KARAKTERISTIK MINUMAN FERMENTASI SARI UBI JALAR KUNING (Ipomoea batatas L.)

IRAWAN, AGUSTAM and Pratama, Filli and Wijaya, Agus (2014) KARAKTERISTIK MINUMAN FERMENTASI SARI UBI JALAR KUNING (Ipomoea batatas L.). Undergraduate thesis, Sriwijaya University.

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Abstract

Penelitian ini bertujuan untuk menganalisis karakteristik minuman fermentasi sari ubi jalar kuning (Ipomoea batatas L.) terutama fisik, kimia, sensoris dan mirobiologi dengan penambahan konsentrasi ragi dan waktu fermentasi yang berbeda. Penelitian dilaksanakan pada bulan Februari 2014 sampai dengan Juni 2014 di Laboratorium Kimia Hasil Pertanian, Laboratorium Mikrobiologi Umum, dan Laboratorium Sensoris Jurusan Teknologi Pertanian, Fakultas Pertanian, Universitas Sriwijaya, Indralaya. Penelitian menggunakan metode Rancangan Acak Kelompok Faktorial (RAKF) dengan 2 (dua) faktor perlakuan dan setiap kombinasi perlakuan diulang sebanyak 3 (tiga) kali. Faktor A adalah konsentrasi ragi (Al : 0,25%, A2 : 0,50%, A3 : 0,75% dan A4 : 1%) dan faktor B adalah waktu fermentasi (BI : 2 jam, B2 : 4 jam). Parameter yang diamati adalah karakteristik fisik (warna), karakteristik kimia (kadar karoten total, total padatan terlarut, kadar gula reduksi, dan nilai pH), dan karakteristik mikrobiolgi (angka lempeng total), serta karakteristik sensoris (warna, aroma dan rasa). Hasil penelitian menunjukkan bahwa konsentrasi ragi berpengaruh nyata terhadap yellowness (b*). Waktu fermentasi berpengaruh nyata terhadap Lightness (L*), yellowness (b*), nilai pH, dan kadar gula reduksi. Perlakuan terbaik adalah AIBI (konsentrasi ragi 0,25% dan waktu fermentasi 2 jam) dengan karakteristik wama (Lightness (L*) 56,40%, redness (a*) 4,77%, yellowness (b*) 21,45%, AE* 3,00, karakteristik kimia (kadar karoten total 1,13 ppm, total padatan terlarut 12,30°Brix, nilai pH 6,02, kadar gula reduksi 2,77 g/mL), karakteristik mikrobiologi (angka lempeng total 9,42 log cfu/mL), dan karakteristik sensoris (wama 2,48, aroma 2,52, dan rasa 2,44).

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Sari buah Ubi Jalar
Subjects:	S Agriculture > S Agriculture (General) > S560-571.5 Farm economics. Farm management. Agricultural mathematics. Including production standards, record keeping, farmwork rates, marketing
Divisions:	05-Faculty of Agriculture > 41231-Agricultural Product Technology (S1)
Depositing User:	Mr Halim Sobri
Date Deposited:	10 Jun 2022 05:30
Last Modified:	10 Jun 2022 05:30
URI:	http://repository.unsri.ac.id/id/eprint/71682

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