Antimicrobial Activity and Constituents of Essential Oils from the Leaves of <i>Syzygium szemaoense</i> Merrill &amp; L.M. Perry and <i>Syzygium corticosum</i> (Lour.) Merr. &amp; L.M. Perry grown in Vietnam

Hương, Lê Thị; Phu, Hoang Vinh; Giang, Lê Đức; Chau, Dao Thi Minh; Ogunwande, Isiaka A.

doi:10.1080/0972060x.2022.2159542

Cited by 9 publications

(5 citation statements)

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“…Furthermore, the high content of (E)-caryophyllene in the essential oils of the two studied Syzygium species is noteworthy, especially S. tonkinense. It was also noted previously that the volatile constituents of most Syzygium species reported from Vietnam contained high amounts of (E)-caryophyllene (Huong et al, 2017;Khanh and Ban, 2020;Tran et al, 2021;Huong et al, 2022). However, several other species of Syzygium with either a low content or total absence of (E)-caryophyllene have been reported from other countries (Chalannavar et al, in previous studies (Bassolé et al, 2003;Senthilkumar and Venkatesalu, 2010;Chau et al, 2020).…”

Section: Antimicrobial Activity Of Essential Oilsmentioning

confidence: 68%

“…Although the compositions of essential oils and biological activities of other Syzygium species are well-known (Kadir et al, 2022). Furthermore, several essential oils of Syzygium have been tried as mosquito larvicides as well as antimicrobials (Sarvesan et al, 2015;Siddique et al, 2015;Govindarajan and Benelli, 2016;Hamad et al, 2017;Benelli et al, 2018;Huong et al, 2022;Fernandes et al, 2022). However, to our best knowledge, there are no published reports on the chemical composition, antimicrobial and larvicidal activities of the essential oils of S. attopeuense and S. tonkinense.…”

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confidence: 99%

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Chemical composition, antimicrobial and larvicidal activities of essential oils of two Syzygium species from Vietnam

et al. 2024

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The present study is the first to investigate the chemical composition, antimicrobial and larvicidal activities of the essential oils from the leaves of Syzygium attopeuense (Gagnep.) Merr. & L.M.Perry and Syzygium tonkinense (Gagnep.) Merr. & L.M.Perry collected in Vietnam. The essential oils were extracted by hydrodistillation and analyzed by GC and GC–MS. The study indicated the presence of a high percentage of sesquiterpenes in both investigated essential oils. The major components of S. attopeuense essential oil were bicyclogermacrene (24.26%), (E)-caryophyllene (11.72%), and (E)-β-ocimene (6.75%), whereas S. tonkinense essential oil was dominated by (E)-caryophyllene (80.80%). The antimicrobial activity of essential oils was evaluated by broth microdilution assay to determine the minimum inhibitory concentration (MIC) and median inhibitory concentration (IC50). Both essential oils exhibited remarkable inhibitory activity against all tested Gram-positive bacteria and yeast than Gram-negative bacteria. Among them, essential oils of S. attopeuense and S. tonkinense possessed the strongest activity against Enterococcus faecalis (MIC = 4.00 μg/mL; IC50 = 1.69 μg/mL) and Candida albicans (MIC = 16.00 μg/mL; IC50 = 8.67 μg/mL), respectively. Furthermore, the larvicidal activity of essential oils was tested using fourth-instar larvae of Aedes aegypti. Results from the larvicidal test revealed that both essential oils had an excellent inhibitory effect against A. aegypti larvae with LC50 values from 25.55 to 30.18 μg/mL and LC90 values from 33.00 to 39.01 μg/mL. Our findings demonstrate that the essential oil extracted from S. attopeuense and S. tonkinense are potential sources of natural antimicrobials and can act as inexpensive mosquito larvicidal agents.

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Section: Antimicrobial Activity Of Essential Oilsmentioning

confidence: 68%

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confidence: 99%

Chemical composition, antimicrobial and larvicidal activities of essential oils of two Syzygium species from Vietnam

et al. 2024

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“…57 EO from Syzygium szemaoense , primarily consisting of cis -β-elemene, has demonstrated noteworthy antimicrobial properties against bacteria and fungi. 58 Many EOs contain geranial, neral, geraniol, and geranyl acetate as their primary components, which have shown antimicrobial activity against a broad range of bacteria, including both Gram-positive and Gram-negative strains. 59,60 These compounds commonly exert their antimicrobial properties through mechanisms including disruption of cell membranes, inhibition of enzymatic processes, interference with protein synthesis, and disruption of essential microbial metabolic pathways.…”

Section: Resultsmentioning

confidence: 99%

Essential Oils of Distichochlamys benenica: Chemical Constituents, Mosquito Larvicidal and Antimicrobial Activities

Huong,

Dai,

Thin

et al. 2023

Natural Product Communications

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In recent years, essential oils (EOs) have gained popularity for their potential as natural antimicrobial agents and mosquito larvae control. This study aimed to explore the chemical composition of EOs extracted from the leaves and rhizomes of Distichochlamys benenica Q.B. Nguyen & Škorničk, and to evaluate their mosquito larvicidal and antimicrobial activities. The EOs were obtained using hydrodistillation and subjected to gas chromatography (GC) and GC-mass spectrometry to determine their chemical constituents. The main components identified in the leaf EO were β-pinene (47.7%), cis-β-elemene (8.5%), and α-pinene (7.8%), while the rhizome EO mainly consisted of geranyl acetate (25.7%), geranial (23.3%), neral (16.6%), and geraniol (8.4%). The mosquito larvicidal activity of the EOs was evaluated using larvae of Aedes aegypti and Culex quinquefasciatus during 24 and 48 h of treatment. The results demonstrated that these EOs effectively inhibited the mosquito larvae, with LC50 values ranging from 31.15 to 71.53 μg/mL and LC90 values ranging from 46.28 to 148.66 μg/mL. Additionally, the minimum inhibitory concentration (MIC) and half-maximal inhibitory concentration (IC50) values were used to evaluate the antimicrobial efficacy of EOs. Both EOs exhibited potent antimicrobial effects against Enterococcus faecalis ATCC 299212, Staphylococcus aureus ATCC 25923, Bacillus cereus ATCC 14579, Pseudomonas aeruginosa ATCC 27853, and Candida albicans ATCC 10231, with MIC values ranging from 16 to 64 μg/mL and IC50 values ranging from 4.67 to 45.67 μg/mL. Overall, the mosquito larvicidal and antimicrobial activities of D. benenica EOs highlight their potential as natural alternatives for combating mosquito-borne diseases and microbial infections.

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“…A recent report by Huong et al indicated that the leaf essential oils of S. attopeuense and S. tonkinense exhibited the strongest activity against E. faecalis (MIC and IC 50 of 4.00 µg/mL and 1.69 µg/mL, respectively) and C. albicans (MIC and IC 50 of 16.00 µg/mL and 8.67 µg/mL, respectively), respectively [15]. The leaf essential oil of S. corticosum caused an inhibition to B. cereus with the MIC value of 128 µg/mL [14]. Another example is that the leaf essential oil of S. samarangense showed very strong activity against E. coli with an inhibitory zone of 20.2 mm [26].…”

Section: Antimicrobial Activitymentioning

confidence: 99%

“…In another example, S. szemaoense Merr. and L. M. Perry leaf essential oil (from Nghe An, Vietnam) with cis-β-elemene (68.0%) showed antifungal activity against the fungus Candida albicans with an MIC value of 64 µg/mL [14]. A recent report by Huong et al also recommended the use of Vietnamese S. attopeuense (Gagnep.…”

Section: Introductionmentioning

confidence: 99%

Essential Oils of Five Syzygium Species Growing Wild in Vietnam: Chemical Compositions and Antimicrobial and Mosquito Larvicidal Potentials

Huong,

Hung,

Linh

et al. 2023

Molecules

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The essential oils of five Vietnamese Syzygium species (Syzygium levinei, S. acuminatissimum, S. vestitum, S. cumini, and S. buxifolium) were first hydro-distilled and analyzed using GC-FID/MS (gas chromatography–flame ionization detection/mass spectrometry). Monoterpene hydrocarbons, sesquiterpene hydrocarbons, and oxygenated sesquiterpenoids were the main chemical classes in these oils. All these essential oils showed good–excellent antimicrobial activities against Gram-positive bacteria Enterococcus faecalis, Staphylococcus aureus, and Bacillus cereus, and the yeast Candida albicans. S. levinei leaf essential oil, rich in bicyclogermacrene (25.3%), (E)-β-elemene (12.2%), (E)-caryophyllene (8.2%), and β-selinene (7.4%), as well as S. acuminatissimum fruit essential oil containing (E)-caryophyllene (14.2%), α-pinene (12.1%), caryophyllene oxide (10.9%), β-selinene (10.8%), α-selinene (8.0%), and α-humulene (5.7%), established the same MIC value of 8 µg/mL against E. faecalis and B. cereus, which were much better than the positive control streptomycin (MIC 128–256 µg/mL). The studied essential oils showed the potential to defend against mosquitoes since they caused the 24 and 48 h LC50 values of less than 50 µg/mL against the growth of Culex quinquefasciatus and Aedes aegypti larvae. Especially, S. buxifolium leaf essential oil strongly inhibited Ae. aegypti larvae with 24 and 48 h LC50 values of 6.73 and 6.73 µg/mL, respectively, and 24 and 48 h LC90 values of 13.37 and 10.83 µg/mL, respectively. These findings imply that Vietnamese Syzygium essential oils might have potential for use as supplemental antibacterial agents or as “green” alternatives for the control of mosquitoes.

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Antimicrobial Activity and Constituents of Essential Oils from the Leaves of Syzygium szemaoense Merrill & L.M. Perry and Syzygium corticosum (Lour.) Merr. & L.M. Perry grown in Vietnam

Cited by 9 publications

References 25 publications

Chemical composition, antimicrobial and larvicidal activities of essential oils of two Syzygium species from Vietnam

Chemical composition, antimicrobial and larvicidal activities of essential oils of two Syzygium species from Vietnam

Essential Oils of Distichochlamys benenica: Chemical Constituents, Mosquito Larvicidal and Antimicrobial Activities

Essential Oils of Five Syzygium Species Growing Wild in Vietnam: Chemical Compositions and Antimicrobial and Mosquito Larvicidal Potentials

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