Shelf Life Estimation of Instant Noodle From Sago Starch and Catfish (Pangasius SP.) Using Accelerated Method

The research purpose was to estimate the shelf life of noodle from sagostarch and catfish (Pangasius sp.). Shelf life is one of the requirements that mustbe met before marketing of food products. Shelf life estimation was using theaccelerated method of observation of instant noodles for 28 days at three differenttemperatures namely 35°C, 45°C and 55°C. Parameters observed during thestorage process were the assessment of sensory level of rancidity and TBA value.Results show that shelf life of sago instant noodle by organoleptic assessment was35,81 days and the shelf life of sago instant noodle by TBA value was 44,85 daysat a temperature of 27oC. For food quality and safety reason, the shorter shelf lifeperiod (35,81 days) was choosen as shelf life of sago instant noodle

Uji Performa Serat Batang Pinang Raja Menjadi Kotak Speaker Tipe Single Reflex Bandpass dengan Matrik Poliuretan dan Gipsum

This research is directed to test the performance of sound absorption in speaker box single reflex bandpass types of fiber rod roystonea regia with a polyurethane matrix and gypsum. The variables of this study changes the frequency into 3 types namely, 125, 250 and 500 Hz then the sound pressure changes into 10 types namely, 31,5, 63, 125, 250, 500, 1000, 2000, 4000, 8000 and 16000 Hz. Making materials research begins by cutting the stem roystonea regia, splitting, drying, taking fiber, chopping, blending, sifting, make three types of sheet-shaped mold, mixing polyurethane with gypsum and scored specimens. Making materials research box single reflex bandpass type speakers which are then tested by the method of reverberation chamber and the sound pressure (SPL). From the sound performance test results it was concluded for the highest sound absorption at a frequency of 500 Hz with a value of 0,8514 which is included into class B in accordance with the standard values allowed by the ISO 11654 (1997) and sound pressure (SPL) is highest at a frequency of 125 Hz with value of 75,8 dB which is evidence that the speaker manifold support tool bass (low frequency). While the value of the sound pressure (SPL) in a circle on the axes X, Y and Z obtained the highest average value of 57 dB on the axis Y3 and the lowest average value of 51,59 dB on axis X2