dc.contributor.advisor | Halimatuddahliana | |
dc.contributor.author | Priaji, Tito | |
dc.date.accessioned | 2021-09-13T02:59:41Z | |
dc.date.available | 2021-09-13T02:59:41Z | |
dc.date.issued | 2021 | |
dc.identifier.uri | http://repositori.usu.ac.id/handle/123456789/43049 | |
dc.description.abstract | Research on the potential of ZnO nanoparticles as anti-bacteria and polyethylene glycol as an additive on the bioplastic characteristics of mango seed starch has been carried out. ZnO is used as an anti-bacterial agent and also acts as a reinforcement added to the bioplastic components of mango seed starch with a variation of 0.0.5.1 and 1.5 grams of starch weight. Polyethylene glycol as an additive which is used as plasticizer is also added to the bioplastic component of mango seed starch with variations of 0.2.5.5 and 10 ml of starch weight. Based on the test results, it was found that the addition of ZnO and polyethylene glycol plasticizers to mango starch bioplastics decreased the tensile strength and increased the elongation value at break. The highest tensile strength value was shown by the bioplastic sample without PEG 0 and ZnO 1.5g plasticizers, namely 20.59 MPa. The highest elongation value at break was shown by the bioplastic sample with a variation of 10ml polyethylene glycol and 0 ZnO, namely 4.97%. The addition of ZnO and polyethylene glycol plasticizer had an impact on increasing the density of the bioplastic. The highest denstas value was shown by the bioplastic sample with a variation of 10ml polyethylene glycol and 1.5g ZnO, namely 1.815 g / cm3. The water absorption value of bioplastics increased with the increase of polyethylene glycol plasticizers but decreased with the increase of ZnO The highest water absorption was shown by samples with 10ml polyethylene glycol and without the addition of ZnO 0 which was 69.85%. The results of the research on the anti-bacterial activity of ZnO showed that ZnO was able to show a strong inhibition of bacteria (Bacillus cereus). The addition of polyethylene glycol plasticizers can also increase the inhibition of bacteria (Bacillus cereus). The best anti-bacterial inhibition is the composition of ZnO 1.5g with the addition of 10ml polyethylene glycol. The optimum composition of ZnO and polyethylene glycol includes anti-bacterial activity, water absorption, density, tensile strength and elongation at break of the bioplastic at 0 and 1.5g ZnO and 0 and 10ml PEG. | en_US |
dc.description.abstract | Penelitian mengenai potensi nanopartikel ZnO sebagai anti bakteri dan polietilen glikol sebagai bahan aditif pada karakteristik bioplastik pati biji mangga telah dilakukan. ZnO digunakan sebagai anti baketri serta berperan juga sebagai penguat ditambahkan ke komponen bioplastik pati biji mangga dengan variasi 0.0,5.1 dan 1,5 gr dari berat pati. Polietilen glikol sebagai bahan aditif yang gunanya sebagai pemlastis juga ditambahkan kedalam komponen bioplastik pati biji mangga dengan variasi 0.2,5.5 dan 10 ml dari berat pati. Berdasarkan hasil pengujain diproleh bahwa Penambahan ZnO dan pemlastis polietilen glikol pada bioplastik pati mangga menurunkan nilai kuat tarik dan meningkatkan nilai perpanjangan saat putus. Nilai kekuatan tarik tertinggi ditunjukkan sampel bioplastik tanpa pemlastis polietilen glikol 0 dan ZnO 1,5g yaitu 20,59 MPa. Nilai pemanjangan saat putus tertinggi ditunjukkan sampel bioplastik dengan variasi polietilen glikol 10ml dan ZnO 0 yaitu 4,97%. Penambahan ZnO dan pemlastis polietilen glikol berdampak pada meningkatnya densitas bioplastik. Nilai denstas tertinggi ditunjukkan sampel bioplastik dengan variasi polietilen glikol 10ml dan ZnO 1,5g yaitu 1,815 g/cm3- .Nilai penyerapan air bioplastik meningkat dengan bertambahnya pemlastis polietilen glikol tetapi menurun dengan bertambahnya ZnO. Penyerapan air tertinggi ditunjukkan oleh sampel dengan polietilen glikol 10ml dan tanpa penambahan ZnO 0 yaitu sebesar 69,85%. Hasil penelitian aktivitas anti bakteri ZnO menunjukkan ZnO mampu menujukkan penghambatan yang kuat pada bakteri (Bacillus cereus). Penambahan pemlastis polietilen glikol juga dapat meningkatkan penghambatan bakteri (Bacillus cereus). Penghambatan anti bakteri terbaik adalah pada komposisi ZnO 1,5g dengan penambahan polietilen glikol 10ml. Komposisi ZnO dan polietilen glikol yang optimum digunakan meliputi aktivitas anti bakteri, Penyerapan air, densitas, kuat Tarik dan pemanjangan saat putus bioplastik adalah pada ZnO 0 dan 1,5g serta PEG 0 dan 10ml. | en_US |
dc.language.iso | id | en_US |
dc.publisher | Universitas Sumatera Utara | en_US |
dc.subject | anti bacterial | en_US |
dc.subject | bioplastic | en_US |
dc.subject | ZnO | en_US |
dc.subject | gelatinization | en_US |
dc.subject | polyethylene glycol | en_US |
dc.subject | anti bakteri | en_US |
dc.subject | bioplastik | en_US |
dc.subject | gelatinisasi | en_US |
dc.subject | polietilen glikol | en_US |
dc.title | Kajian Pengaruh Penambahan Pemlastis Polietilen Glikol dan Anti Bakteri Seng Oksida Terhadap Karakteristik Bioplastik Pati Biji Mangga (Mangifera Indica) | en_US |
dc.type | Thesis | en_US |
dc.identifier.nim | NIM150405097 | |
dc.description.pages | 89 Halaman | en_US |
dc.description.type | Skripsi Sarjana | en_US |