MUFIDAH SAVITRI, NADIAH HUMAIROH (2023) KARAKTERISASI BIODEGRADABLE FILM SEMI REFINED KAPPA KARAGENAN DARI Kappaphycus alvarezii (Doty ex P.C. Silva, 1996) DENGAN PENAMBAHAN PLASTICIZER SORBITOL (23dik297). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Nadiah Humairoh Mufidah Savitri. 26040119130130. Karakterisasi Biodegradable Film Semi Refined Kappa Karagenan dari Kappaphycus alvarezii (Doty ex P.C. Silva, 1996) dengan Penambahan Plasticizer Sorbitol. Sri Sedjati & Ali Ridlo)
Proses dekomposisi plastik perlu waktu lama sehingga dibutuhkan bahan pengganti yang lebih ramah lingkungan. Biodegradable film dapat dijadikan solusi karena terbuat dari polisakarida yang mudah terurai. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan plasticizer sorbitol terhadap karakteristik biodegradable film SRC dengan tingkat kemurnian rendah yang diekstraksi dari rumput laut K. alvarezii meliputi kuat tarik, elongasi, ketahanan air, ketebalan, dan biodegradasi. Konsentrasi SRC yang digunakan dalam penelitian sebanyak 1,5%. Penelitian ini menggunakan metode Rancangan Acak Lengkap (RAL) yang terdiri atas 4 kelompok perlakuan yaitu sorbitol 0% (S0), sorbitol 2% (S2), sorbitol 4% (S4), dan sorbitol 6% (S6). Setiap kelompok perlakuan diulang sebanyak lima kali. Data dianalisis dengan metode eksploratif secara deskriptif untuk kuat tarik dan elongasi. Analisis statistik inferensia dengan One-Way ANOVA dan uji Tukey Honestly Significant Difference (HSD) pada taraf uji nyata 5 % digunakan pada data ketahanan air, ketebalan, dan biodegradasi. Hasil penelitian menunjukkan bahwa semakin tinggi penambahan sorbitol, maka kuat tarik yang dihasilkan lebih rendah namun elongasi lebih tinggi. Pemberian sorbitol berpengaruh nyata (p<0,05) terhadap ketahanan air, ketebalan, dan biodegradasi. Perlakuan terbaik terdapat pada penambahan sorbitol 4% (S4) dengan kuat tarik sebesar 3,992 N/mm2 , elongasi 28,47%, ketahanan air 43,98%, ketebalan 239,96 µm, dan tingkat biodegradasi sebesar 74,41 %.
Kata Kunci : biodegradasi; elongasi; ketahanan air; ketebalan; kuat tarik.

ABSTRACT
(Nadiah Humairoh Mufidah Savitri. 26040119130130. Characterization of Biodegradable Film Semi Refined Kappa Carrageenan from Kappaphycus alvarezii (Doty ex P.C. Silva, 1996) with the Addition of Sorbitol Plasticizer. Sri Sedjati & Ali Ridlo)
Plastic takes a long time to decompose completely, emphasizing the need for environmentally friendly substitute materials. Biodegradable films can be a solution because they are made from polysaccharides that easily decompose. This study aims to determine the effect of sorbitol plasticizer addition on the characteristics of biodegradable SRC films with low purity level extracted from Kappaphycus alvarezii seaweed which include tensile strength, elongation, water resistance, thickness, and biodegradation. The SRC concentration utilized in this study was 1,5%. This study used a completely randomized design (CRD) with four types of treatment group, namely 0% sorbitol (S0), 2% sorbitol (S2), 4% sorbitol (S4), and 6% sorbitol (S6). Each treatment was conducted five times. Data were analyzed using a descriptive exploratory method for tensile strength and elongation. Inferential statistical analysis of data using One-Way ANOVA and Tukey's Honestly Significant Difference (HSD) test at least 5% significance level was used for water resistance, thickness, and biodegradation. The results showed that as sorbitol increased, the value of the tensile strength decreased but the elongation increased. The results and analysis of the data showed that the addition of sorbitol had a significant effect (p<0.05), including its solubility, thickness, and biodegradation. The best treatment was obtained by the addition of 4% sorbitol (S4) concentration with tensile strength of 3.992 N/mm2 , elongation of 28.47%, water resistance of 43.98%, thickness of 239,96 µm, and biodegradation rate of 74.41%.
Keywords: biodegradation; elongation; tensile strength; thickness; water resistance.

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