Quantification of Total Phenols, Tannins, Anthocyanins Content in Myrtus communis L. and Antioxidant Activity Evaluation in Function of Plant Development Stages and Altitude of Origin Site

Medda, Silvia; Fadda, Angela; Dessena, Leonarda; Mulas, Maurizio

doi:10.3390/agronomy11061059

Cited by 20 publications

(17 citation statements)

References 66 publications

(87 reference statements)

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“…The proportion of anthocyanins can reach 56% of total phenols in some berries. Anthocyanins are thought to play a minor role in the antioxidant activity of berries . Our studies confirmed the statement of other authors ,, that antioxidant activity depends on the concentration of phenolics and ascorbic acid, but not on the content of anthocyanins.…”

Section: Discussionsupporting

confidence: 92%

Application of Commercial Plant Probiotics Improves the Berry Yield and Quality of Field-Grown Blackcurrant

Jurkonienė

Mockevičiūtė

Jankauskienė

et al. 2021

ACS Agric. Sci. Technol.

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The berries of blackcurrants are commercially important and rich in antioxidants and have a high free radical scavenging capacity. Four controlled fields 1 ha in size were set up in an organic farm to test two commercial plant probiotic products, ProbioHumus and NaturGel, and their combined impact on blackcurrant berry yield and quality. Spray applications of ProbioHumus, NaturGel, and their combination significantly increased fruit yields 38, 25, and 16%, respectively, versus the nontreated control. The berries from plants inoculated with probiotics had significantly higher contents of anthocyanins versus the nontreated control and tended to exhibit increased levels of ascorbic acid. The blackcurrant berries treated with both probiotics exhibited a fair ability to scavenge DPPH free radicals. This is the first study of the improvement of both the yield and the quality of blackcurrant berries by the application of commercial plant probiotics under field conditions.

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Section: Discussionsupporting

confidence: 92%

Application of Commercial Plant Probiotics Improves the Berry Yield and Quality of Field-Grown Blackcurrant

Jurkonienė

Mockevičiūtė

Jankauskienė

et al. 2021

ACS Agric. Sci. Technol.

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“…A correlation between the tested antioxidant assays with TFC were positively high (0.995 < r < 1.000), indicating that T. musilii methanolic extract possesses comparable activities in all four assays. In fact, it has been well documented that TPC, TFC, and TTC found in the plant kingdom are responsible for their antioxidant activities due to their redox properties [ 81 , 82 , 83 , 84 , 85 , 86 ].…”

Section: Discussionmentioning

confidence: 99%

Thymus musilii Velen. Methanolic Extract: In Vitro and In Silico Screening of Its Antimicrobial, Antioxidant, Anti-Quorum Sensing, Antibiofilm, and Anticancer Activities

Noumi

Ahmad²,

Bouali

et al. 2022

Life

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Thymus musilii Velen. is a rare plant species cultivated in the Ha’il region (Saudi Arabia) under greenhouse conditions. In this work, we described, for the first time, the phytochemical composition, antimicrobial, antioxidant, anti-quorum sensing, and anticancer activities of T. musilii methanolic extract using both experimental and computational approaches. The obtained results showed the identification of eight small-like peptides and eighteen phyto-compounds by using high-resolution liquid chromatography–mass spectrometry (HR-LCMS) dominated mainly by compounds belonging to isoprenoid, fatty acyl, flavonoid, and alkaloid classes. The tested extracts exhibited high antifungal and antibacterial activity with the mean diameter of growth inhibition zones ranging from 12.33 ± 0.57 mm (Pseudomonas aeruginosa ATCC 27853) to 29.33 ± 1.15 mm (Candida albicans ATCC 10231). Low minimal inhibitory concentrations were recorded for the tested micro-organisms ranging from 0.781 mg/mL to 12.5 mg/mL. While higher doses were necessary to completely kill all tested bacterial and fungal strains. Thyme extract was able to scavenge DPPH•, ABTS•+, β-carotene, and FRAP free radicals, and the IC50 values were 0.077 ± 0.0015 mg/mL, 0.040 ± 0.011 mg/mL, 0.287 ± 0.012 mg/mL, and 0.106 ± 0.007 mg/mL, respectively. The highest percentage of swarming and swimming inhibition was recorded at 100 µg/mL with 39.73 ± 1.5% and 25.18 ± 1%, respectively. The highest percentage of biofilm inhibition was recorded at 10 mg/mL for S. typhimurium ATCC 14028 (53.96 ± 4.21%) and L. monocytogenes ATCC 7644 (49.54 ± 4.5 mg/mL). The in silico docking study revealed that the observed antimicrobial, antioxidant, and anticancer activities of the constituent compounds of T. musilii are thermodynamically feasible, notably, such as those of the tripeptides (Asn-Met-His, His-Cys-Asn, and Phe-His-Gln), isoprenoids (10-Hydroxyloganin), and diterpene glycosides (4-Ketoretinoic acid glucuronide).

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“…This is especially true since the composition of extracts can vary drastically depending on the plant location [22], time of year [23,24], the stage of the plant (young plant, plant at the time of flowering etc.) [25][26][27] and the plant part that is extracted [28,29]. Previous studies have also shown that the phenol content in the trunk drastically varies with respect to height [30], and between sapwood, heartwood, knotwood and branchwood [31].…”

Section: Introductionmentioning

confidence: 99%

The Phenolic Content, Antioxidative Properties and Extractable Substances in Silver Fir (Abies alba Mill.) Branches Decrease with Distance from the Trunk

Schoss

Benedetič

Kreft

2022

Plants

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Silver fir (Abies alba Mill.) is one of the most common and valuable conifer tree species in Central Europe, with well-established usage in the construction and furniture industries, as well as the food, health products, pharmaceuticals and cosmetics industries. Silver fir branch extract, a mixture of antioxidative phenols, is produced industrially as a food supplement with a wide range of therapeutic properties. This study investigates optimization of the production of silver fir branch extract by researching its antioxidant activity (ABTS and DPPH assay), phenol content (Folin-Ciocalteu assay), lignan content (HPLC) and extractable content at various distances from the trunk (0–80 cm). The antioxidative activity, phenol content and extractable content decreased from the proximal to the distal part of the branch. The decrease in ABTS assay activity was 51%, and that of the DPPH assay was 52%; the decrease in total phenol content was 35–40%; and the decrease in lignan content was 91%. The extractable matter content was reduced by 40%. Data gained in the study herein justifies the importance of researching existing and industrially produced plant extracts for further optimization of the final product. Results shows that industry can also produce extracts with elevated content of lignans with the use of short proximal parts of the branches.

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Quantification of Total Phenols, Tannins, Anthocyanins Content in Myrtus communis L. and Antioxidant Activity Evaluation in Function of Plant Development Stages and Altitude of Origin Site

Cited by 20 publications

References 66 publications

Application of Commercial Plant Probiotics Improves the Berry Yield and Quality of Field-Grown Blackcurrant

Application of Commercial Plant Probiotics Improves the Berry Yield and Quality of Field-Grown Blackcurrant

Thymus musilii Velen. Methanolic Extract: In Vitro and In Silico Screening of Its Antimicrobial, Antioxidant, Anti-Quorum Sensing, Antibiofilm, and Anticancer Activities

The Phenolic Content, Antioxidative Properties and Extractable Substances in Silver Fir (Abies alba Mill.) Branches Decrease with Distance from the Trunk

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