Evaluation of Antioxidants, Total Phenolics And Antimicrobial Activities of Ethyl Acetate Extracts From Fungi Grown on Rice Straw

Shawky, Bahaa T.; Nagah, Mohammed; Ghareeb, Mosad A.; El-Sherbiny, Gamal M.; Moghannem, Saad A.; Abdel‐Aziz, Mohamed S.

doi:10.32604/jrm.2019.04524

Cited by 10 publications

(6 citation statements)

References 29 publications

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“…A substantial rise in the chlorophyll content of plants treated with fungal elicitors was also observed. Another study by the authors of references [ 80 , 81 , 82 , 83 ] presented likewise results where the total phenolics were improved by Aspergillus niger . The authors of references [ 84 , 85 , 86 , 87 ] investigated the impact of Aspergillus niger on apricot ( Prunus armeniaca L.) production and discovered a 30% increase in total phenolics.…”

Section: Discussionmentioning

confidence: 67%

Enhanced Production of Active Photosynthetic and Biochemical Molecules in Silybum marianum L. Using Biotic and Abiotic Elicitors in Hydroponic Culture

et al. 2023

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Elicitors are stressors that activate secondary pathways that lead to the increased production of bioactive molecules in plants. Different elicitors including the fungus Aspergillus niger (0.2 g/L), methyl jasmonate (MeJA, 100 µM/L), and silver nanoparticles (1 µg/L) were added, individually and in combination, in a hydroponic medium. The application of these elicitors in hydroponic culture significantly increased the concentration of photosynthetic pigments and total phenolic contents. The treatment with MeJA (methyl jasmonate) (100 µM/L) and the co-treatment of MeJA and AgNPs (silver nanoparticles) (100 µM/L + 1 µg/L) exhibited the highest chlorophyll a (29 µg g−1 FW) and chlorophyll b (33.6 µg g−1 FW) contents, respectively. The elicitor MeJA (100 µM/L) gave a substantial rise in chlorophyll a and b and total chlorophyll contents. Likewise, a significant rise in carotenoid contents (9 µg/g FW) was also observed when subjected to meJA (100 µM/L). For the phenolic content, the treatment with meJA (100 µM/L) proved to be very effective. Nevertheless, the highest production (431 µg/g FW) was observed when treated with AgNPs (1 µg/L). The treatments with various elicitors in this study had a significant effect on flavonoid and lignin content. The highest concentration of flavonoids and lignin was observed when MeJA (100 mM) was used as an elicitor, following a 72-h treatment period. Hence, for different plant metabolites, the treatment with meJA (100 µM/L) and a co-treatment of MeJA and AgNPs (100 µM/L + 1 µg/L) under prolonged exposure times of 120–144 h proved to be the most promising in the accretion of valuable bioactive molecules. The study opens new insights into the use of these elicitors, individually or in combination, by using different concentrations and compositions.

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Section: Discussionmentioning

confidence: 67%

Enhanced Production of Active Photosynthetic and Biochemical Molecules in Silybum marianum L. Using Biotic and Abiotic Elicitors in Hydroponic Culture

et al. 2023

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“…Phthalic acid, ethyl pentadecyl ester showed an absorption time of 14,588 minutes (Figure 13). This substance is characterized by the fact that it is an active enzymatic and bioactive substance among secondary metabolites (Bahaa et al, 2019). Mono(2-ethylhexyl) phthalate volatile metabolite showed an absorption rate of 14,817 minutes when T. asperellum Uz-A4 liquid culture was extracted with ethyl acetate (Figure 14).…”

Section: Resultsmentioning

confidence: 99%

Some Volatile Metabolites Produced by the Antifungal-Trichoderma Asperellum UZ-A4 Micromycete

Shavkiev¹,

Kholmamatovich²,

Ismoilovna³

et al. 2022

Int. J. Phytopathol.

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The fungus of the genus Trichoderma is characterized by high biological activity and the ability to synthesize many compounds of great scientific interest. Among them, producers of amino acids, nucleic and organic acids, vitamins, surface-active substances, numerous hydrolases, various antibiotics and other substances were revealed. In this work there were studied volatile organic compounds produced by the fungus Trichoderma asperellum Uz-A4, isolated from the soil of the cotton field of the Bukhara region of Uzbekistan infected with phytopathogens. The antagonistic activity of the fungus about phytopathogens Alternaria alternata, Aspergillus niger and Fusarium solani was evaluated. Trichoderma asperellum Uz-A4 micromyzet showed high activity on the 4 th day against Alternaria alternata and Fusarium solani about Aspergillus niger on the 9th day. From the culture fluid of the fungus Trichoderma asperellum Uz-A4, 11 main substances have been isolated and identified. Mass - spectrometric analysis has shown that these are the substances of Phenylethylcohol; 5-hydroxymethylfurfural; Dehydroa Ceticacid; 1-Dodecanol; 2,4-di-tert-Butylphenol; Diethyl Suberate; n-hexadecanoic acid; 1-hexadecanol, 2-methyl; Phthalic Acid, Ethyl Pentadecyl Ester; Mono (2-Thylhexyl) Phthalate; Octadecanoic Acid. A chemical formula, molecular weight and the absorption spectrum of these substances have been determined. The results indicated that these secondary metabolites could be useful for biological control applications of T. asperellum Uz-A4 strain against diverse plant pathogens.

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“…analysis was performed according to the reported procedures [27][28]. On the other hand, fatty acid compositions of the three oils were investigated via GC-MS analysis according to the method described [29&17].…”

Section: Gc-ms Analysismentioning

confidence: 99%

Cytotoxicity, Antioxidant Activities, GC-MS and HPLC Fingerprint Analyses of Different Extracts of Desmodium tortuosum (Sw.) DC

Elshazly,

Hamada,

Refahy

2023

Jordan j. pharm. sci.

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The family Fabaceae is the third-largest flowering plant family, and the genus Desmodium has exhibited a wide range of biological activities and a variety of chemical constituents. In the present study, different extracts of Desmodium tortuosum were evaluated for their cytotoxic and antioxidant activities, as well as their total phenolic content (TPC). The antioxidant activities were estimated using the 1,1'-diphenyl-2-picraylhydrazyl free radical (DPPH), while the cytotoxic activity was evaluated via the brine shrimp lethality test (BSLT). The antioxidant activity results revealed that the DPPH radical scavenging activity (SC50) ranged from 1.12 to 61.22 µg/ml with respect to ascorbic acid (SC50 = 7.45 µg/ml). Among all tested fractions, 90% methanol was the most active. On the other hand, the cytotoxic activities were arranged as follows: n-BuOH (LC50 = 310), EtOAc (LC50 = 350), and 70% methanol (LC50 = 380). High-Performance Liquid Chromatography-Fingerprint analyses were used to determine the chemical composition and relative proportions of phenolic compounds. GC-MS analysis indicated the presence of fatty acids and other compounds. The major identified compounds were Benzene (1-butyloctyl) (11.88%) and Himachalene <α-> (11.08%) for the ethyl acetate extract and 10-Undecenoic acid, methyl ester (25.50%) for unsaponifiable matter.

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Evaluation of Antioxidants, Total Phenolics And Antimicrobial Activities of Ethyl Acetate Extracts From Fungi Grown on Rice Straw

Cited by 10 publications

References 29 publications

Enhanced Production of Active Photosynthetic and Biochemical Molecules in Silybum marianum L. Using Biotic and Abiotic Elicitors in Hydroponic Culture

Enhanced Production of Active Photosynthetic and Biochemical Molecules in Silybum marianum L. Using Biotic and Abiotic Elicitors in Hydroponic Culture

Some Volatile Metabolites Produced by the Antifungal-Trichoderma Asperellum UZ-A4 Micromycete

Cytotoxicity, Antioxidant Activities, GC-MS and HPLC Fingerprint Analyses of Different Extracts of Desmodium tortuosum (Sw.) DC

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