Medicinal plant extract associated with bacterial cellulose membrane: Antibacterial activity and physicochemical properties
Published on: 4th February, 2020
OCLC Number/Unique Identifier: 8531081943
Burns injuries induce a state of immunodepression that predisposes to a bacterial infectious complication that leads to several comorbid diseases and high mortality rate. Previous studies about anti-inflammatory, antimicrobial and antioxidant properties of Aloe vera (L.) Burm., Calendula officinalis L.and Matricaria recutita L. are acknowledge by antimicrobial effects.
Previous studies about anti-inflammatory, antimicrobial and antioxidant properties of Aloe vera (L.) Burm., Calendula officinalis L. and Matricaria recutita L. are knowledge by antimicrobial effects. Bacterial cellulose membrane (nature BCM) is a potential carrier as a drug delivery system in the wound and burn treatment. The present study aimed to evaluate the antibacterial activity of extracts of A. vera, C. officinalis, and M. recutita incorporated in BCM against bacterial strains commonly present in wound and burns. The agar-dilution susceptibility testing was used to determine the minimum inhibitory concentration (MIC) for S. aureus, E. coli, and P. aeruginosa. The standardized extracts of A. vera, M. recutita, and C. officinalis were, respectively, used at 3.25% of total polysaccharides, 1% of apigenin 7-O-glucoside and 0.084% of total flavonoids expressed in quercetin. The BCM incorporated with A. vera extract was efficient to prevent the growth of P. aeruginosa and S. aureus. BCM loaded with C. officinalis inhibited the growth of S. aureus. The BCM loaded with A. vera and C. officinalis extract showed better antibacterial activities against P. aeruginosa and S. aureus and, consequently, properties to prevent infectious disease in the wound or burn caused by these bacteria.
Micropropagation and cytological studies of Aole vera Linn
Published on: 30th September, 2022
OCLC Number/Unique Identifier: 9636718751
Aloe vera Linn. is an essential medicinal plant. In this present research work, a protocol of in vitro regeneration and karyomorphological analysis of Aloe vera was developed using different concentrations and compositions of media. Shoot apices of field-grown plants were used as explant and aseptically cultured on Murashige and Skoog (MS) medium fortified with different concentrations and combinations of auxins (IAA and NAA) and cytokinins (BAP and Kn). The highest number of multiple shoot buds (4.36 ± 0.07) was obtained from MS + 2.0 mg/l BAP + 1.0 mg/l IAA and induced shoot buds underwent rapid elongation (4.24 ± 0.06 cm) on the same medium composition. Half strength MS media with 2.0 mg/l IBA was suitable for induction and proliferation (6.31 ± 0.05) of roots and 95% of plantlets were acclimatized to field conditions successfully. Somatic chromosome numbers of mother and in vitro grown plants were confirmed to be 2n = 14. Chromosome length ranged from 4.28 - 13.74 µm in the naturally grown plants and 4.46 - 14.1 µm for in vitro grown plants. The total form percent (TF%) of mother and in vitro grown plants was 41.69% and 42.23%, respectively. The karyotype formula of in vivo grown plants was 2n = 14 = 4Lsm + 6Mm + 4Sm, whereas that of the micropropagated plants was 2n = 14 = 4Lsm + 4Mm + 6Sm. The frequency of the chromosome having arm more than 2:1 was 0.08 for mother plants and 0.15 for in vitro grown plants. Therefore, the karyotype of both plants falls into the 2B symmetrical type based on Stebbins classification (1971).
Cold Atmospheric Pressure Plasma Jet and Plasma Lamp Interaction with Plants: Electrostimulation, Reactive Oxygen and Nitrogen Species, and Side Effects
Published on: 22nd August, 2023
Cold atmospheric pressure plasma (CAPP) treatment is a highly effective method of protecting seeds, plants, flowers, and trees from diseases and infection and significantly increasing crop yields. Here we found that cold atmospheric pressure He-plasma jet (CAPPJ) can also cause side effects and damage to plants if the plasma exposure time is too long. Reactive oxygen and nitrogen species (RONS), electromagnetic fields, and ultraviolet photons emitted by CAPPJ can cause both positive and negative effects on plants. CAPPJ can interact with biological tissue surfaces. The plasma lamp has no visible side effects on Aloe vera plants, cabbage, and tomatoes. A plasma lamp and a cold atmospheric pressure plasma He-jet cause strong electrical signaling in plants with a very high amplitude with frequencies equal to the frequency of plasma generation. The use of plasma lamps for electrostimulation of biological tissues can help to avoid side processes in biological tissues associated with the generation of RONS, UV photons, and direct interaction with cold plasma. CAPP technology can play an important role in agriculture, medicine, the food industry, chemistry, surface science, material science, and engineering applications without side effects if the plasma exposure is short enough.
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