Optimalisasi Cara, Suhu, dan Lama Blansing sebelum Pengeringan Kubis
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Indonesian Center for Horticulture Research and Development
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ABSTRAK. Penelitian bertujuan mengetahui media, kombinasi suhu, dan lama blansing yang optimum untuk pembuatan kubis kering. Penelitian dilakukan dari Oktober sampai dengan November 2004. Penelitian menggunakan metode eksperimen di laboratorium menggunakan rancangan acak kelompok pola petak terpisah. Petak utama yaitu media blansing yang terdiri dari (1) media air dan (2) media uap. Anak petak yaitu kombinasi suhu dan lama blansing yang terdiri dari (1) suhu 65°C selama 15 menit, (2) 65°C selama 30 menit, (3) 75°C selama 10 menit, (4) 75°C selama 20 menit, (5) 85°C selama 5 menit, dan (6) 85°C selama 10 menit. Hasil penelitian menunjukkan bahwa interaksi antara media dan kombinasi suhu dan lama blansing berpengaruh terhadap rendemen, rasio rehidrasi, kadar air, dan kandungan vitamin C. Berdasarkan hasil uji organoleptik, kubis kering terbaik adalah hasil perlakuan blansing yang menggunakan media air pada suhu 75°C dengan lama blansing 10 menit. Kubis kering hasil perlakuan ini mempunyai kadar air 7,71%, rendemen 4,32%, rasio rehidrasi 747,24%, dan vitamin C 83,128 mg/100 g.ABSTRACT. Asgar, A. and D. Musaddad, 2006. Optimizing of method, temperature, and time of blanching for processing of dried cabbage. The purpose of this research was to study the effect of method, temperature, and time of blanching on the characteristics of dried cabbage. The research was conducted from October to November 2004. The research was arranged in a split plot design with 2 x 6 factorial, 3 replications and followed by Duncan’s test. Main plot consisted of (1) steam blanching and (2) water blanching. Subplot consisted of temperature and time of blanching (1) 65°C 15 minutes, (2) 65°C 30 minutes, (3) 75°C 10 minutes, (4) 75°C 20 minutes, (5) 85°C 5 minutes, and (6) 85°C 10 minutes. The results showed that interaction between the method, temperature, and time blanching of significantly affect on dry matter, rehydration ratio, moisture, and ascorbic acid content. The organoleptic test of dried cabbage processed with water medium at 75°C for 10 minutes was the best. On this treatment dried cabbage were 7.71% of water content, 4.32% of dry matter, 747.24% of rehydration ratio, and 83.128 mg/100 g of vitamin C.
Keywords
Cabbage; Blanching; Drying; Quality.