Sunflower Oil Stabilization by Persian Walnut Leaves Extract during Oven Storage Test

Mirzapour, Mojgan; Hamedi, M.; Rahimipanah, Maryam

doi:10.3136/fstr.16.443

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…1. To remove the methanol, the mixture was concentrated by a rotary evaporator (LABOROTA 4000) at 35°C, and the extract was eventually dried under vacuum in a drier at 40°C and kept in a closed impermeable container at 4°C until further use [17].…”

Section: Preparation Of the Extract Of C Dactylon Rhizomementioning

confidence: 99%

Phytochemical Analysis and Antimicrobial/Antioxidant Activity ofCynodon dactylon(L.) Pers. Rhizome Methanolic Extract

Savadi

Vazifedoost

Didar

et al. 2020

Journal of Food Quality

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A proper use of medicinal plants requires accurate scientific information and understanding of their chemical constituents. The therapeutic effects in the plants are due to the chemical compounds therein. Cynodon dactylon (L.) Pers. of the family Poaceae is a perennial, pan-tropical species of grass which is a well-known traditional medicine and has a renowned position for treatment of many symptoms and diseases. The chemical composition, free radical scavenging activity, and antimicrobial properties of the methanolic extract of C. dactylon rhizomes against selected bacterial and fungal strains were investigated using disk-diffusion method. The results indicated that the major fatty acid structures of C. dactylon methanolic extract were palmitic acid (36.40%), oleic acid (28.26%), and linoleic acid (17.01%). Alpha-tocopherol (151.39 mg·kg−1) and sitosterol (3199.62 mg·kg−1) were the main tocopherols and sterols, respectively. According to the instrumental analysis, the total phenolic compounds of methanolic extract were equal to 917.08 mg·kg−1 and the main compound was hydroquinone (66.89%). Antioxidant activity of the methanolic extract at concentrations of 100–1000 ppm was 9.81–67.87%, which is significantly different from the 200 ppm synthetic antioxidant (BHT) with free radical scavenging activity equal to 48.93% (p<0.05). The antimicrobial study revealed that the methanolic extract of C. dactylon rhizomes was effective against all of the bacterial pathogens and the antibacterial activity increased with an increase in the concentration of extract. Therefore, the largest zone of inhibition was observed against Bacillus cereus (18.3 ± 0.4 mm) and Escherichia coli (16.8 ± 0.5 mm) at 1000 ppm. The highest resistance was observed with Pseudomonas aeruginosa (inhibition zone of 12.8 ± 0.15 mm). Methanolic extract at 200 ppm had no effect against fungus Aspergillus niger. However, at 1000 ppm concentration, an inhibition zone with a diameter of 14.4 ± 0.45 mm was formed.

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Section: Preparation Of the Extract Of C Dactylon Rhizomementioning

confidence: 99%

Phytochemical Analysis and Antimicrobial/Antioxidant Activity ofCynodon dactylon(L.) Pers. Rhizome Methanolic Extract

Savadi

Vazifedoost

Didar

et al. 2020

Journal of Food Quality

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“…A domestic microwave oven (CE3260F CE3260FS) was used in this study. The suspensions were placed in microwave oven and heated according to the method proposed by Mirzapour et al (2010). Time (X 1 ) and liquid/ solid ratio (X 2 ) were independent variables while phenolic compounds contents and extraction yield were dependent variables.…”

Section: Microwave-assisted Extractionmentioning

confidence: 99%

Optimization of microwave assisted extraction (MAE) and soxhlet extraction of phenolic compound from licorice root

et al. 2014

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In present study, response surface methodology was used to optimize extraction condition of phenolic compounds from licorice root by microwave application. Investigated factors were solvent (ethanol 80 %, methanol 80 % and water), liquid/solid ratio (10:1-25:1) and time (2-6 min). Experiments were designed according to the central composite rotatable design. The results showed that extraction conditions had significant effect on the extraction yield of phenolic compounds and antioxidant capacities. Optimal condition in microwave assisted method were ethanol 80 % as solvent, extraction time of 5-6 min and liquid/solid ratio of 12.7/1. Results were compared with those obtained by soxhlet extraction. In soxhlet extraction, Optimum conditions were extraction time of 6 h for ethanol 80 % as solvent. Value of phenolic compounds and extraction yield of licorice root in microwave assisted (MAE), and soxhlet were 47.47 mg/g and 16.38 %, 41.709 mg/g and 14.49 %, respectively. These results implied that MAE was more efficient extracting method than soxhlet.

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“…During the cultivations, plant height and chlorophylls [7] were monitored. At harvest, yields were quantified and bulbs were extracted [8] and investigated for their total phenolic content (by Folin-Ciocâlteu reagent) and antioxidant activity (by 2,2-difenil-1-picrylhydrazyl -DPPH, 2,2′-azinobis-(3ethylbenzthiazolin-6-sulfonic acid) -ABTS, and ferric reducing antioxidant power -FRAP assays) [9].…”

Section: Methodsmentioning

confidence: 99%

Allium cepa L. Inoculation with a Consortium of Plant Growth-Promoting Bacteria: Effects on Plant Growth and Development and Soil Fertility Status and Microbial Community

Pellegrini

Spera²,

Ercole

et al. 2021

The 1st International Electronic Conference on Microbiology

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The present work was aimed at investigating the effects of a four strains consortium—Azospirillum brasilense, Gluconacetobacter diazotrophicus, Herbaspirillum seropedicae, and Burkholderia ambifaria—on crops of Allium cepa L. and its soil health. The bacterial consortium was inoculated on seeds of two different onion varieties; inoculated seeds and control ones (treated with autoclaved inoculum) were sown in open-field and followed until harvest. Plant growth development parameters, as well as soil physico-chemical and molecular profiles (DNA extraction and 16S community sequencing on the Mi-Seq Illumina platform), were investigated. The results showed a positive influence of bacterial application on plant growth, with increased plant height (+18%), total chlorophylls (+42%), crop yields (+13%), and bulbs dry matter (+3%) than the control. The differences between control and treated experimental conditions were also underlined in the bulb extracts in terms of total phenolic contents (+25%) and antioxidant activities (+20%). Soil fertility and microbial community structure and diversity were also positively affected by the bacterial inoculum. At harvest, the soil with the presence of the bacterial consortium showed an increase of total organic carbon, organic matter, and available P and higher concentrations of nutrients than control. The ecological indexes calculated on the molecular profiles showed that community diversity was positively affected by the bacterial treatment. The present work allowed to remark the effective use of plant growth-promoting bacteria as a valid fertilization strategy to improve yield in productive landscapes, whilst safeguarding soil biodiversity.

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Sunflower Oil Stabilization by Persian Walnut Leaves Extract during Oven Storage Test

Cited by 8 publications

References 14 publications

Phytochemical Analysis and Antimicrobial/Antioxidant Activity ofCynodon dactylon(L.) Pers. Rhizome Methanolic Extract

Phytochemical Analysis and Antimicrobial/Antioxidant Activity ofCynodon dactylon(L.) Pers. Rhizome Methanolic Extract

Optimization of microwave assisted extraction (MAE) and soxhlet extraction of phenolic compound from licorice root

Allium cepa L. Inoculation with a Consortium of Plant Growth-Promoting Bacteria: Effects on Plant Growth and Development and Soil Fertility Status and Microbial Community

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