Valentine, Carolin (2021) Aktivitas antifungal Bacillus amyloliquefaciens D9 dan Lactobacillus plantarum F75 terhadap Aspergillus welwitschiae dan Penicillium sp. = Antifungal activity of Bacillus amyloliquefaciens D9 and Lactobacillus plantarum F75 against Aspergillus welwitschiae and Penicillium sp. Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Jamur merupakan organisme eukariot yang dapat ditemukan dimana saja baik air, udara maupun tanah. Jamur terbagi menjadi tiga jenis, yakni kapang, khamir, dan cendawan. Jamur dapat digunakan menjadi bahan makanan dan bahan
obat-obatan. Namun, sebagian jamur terutama kapang dan khamir bersifat merugikan dan menyebabkan pembusukan pada makanan dan buah. Untuk mengatasi pembusukan oleh jamur, diperlukan zat antifungal. Zat antifungal dapat berasal dari ekstrak komponen bakteri. Maka dari itu, penelitian ini bertujuan untuk mengidentifikasi aktivitas dari bakteri B. amyloliquefaciens D9 dan L. plantarum F75 terhadap Aspergillus welwitschiae dan Penicillium sp. dengan metode zona inhibisi whole cell, serta identifikasi gen antifungal L. plantarum F75 guna untuk memperluas penemuan obat antifungal baru. B. amyloliquefaciens dikenal mempunyai komponen antifungal yang dihasilkan dari lipopeptida dan komponen volatil berupa myriocin, iturin A, 2-nonanone, dan lainnya. Sedangkan, L. plantarum diketahui menghasilkan komponen antifungal yakni siklik dipeptida dan asam organik berupa asam laktat, fenillaktat, asetat, dan formiat. Pada
penelitian ini dilakukan uji aktivitas antifungal dengan metode whole cell dan identifikasi gen antifungal dari genom L. plantarum F75 dengan RAST-PATRIC. Dari penelitian ini diketahui bahwa B. amyloliquefaciens D9 dapat menghasilkan komponen antifungal yang dapat menghambat A. welwitschiae dan Penicillium sp.
Sedangkan, L. plantarum F75 tidak menunjukkan aktivitas hambatan. Namun, identifikasi gen pada RAST diketahui bahwa L. plantarum F75 dapat menghasilkan asam laktat, asam asetat dan asam formiat yang dapat memberikan
efek antifungal. / Fungi are eukaryotic organisms that can be found everywhere, including in air and
soil. Fungi are divided into three types, namely molds, yeasts and mushrooms. Fungi are commonly used as food and medicine. However, some fungi, especially molds and yeasts, can cause spoilage in food and fruit. To treat spoilage caused by fungi, antifungal substances are needed. Antifungal substances can be derived from extracts of bacterial components. Therefore, this study aims to identify the activity of B. amyloliquefaciens D9 and L. plantarum F75 bacteria against Aspergillus welwitschiae and Penicillium sp., as well as to identify antifungal genes of L. plantarum F75. B. amyloliquefaciens is known to have antifungal
components produced from lipopeptides and volatile components in the form of myriocin, iturin A, 2-nonanone and others. Meanwhile, L. plantarum is known to
produce antifungal components, namely cyclic dipeptides and organic acids in the form of lactic, phenyllactic, acetic, and formic acids. In this study, the potential
antifungal activity of B. amyloliquefaciens D9 and L. plantarum F75 were tested using the whole cell method. Subsequently, identification of antifungal genes from
the L. plantarum F75 genome was conducted using the RAST-PATRIC, due to the availability of whole-genome data of this isolate. We observed that while B. amyloliquefaciens D9 could produce antifungal components, L. plantarum F75
did not show any inhibitory activity. However, identification of genes in RAST revealed that L. plantarum F75 has potential antifungal compounds in the form of lactic acid, acetic acid and formic acid.
Item Type: | Thesis (Bachelor) |
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Creators: | Creators NIM Email ORCID Valentine, Carolin NIM01113170018 carolinvalentine@gmail.com UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Jo, Juandy NIDN0320057902 astia.sanjaya@uph.edu Thesis advisor Sanjaya, Astia NIDN0325068902 juandy.jo@uph.edu |
Uncontrolled Keywords: | Bacillus amyloliquefaciens D9; Lactobacillus plantarum F75,bacteria; Aspergilus welwitschiae; Penicillium sp.; fungi; antifungal; inhibition zone; genome annotation |
Subjects: | Q Science > QH Natural history > QH301 Biology |
Divisions: | University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Biology Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Biology |
Depositing User: | Users 4979 not found. |
Date Deposited: | 24 Sep 2021 03:22 |
Last Modified: | 28 Mar 2022 01:59 |
URI: | http://repository.uph.edu/id/eprint/42545 |