Antibacterial Activity of Hexanol Vapor In Vitro and on the Surface of Vegetables

Kyoui, Daisuke; Saito, Yuka; Takahashi, Akifumi; Tanaka, Gou; Yoshida, Runa; Maegaki, Yoshiyuki; Kawarai, Taketo; Ogihara, Hirokazu; Suzuki, Chise

doi:10.3390/foods12163097

Cited by 9 publications

(4 citation statements)

References 32 publications

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“…They exhibited strong antibacterial activity, especially against Gram-positive strains [ 66 , 67 ], which could be one of the reasons why the hydrosols of this species were effective on S. aureus . Bornyl acetate is also documented for its insecticidal activity [ 68 ] and anti-inflammatory effect in human chondrocytes [ 69 ]. On the contrary, A. majus was characterized by 1-hexanol, a volatile alcohol known to have an effect against food-related Gram-negative bacteria [ 70 ].…”

Section: Resultsmentioning

confidence: 99%

Exploring the Volatile Composition and Antibacterial Activity of Edible Flower Hydrosols with Insights into Their Spontaneous Emissions and Essential Oil Chemistry

Najar,

Pieracci,

Fratini

et al. 2024

Plants

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In the circular economy framework, hydrosols, by-products of the essential oil industry, are gaining attention for their potential in waste reduction and resource reuse. This study analyzed hydrosols from six edible flowers, investigating their chemical composition (VOC-Hyd) and antibacterial properties alongside volatile organic compounds of fresh flowers (VOC-Fs) and essential oils (EOs). Antirrhinum majus exhibited ketones as major VOC-Fs (62.6%) and VOC-Hyd (41.4%), while apocarotenoids dominated its EOs (68.0%). Begonia cucullata showed alkanes (33.7%) and aldehydes (25.7%) as primary VOC-Fs, while alkanes were prevalent in both extracts (65.6% and 91.7% in VOC-Hyd and in EOs, respectively). Calandula officinalis had monoterpenoids in VOC-Fs and VOC-Hyd (89.3% and 49.7%, respectively), while its EOs were rich in sesquiterpenoids (59.7%). Dahlia hortensis displayed monoterpenoid richness in both VOC-Fs and extracts. Monocots species’ VOC-Fs (Polianthes tuberosa, Tulbaghia cominsii) were esters-rich, replaced by monoterpenoids in VOC-Hyd. P. tuberosa EO maintained ester richness, while T. cominsii EOs contained a significant percentage of sulfur compounds (38.1%). Antibacterial assays indicated comparable minimum inhibitory concentration profiles across VOC-Hyd: B. calcullata and P. tuberosa against Staphylococcus aureus and Salmonella enterica ser. typhimurium, T. cominsii against Escherichia coli and S. enterica, A. majus and C. officinalis against S. aureus, and D. hortensis against S. enterica.

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Section: Resultsmentioning

confidence: 99%

Exploring the Volatile Composition and Antibacterial Activity of Edible Flower Hydrosols with Insights into Their Spontaneous Emissions and Essential Oil Chemistry

Najar,

Pieracci,

Fratini

et al. 2024

Plants

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“…Regarding the new terpenes in the substance, the chemical structure is similar to that of the 1,8-cineole, terpinen-4-ol, and (−)-α-bisabolol and could possibly be generated from 1-methyl-4-(1-methylethenyl)-2-cyclohexene-1-ol, and TTO terpenes [4]. These phytochemicals have an antimicrobial activity [64][65][66] against pathogens involved in the pathogenesis of SD and dandruff. Additional anti-inflammatory activity of the trans-ascaridol glycol [63] improves the scalp condition and decreases the pain sensitivity, itching, severe irritation.…”

Section: Gc-ms Analysis Of the Plant-based Substancementioning

confidence: 92%

Development and Validation of a Gas Chromatography–Mass Spectrometry Method for the Analysis of the Novel Plant-Based Substance with Antimicrobial Activity

Filatov,

Ilin,

Kulyak

et al. 2023

Antibiotics

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The research into new pharmaceutical substances based on essential oils, individual biologically active phytochemicals, and plant extracts is a priority in field of pharmaceutical sciences. A novel multicomponent substance based on Melaleuca alternifolia (M. alternifolia) leaf oil (TTO), 1,8-cineole (eucalyptol), and (-)-α-bisabolol with potent synergetic antimicrobial activity was investigated and suggested for the treatment of seborrheic dermatitis (SD) and dandruff. The objective of this research was to establish and validate a specific, accurate, and precise gas chromatography–mass spectrometry (GC–MS) method for further quantitative and qualitative analysis in order to ensure quality control. The main parameters of validation were suitability, specificity, linearity, accuracy, and intermediate precision according to the European Pharmacopoeia (XI edition), Russian Pharmacopoeia (XIV edition), and some parameters of ICH requirements. The peaks of fifteen chemical phytoconstituents were identified in the test sample solution with the prevalence of (−)-α-bisabolol (27.67%), 1,8-cineole (25.63%), and terpinen-4-ol (16.98%). These phytochemicals in the novel substance were chosen for standardization and validation of the GC–MS method. The chosen chromatographic conditions were confirmed for testing of the plant-based substance in a suitability test. It was established that the GC–MS method provides a significant separation, symmetry of peaks and resolution between phytochemicals. The calibration curves of each phytochemical had good linearity (R2 > 0.999) in five concentrations. In the same concertation range, the accuracy of terpinen-4-ol, 1,8-cineol, and (−)-α-bisabolol determination using the method of additives was 98.3–101.60%; the relative standard deviation (RSD) ranged from 0.89% to 1.51% and corresponded to requirements. The intraday and interday precision was ≤2.56%. Thus, the GC–MS method was validated to be specific, sensitive, linear, accurate, and precise. This GC–MS method could be recommended as a routine analytic technique for multicomponent plant-based substances-enriched terpenes.

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“…Carvacrol is mostly found in oregano oil [54]. 1-Hexanol, phenylethyl alcohol, and 3-octanone are naturally found in various plants, flowers, fruits, and vegetable essential oils, as well as beverages [55,56].…”

Section: Volatile Compound Profile Of the Broiler Chicken Droppingsmentioning

confidence: 99%

Physical and Chemical Characteristics of Droppings as Sensitive Markers of Chicken Health Status

Mozuriene,

Mockus,

Klupsaite

et al. 2024

Animals

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The aim of this study was to analyze the physical and chemical characteristics of chicken droppings (n = 73), which were collected during different age periods and classified by visual inspection into normal (N) and abnormal (A). Significant differences were found in the texture, pH, dry matter (DM), fatty acids (FAs), short-chain fatty acids (SCFAs), and volatile compounds (VCs) between the tested dropping groups (p ≤ 0.05). The age period of the chicken had a significant influence on the color coordinates, texture, pH, DM, and SCFA contents in N and A as well as on all FAs content in N (p ≤ 0.05). Droppings from the N group had a harder texture, lower values of a* and b* color coordinates, higher DM content, higher level of linoleic FA, and lower level of α-linolenic FA than the droppings from the A group in each age period (p ≤ 0.05). The predominant SCFA was acetic acid, the content of which was significantly lower in the N group compared to that of the A group. The alcohol and organic acid contents were the highest in most of the A group at different age periods, while ketones dominated in the N and A groups. In conclusion, the majority of the tested dropping characteristics were influenced by the age period. While certain characteristics demonstrate differences between N and A, a likely broader range of droppings is required to provide more distinct trends regarding the distribution of characteristics across different droppings.

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Antibacterial Activity of Hexanol Vapor In Vitro and on the Surface of Vegetables

Cited by 9 publications

References 32 publications

Exploring the Volatile Composition and Antibacterial Activity of Edible Flower Hydrosols with Insights into Their Spontaneous Emissions and Essential Oil Chemistry

Exploring the Volatile Composition and Antibacterial Activity of Edible Flower Hydrosols with Insights into Their Spontaneous Emissions and Essential Oil Chemistry

Development and Validation of a Gas Chromatography–Mass Spectrometry Method for the Analysis of the Novel Plant-Based Substance with Antimicrobial Activity

Physical and Chemical Characteristics of Droppings as Sensitive Markers of Chicken Health Status

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