALE exhibited a strong and dose-dependent scavenging activity against the DPPH• free radical (IC50 = 4.88 μg/ml) and a high reducing power activity (EC50 = 4.85 μg/ml). Furthermore, it showed a good chelating effects against ferrous ions (IC50 = 377.75 μg/ml). The analysis of blood showed that subcutaneous injection of AraC (50 mg/kg) to mice during three consecutive days caused a significant myelosupression (P < 0.05). The combination of CALE and AraC protected blood cells from a veritable toxicity. Where, the number of the red cells, the amount of hemoglobin and the percentage of the hematocrite were significantly high. On the other hand, AraC cause an elevation of body temperature (39 °C) in mice. However, the temperature of the group treated with CALE and AraC remained normal and did not exceed 37.5 °C. The observed biological effects of CALE, in vitro as well as in vivo, could be due to the high polyphenol and flavonoid contents. In addition, the antioxidant activity of CALE suggested to be responsible for its hematoprotective effect.

Melatonin Content and Antioxidant Activity of Platycodon grandiflorum Seed Extract

2018 ◽  
Vol 47 (9) ◽  
pp. 876-884
Author(s):  
Hyeryeon Woo ◽  
Yangji Kim ◽  
Yoon Lee ◽  
In-Ho Kim ◽  
Seok Joong Kim
Keyword(s):  
Antioxidant Activity ◽  
Seed Extract ◽  
Platycodon Grandiflorum

The effects of grape seed extract fortification on the antioxidant activity and quality attributes of bread

2010 ◽  
Vol 119 (1) ◽  
pp. 49-53 ◽  
Author(s):  
Xiaofang Peng ◽  
Jinyu Ma ◽  
Ka-Wing Cheng ◽  
Yue Jiang ◽  
Feng Chen ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Quality Attributes ◽  
Seed Extract

ANTIOXIDANT ACTIVITY OF ALMOND SEED EXTRACT AND ITS FRACTIONS

2005 ◽  
Vol 12 (4) ◽  
pp. 344-358 ◽  
Author(s):  
RYSZARD AMAROWICZ ◽  
AGNIESZKA TROSZYNSKA ◽  
FEREIDOON SHAHIDI
Keyword(s):  
Antioxidant Activity ◽  
Seed Extract

scholarly journals ANTIDIABETIC AND ANTIHYPERLIPIDAEMIC ACTIVITY OF NELUMBO NUCIFERA GAERTN ETHANOL SEED EXTRACT IN STREPTOZOTOCIN INDUCED DIABETIC RATS

2017 ◽  
Vol 9 (10) ◽  
pp. 197
Author(s):  
Alok Bhardwaj ◽  
Ketan. P. Modi
Keyword(s):  
Antioxidant Activity ◽  
Blood Glucose ◽  
Lipid Peroxides ◽  
Ethanol Extract ◽  
Diabetic Rats ◽  
Seed Extract ◽  
Serum Enzymes ◽  
Nelumbo Nucifera ◽  
Albino Rats ◽  
Intraperitoneal Dose

Objective: The main objective of the study was to investigate the effect of ethanol seed extracts of Nelumbo nucifera Gaertn (Nymphaeaceae) as antihyperglycemic, anti-hyperlipidemic and antioxidant activity in streptozotocin-induced diabetic rats.Methods: Diabetes was induced in wistar albino rats by administration of streptozotocin (single intraperitoneal dose of 60 mg/kg B. W). The ethanol extract of N. nucifera seed at a dose of 200 and 400 mg/kg body weight was administrated at a single dose per day to STZ induced diabetic rats for a period of 42 d. The different pharmacological parameters were evaluated. The effect of ethanol seed extract of N. nucifera on insulin, blood glucose, urea, creatinine, HbA1C, serum protein, albumin, globulin, serum enzymes, serum lipid profiles, lipid peroxides (LPO) and other antioxidant enzymes like catalase (CAT), glutathione peroxidase (GPx), superoxide dismutase (SOD) and reduced glutathione (GSH) were measured in the diabetic rats.Results: In the acute toxicity study ethanol seed extract of Nelumbo nucifera were non-toxic at 2000 mg/kg in rats. The ethanol extract of Nelumbo nucifera seed showed significant reduction in blood glucose (p<0.05), serum enzymes (SGPT, SGOT, ALP) (p<0.05), lipid parameters (TC, TG, VLDL, LDL) (p<0.05) except HDL and significantly increased insulin (p<0.05), HDL (p<0.05), GPx, GSH, SOD and CAT (p<0.05) at the dose of 400 mg/kg when compared with the diabetic-induced control.Conclusion: The present study suggested that the NNSE has significant (p<0.05) antihyperglycemic, antihyperlipidemic and antioxidant activity in STZ induced diabetic rats. These results clearly indicate that Nelumbo nucifera is effective against free radical-mediated diseases, thus replacing the synthetic ones.

scholarly journals Effect of Moringa oleifera seed extract on antioxidant activity and sperm characteristics in cryopreserved ram semen

2020 ◽  
Vol 48 (1) ◽  
pp. 114-120
Author(s):  
José Maria Carrera-Chávez ◽  
Edson Eduardo Jiménez-Aguilar ◽  
Theisy Patricia Acosta-Pérez ◽  
José Alberto Núñez-Gastélum ◽  
Andrés Quezada-Casasola ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Moringa Oleifera ◽  
Seed Extract ◽  
Sperm Characteristics ◽  
Moringa Oleifera Seed

scholarly journals Antioxidant Activity and Acteoside Analysis of Abeliophyllum distichum

Antioxidants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1148 ◽  
Author(s):  
Hak-Dong Lee ◽  
Ji Hyun Kim ◽  
Qi Qi Pang ◽  
Pil-Mun Jung ◽  
Eun Ju Cho ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidative Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Nutritional Supplements ◽  
Scavenging Activity ◽  
Antioxidant Agent ◽  
Abeliophyllum Distichum ◽  
Potential Use

This study determined acteoside and its content in Abeliophyllum distichum via HPLC/UV and LC/ESI-MS to obtain insights into the potential use of this plant as an antioxidant agent. Moreover, 1,1-diphenyl-2-picrylhydrazyl (DPPH), hydroxyl (•OH), and O2− radical scavenging activity assays were performed to assess in vitro antioxidative activity. The DPPH, •OH, and O2− radical scavenging activities of A. distichum leaf EtOH extracts at a 250 μg/mL concentration were 88.32%, 94.48%, and 14.36%, respectively, whereas those of stem extracts at the same concentration were 88.15%, 88.99%, and 15.36%, respectively. The contents of acteoside in A. distichum leaves and stems were 162.11 and 29.68 mg/g, respectively. Acteoside was identified as the main antioxidant compound in A. distichum leaves, which resulted in DPPH, •OH, and O2− radical scavenging activities of 82.84%, 89.46%, and 30.31%, respectively, at a 25 μg/mL concentration. These results indicate that A. distichum leaves and stems containing the antioxidant acteoside can be used as natural ingredients for functional and nutritional supplements.

scholarly journals Pharmacological and Genotoxic Properties of Polyphenolic Extracts ofCedrela odorataL. andJuglans regiaL. Barks in Rodents

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Dulce Carolina Almonte-Flores ◽  
Norma Paniagua-Castro ◽  
Gerardo Escalona-Cardoso ◽  
Martha Rosales-Castro
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Comet Assay ◽  
Juglans Regia ◽  
Control Group ◽  
Cedrela Odorata ◽  
Hepatic Lipid ◽  
Polyphenolic Extract ◽  
Hepatic Lipid Peroxidation

Evaluation of the phenolic compounds and antioxidant activity ofCedrela odorataL. andJuglans regiaL. bark extracts was performedin vitro.Juglans regiashowed greater extract concentration and higher antioxidant activity. Hypoglycemic activity in rats was assessed by generating a glucose tolerance curve and determining the area under the curve (AUC). Diabetes was later induced by an injection with streptozotocin (65 mg/kg of b.w.) and confirmed after 24 hours. The extract was administered (200 mg/kg b.w.) over 10 days, and blood glucose was monitored and compared with a control group. The glucose AUC showed a hypoglycemic effect ofJ. regiaandC. odoratain normal rats. Both extracts reduced hepatic lipid peroxidation in diabetic rats. Polyphenolic extracts reduced cholesterol levels in a hypercholesterolemic mouse model and decreased hepatic lipid peroxidation. Polyphenolic extract doses of 100 and 200 mg/kg b.w. were administered alone or with cyclophosphamide (CPA) 50 mg/kg ip, which was used as a positive control. Analyses were performed using leukocytes in a comet assay after 4 and 24 h of treatment. Genotoxic effects were evaluated by the comet assay, which showed that whileJ. regiaextract had no effect,C. odorataextract induced slight damage at 200 mg/kg, with the formation of type 0 and 1 comets.

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