Peoses Produksi Tepung Porang (Amorphophallus muelleri Blume) Menggunakan Mesin Mill Dryer Vertical dengan Variasi Bahan Baku Chip dan Karakterisasi Kualitas Produk
ANGGI RAHMANINGRUM, Dr. Sri Rahayoe, S.T.P., M.P.; Dr. Joko Nugroho Wahyu Karyadi, S.T.P., M.Eng.
2024 | Skripsi | TEKNIK PERTANIAN
Porang (Amorphophallus muelleri Blume) is a tuber that contains glucomannan, which is beneficial in the fields of food industry, pharmaceutical industry, and chemical industry. Before being utilized, porang tubers must be processed into porang flour first. Good quality porang flour is produced from good raw materials and proper processing methods. The process of making porang flour can be done using various milling machines such as hammer mills, disk mills, and vertical mill dryers. The vertical mill dryer is a complex machine consisting of several main components namely hopper, grinding section, cyclone, and control panel. This research aims to carry out the production process of porang flour using the Vertical Mill Dryer (MDV-50) with variations in raw material of porang chip and product quality characterization.
Three types of porang chips, namely commercial chips from Wonogiri, cabinet dryer drying chips, and commercial chips from West Java, are ground using a Vertical Mill Dryer and produce flour which is then sieved using Tyler sieves to obtain flour with different particle sizes. The flour remaining on sieves with sizes of 50, 60, and 80 mesh is further sieved using a blowing method for 7 cycles. The quality of the porang flour produced is evaluated by conducting tests for moisture content, ash content, whiteness, density, particle size, viscosity, glucomannan content, and calcium oxalate content. The resulting data is then analyzed using ANOVA to assess the influence of raw material variations on the characteristics of the produced porang flour.
The research results show the quality of porang flour products produced using the MDV-50 setting with a combination of screw speed of 20 Hz and SPV speed of 4 Hz. The measured moisture content of porang flour ranges from 10.43-11.34 % w.b, ash content of porang flour ranges from 3.52-4.9 %, whiteness of porang flour ranges from 61.64-68.78, viscosity ranges from 222.22-2,297 mPa.s, water activity ranges from 0.57-0.61, density ranges from 0.59-0.77 g/m³, calcium oxalate content ranges from 0.53-0.99 %, and glucomannan content ranges from 50.05-70.61 % dry weight
Kata Kunci : Kualitas tepung, Mill Dryer Vertical (MDV-50), Tepung porang