Antibacterial and antifungal activities of essential oils from medicinal plants found in the South Pacific

Chand, Ravneel; Jokhan, Anjeela D.; Gopalan, Romila D.; Osborne, Tamara

doi:10.1071/sp17002

Cited by 6 publications

(4 citation statements)

References 40 publications

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“…Berdasarkan kategori tersebut, ratarata zona hambat ekstrak bunga kenanga terhadap C. acutatum dengan metode sumur difusi pada konsentrasi 1% (7,53 mm), konsentrasi 2% (8,02 mm), konsentrasi 3% (8,53 mm) dan konsentrasi 4% (9,20 mm) termasuk dalam kategori daya hambat sedang sedangkan, konsentrasi 5% (10,05 mm) termasuk kategori daya hambat sedang-kuat. Hasil ini sesuai dengan penelitian yang dilakukan oleh Chand et al (2017), bahwa aktivitas anti-jamur dari kenanga menghasilkan zona hambat yang besar pada konsentrasi yang lebih tinggi. Lemahnya aktivitas anti-jamur terjadi karena berkurangnya golongan senyawa aktif antijamur seperti senyawa fenolik dan senyawa terpenoid pada ekstrak bunga kenanga.…”

Section: Pembahasanunclassified

EFFECTIVENESS OF KENANGA (Cananga odorata (Lam).) FLOWER EXTRACT TO INHIBIT THE GROWTH OF Colletotrichum acutatum (Jenkins & Winstead) CAUSES OF ANTHRACNOSE DISEASE IN CHILI (Capsicum annum L.) PLANT

Agung

Sudirga²,

Darmadi³

2022

SIMBIOSIS

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Jenis Colletotrichum acutatum merupakan jamur patogen penyebab penyakit antraknosa pada tanaman budidaya, salah satunya tanaman cabai. Pengendalian penyakit antraknosa umumnya menggunakan pestisida sintetis. Penggunaan pestisida sintetis secara terus menerus dapat menimbulkan efek samping yang merugikan, sehingga diperlukan senyawa lain untuk mengendalikan jamur patogen tersebut salah satunya melalui penggunaan fungisida nabati. Penelitian ini bertujuan untuk mengetahui efektivitas ekstrak bunga kenanga dalam menghambat pertumbuhan Colletotrichum acutatum dan untuk mengetahui golongan senyawa aktif yang terkandung dalam ekstrak bunga kenanga. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan tujuh perlakuan yaitu P0: kontrol negatif, P1: kontrol positif, P2: konsentrasi ekstrak 1% (b/v), P3: konsentrasi ekstrak 2% (b/v), P4: konsentrasi ekstrak 3% (b/v), P5: konsentrasi ekstrak 4% (b/v), P6: konsentrasi ekstrak 5% (b/v) dengan masing-masing perlakuan diulang sebanyak 4 kali. Parameter yang diamati yaitu terbentuknya diameter zona hambat, diameter koloni, kerapatan spora, dan uji fitokimia ekstrak. Hasil penelitian uji sumur difusi menunjukan zona hambat terbesar terdapat pada konsentrasi 5% (P6) yaitu sebesar 10,05 mm dan zona hambat terkecil pada konsentrasi 1% (P2) sebesar 7,53 mm. Hasil uji koloni menunjukan diameter koloni terkecil pada hari ke-10 terdapat pada konsentrasi 3% (P4) sebesar 7,09 cm dan diameter koloni terbesar pada konsentrasi 1% (P2) sebesar 8,46 cm. Hasil uji kerapatan spora menunjukan jumlah kerapatan spora terbesar terdapat pada konsentrasi 1% (P3) yaitu 3,24×104 spora/mL dan jumlah spora terkecil terdapat pada konsentrasi 3% (P4) sebesar 2,36×104 spora/mL. Golongan senyawa aktif yang ditemukan dalam ekstrak bunga kenanga meliputi alkaloid, steroid, flavonoid, fenolik, saponin dan tanin.

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Section: Pembahasanunclassified

EFFECTIVENESS OF KENANGA (Cananga odorata (Lam).) FLOWER EXTRACT TO INHIBIT THE GROWTH OF Colletotrichum acutatum (Jenkins & Winstead) CAUSES OF ANTHRACNOSE DISEASE IN CHILI (Capsicum annum L.) PLANT

Agung

Sudirga²,

Darmadi³

2022

SIMBIOSIS

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“…Initially, the fish consumers or respondents were asked for their consent before answering the questions. were extracted by hydrodistillation using Clevenger-type apparatus following procedure describe by [27], with some modification. A mass of 1000 g of dried plant material was put in a pressure pot containing 4 L of water and heated for six hours.…”

Section: Introductionmentioning

confidence: 99%

Preservation Potentials of Essential Oils of Ocimum basilicum and Ocimum gratissimum from Two Agro-Ecological Zones on Freshwater Smoke-Dried Oreochromis niloticus Fish Sold in Some Local Markets in Cameroon

Angu,

Ngwasiri,

Navti

et al. 2023

ABC

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Dried fish are susceptible to bacteria and fungi attack and are liable to chemical changes which cause losses in quality and reduction of shelf-life. It is important therefore to maintain the quality of fish because continuous consumption of contaminated fish and their products may predispose consumers to health hazards. Maintenance of high quality fish therefore calls for adequate and effective preservation techniques. The study examined the effectiveness of essential oils of Ocimum basilicum and Ocimum gratissimum from two Agro-ecological zones of Cameroon in limiting the microbial proliferation and preserving the quality of smoke-dried Oreochromis niloticus fish stored at 25˚C for two months. The plant materials were harvested from the Western Highlands and Monomodal Humid Forest agroecological zones of Cameroon. Extraction of the essential oil from the plants was done by hydro-distillation. The fish species (Oreochromis niloticus) used in this study was chosen based on a survey study on the most consumed species of freshwater smoke-dried fish in the Western Highlands and Monomodal Humid Forest Agro-ecological zones of Cameroon. Heterotrophic bacteria counts, fungi counts and Enterobacteriaceae counts were used to assess the level heterotrophic bacteria, fungi and Enterobacteriaceae respectively in the fish samples during storage and were done by culture techniques using total plate count agar, potato dextrose agar and violet red bile glucose agar respectively.

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“…Many such alternatives that are non-persistent in the environment, selective towards beneficial insects and less toxic to humans have been reported to be used traditionally (Grdisa et al, 2013;Oben et al, 2015). Botanical plants used either in powdered form or extracts such as crude extract or volatile oil have been successful against a number of pests in Africa (Pinto et al, 2015;Chand et al, 2017;Gharsan et al, 2018;Rahayu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Insecticidal activities of volatile oils of lime fruit peels and African black pepper seeds on adult kola weevil and their chemical compositions

Alabi,

Olaoluwa,

Odeyemi

et al. 2023

Afr. Crop Sci. J.

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Balanogastris kolae reduces the quality of stored kolanuts; yet, plants with insecticidal properties could be used to manage this insect pest. The objective of this study was to evaluate the efficacy of plant oils against B. kolae, a storage pest of kolanuts. The Citrus aurantifolia fruit peel and Piper guineense seed volatile oils obtained via hydro-distillation of the dried, pulverised samples were tested. Their chemical composition was determined using Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Adult mortality was generally low (0.0%) across treatments and exposure times, though not significant (P > 0.05) in the fumigant tests The highest mortality (47.5%) was recorded at 24 hours in 1.0% P. guineense, while the mortality was 13.1% occurred at 12 hours in the 15.0% C. aurantifolia concentration. In contact toxicity tests, none of the weevils treated with 10.0% C. aurantifolia survived after 24 hours of exposure. The highest mortality (85.0%) was obtained from the 10.0 and 15.0% P. guineense volatile oil after 96 hours. Citrus aurantifolia elicited contact toxicity against the weevil more than P. guineense across all concentrations. The GC-MS analysis gave 33 compounds in C. aurantifolia and 43 in P. guineense volatile oil samples. The prominent compounds were limonene (3.222%), linalyl isobutyrate (2.484%), gamma-caryophyllene (1.197%) and Patchoulene (6.529%). Therefore, C. aurantifolia fruit peel and P. guineense seed volatile oils are efficacios in controlling Balanogastris kolae insect pest infestation on kolanuts, though C. aurantifolia fruit peel oil is the best as it compares closely with the synthetic pesticide (2,2-dimethyl dichlorovinyl phosphate (DDVP)).

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Antibacterial and antifungal activities of essential oils from medicinal plants found in the South Pacific

Abstract: (DZI) using 0.25, 0.5, 5, 25, 50 and 100% (v/v)

Cited by 6 publications

References 40 publications

EFFECTIVENESS OF KENANGA (Cananga odorata (Lam).) FLOWER EXTRACT TO INHIBIT THE GROWTH OF Colletotrichum acutatum (Jenkins & Winstead) CAUSES OF ANTHRACNOSE DISEASE IN CHILI (Capsicum annum L.) PLANT

EFFECTIVENESS OF KENANGA (Cananga odorata (Lam).) FLOWER EXTRACT TO INHIBIT THE GROWTH OF Colletotrichum acutatum (Jenkins & Winstead) CAUSES OF ANTHRACNOSE DISEASE IN CHILI (Capsicum annum L.) PLANT

Preservation Potentials of Essential Oils of <i>Ocimum basilicum</i> and <i>Ocimum gratissimum</i> from Two Agro-Ecological Zones on Freshwater Smoke-Dried <i>Oreochromis niloticus</i> Fish Sold in Some Local Markets in Cameroon

Insecticidal activities of volatile oils of lime fruit peels and African black pepper seeds on adult kola weevil and their chemical compositions

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Antibacterial and antifungal activities of essential oils from medicinal plants found in the South Pacific

Abstract: (DZI) using 0.25, 0.5, 5, 25, 50 and 100% (v/v)

Cited by 6 publications

References 40 publications

EFFECTIVENESS OF KENANGA (Cananga odorata (Lam).) FLOWER EXTRACT TO INHIBIT THE GROWTH OF Colletotrichum acutatum (Jenkins & Winstead) CAUSES OF ANTHRACNOSE DISEASE IN CHILI (Capsicum annum L.) PLANT

EFFECTIVENESS OF KENANGA (Cananga odorata (Lam).) FLOWER EXTRACT TO INHIBIT THE GROWTH OF Colletotrichum acutatum (Jenkins & Winstead) CAUSES OF ANTHRACNOSE DISEASE IN CHILI (Capsicum annum L.) PLANT

Preservation Potentials of Essential Oils of &lt;i&gt;Ocimum basilicum&lt;/i&gt; and &lt;i&gt;Ocimum gratissimum&lt;/i&gt; from Two Agro-Ecological Zones on Freshwater Smoke-Dried &lt;i&gt;Oreochromis niloticus&lt;/i&gt; Fish Sold in Some Local Markets in Cameroon

Insecticidal activities of volatile oils of lime fruit peels and African black pepper seeds on adult kola weevil and their chemical compositions

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Product

Resources

About

Preservation Potentials of Essential Oils of <i>Ocimum basilicum</i> and <i>Ocimum gratissimum</i> from Two Agro-Ecological Zones on Freshwater Smoke-Dried <i>Oreochromis niloticus</i> Fish Sold in Some Local Markets in Cameroon