POTENSI HIDROLISAT TEMPE SEBAGAI PENYEDAP RASA MELALUI PEMANFAATAN EKSTRAK BUAH NANAS

Abstract

Penelitian bertujuan untuk mendeskripsikan perlunya pengembangan penyedap rasa alternatif berbahan hidrolisat tempe dan proses pembuatannya, menguji jenis asam amino, kadar protein dan uji organoleptik. Metode eksperimen digunakan pada penelitian ini. Pengujian jenis asam amino melalui teknik kromatografi, kadar protein terlarut melalui metode Biuret dan uji organoleptik produk dibandingkan penyedap rasa sintetis. Hasil yang didapatkan adalah pengembangan penyedap rasa hidrolisat tempe perlu dilakukan karena alasan dampak mengkonsumsi penyedap rasa sintetis, pengembangan teknologi, sumber penghasilan dan potensi penelitian. Proses pembuatannya melalui penambahan sari nanas pada tempe yang telah dikukus dan diblender dengan perbandingan tempe:air:sari nanas 1: 0,5:0,5. Pengovenan selama 2 jam pada suhu 55ºC, penambahan dektrin + NaCl (masing-masing sebanyak 0,5 gr/100 gr tempe), pengovenan kembali selama 2 jam pada suhu 55ºC. Perlakuan B2 (pengovenan pada suhu 55ºC selama 2 jam) menghasilkan asam glutamat. Produk ini berpotensi membentuk monosodium glutamat dengan penambahan NaCl. Jumlah protein terlarut dipengaruhi oleh lama pengovenan dan suhu. Produk hidrolisat tempe sebagai penyedap rasa menghasilkan rerata kesukaan warna (3,3 = menarik), aroma (3,9 = sangat suka) dan menghasilkan cita rasa sama jika ditambahakan sebanyak 2 kali dibandingkan penyedap rasa sintetis.

This research was aimed to describe the need for the development of alternative flavor made from hydrolyzated tempe and its manufacturing process, to test the types of amino acid, to measure the protein levels and to test the favor organoleptically. This was an experimental study. The types of amino acid was tested using chromatographic technique, the level of soluble protein was tested using Biuret method and the products were compared organoleptically. The study showed that the development of hydrolyzated tempe flavoring needs to be performed by the reason of the impact of consuming synthetic flavors, the technology development and the research potential. The manufacturing process was done by adding pineapple juice in steamed and blended tempe (the ratio of tempe:water:pineapple juice was 1:0.5:0.5), and then baked for 2 hours at the temperature of 55ºC, added with NaCl + dextrine (each as much as 0.5 g/100 g tempe), baked again for another 2 hours at 55ºC. The treatment B2 (baked at temperature of 55ºC for 2 hours) produced glutamic acid. This product has potentially forms monosodium glutamate with the addition of NaCl. The total soluble protein was affected by the length of the baking time and the temperature. The products i.e. the hydrolyzated tempe as the flavor enhancer yielded an average color preference of 3.3 (i.e. interesting), aroma of 3.9 (i.e. like much), and produced the same taste when using as much as twice volume of the product compared to the synthetic flavors.