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INTISARI Whey merupakan cairan yang dihasilkan dari pemisahan curd (keju) dimana pemanfaatannya masih sangat kurang sehingga dapat menyebabkan pencemaran lingkungan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh konsentrasi starter terhadap kadar alkohol, pH, dan total asam tertitrasi pada whey kefir. Whey yang telah dipasteurisasi ditambahkan starter dengan konsentrasi 5, 7, dan 9% (w/v) kemudian diinkubasi pada suhu 20°C selama 24 jam. Metode penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 3 ulangan. Perlakuan yang digunakan yaitu susu sapi dengan starter 5% sebagai kontrol (T0), whey dengan starter 5% (T1), whey dengan starter 7% (T2), dan whey dengan starter 9% (T3). Data dianalisis menggunakan Analysis of Variance (ANOVA) dan dilanjutkan dengan uji Duncan Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa semakin meningkat konsentrasi starter maka semakin tinggi kadar alkohol dan cenderung meningkatkan nilai total asam tertitrasi (TAT). Kata kunci: Kadar Alkohol, Kefir , pH, Total Asam Tertitrasi, Whey ABSTRACT Whey is a liquid produced from the separation of curd that its utilization is still very limited, so it can cause environmental pollution. The purpose of this study was to determine the effect of starter concentration on alcohol, pH, and total titrated acids in whey kefir. Pasteurized whey was added starter with concentration of 5, 7, and 9% (w/v) then incubated at 20°C for 24 hours. The research method used was Completely Randomized Design (CRD) with 3 treatments and 3 replications. The treatment used was cow milk added 5% starter as control (T0), whey added starter 5% (T1), whey added starter 7% (T2), and whey added starter 9% (T3). The data were analyzed using Analysis of Variance (ANOVA) and continued by Duncan Multiple Range Test (DMRT). The results showed that the higher starter concentration, the higher the alcohol content and tend to increase the total value of titrated acids (TTA). Keyword s : Alcohol, Kefir, pH, Total Titrated Acid , Whey

Pengaruh Konsentrasi Starter Terhadap Kadar Alkohol, pH, dan Total Asam Tertitrasi (Tat) Whey Kefir