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Empirical Characteristic

Empirical Characteristic Of Dried Sliced-straw Mushroom ( Volvariella Volvacea ) Drying By Far-infrared Ridwan Rachmat , Resa Andriadi , Mulyana Hadipernata Indonesian Center For Agricultural Post Harvest Research & Development (ICAPRD)

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Empirical Characteristic

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  1. Empirical Characteristic Of Dried Sliced-straw Mushroom (VolvariellaVolvacea) Drying By Far-infrared RidwanRachmat, ResaAndriadi, MulyanaHadipernata Indonesian Center For Agricultural Post Harvest Research & Development (ICAPRD) IAARD-ministry Of Agriculture Of The Republic Of Indonesia

  2. Straw Mushroom In Indonesia Quality and Quantity Losses of Vegetable have been 25-40% (Muchtadi, 2000) The most part of vegetable is water (81-96%), Low Protein (0,6-4,6%), Low fat (0,1-1,0%), Low Carbohydrate 2,99-11,3% (Muchtadi,2000) Moisture to be reduced in vegetable is around 20% to 80% or Drying load required 11,5 to 32 MJ of energy

  3. Need the Improvement of straw mushroom production environment

  4. Need the Improvement of straw mushroom production environment

  5. TEMPERATURE IR R G RAYS V UV 4. FAR INFRARED RAY AND WAVELENGTH INFRARED LEVEL : NIR : 0,78 – 1,4 ΜM MID – IR : 1,4 – 3 ΜM FAR – IR : 3 – 1000 ΜM ABSORBABLE WAVE BY FOOD : 2 – 20 ΜM (HASHIMOTO, 1992)

  6. Molecules of H2O FIR Molecule of material FIR cut the combined of the molecule The molecule of the moisture is combined Moisture adheres surface of the material FIR H H H O CH FIR re-activates the material molecules CH Moisture rushes into air C C H C-O CH Continue… Radiated absorption occurred at the entire of dynamic molecules of material with oscillation frequency as electromagnetic wave of FIR, and resulted in temperature increase Fig. Heating and moisture reduction process with FIR

  7. FAR INFRARED DRYER PATENT REG.S00200400184

  8. Continue… Volvariella volvacea Cleaning 3-4 mm thickness Slicing 0.1% natrium meta bisulphyte solution Blanching Drying FIR dryer, 600C Chemical test Physical test - Moisture content - Rehydration test • Ascorbic acid • VRS • Chlorophyll Fig.3. Drying procedure

  9. The relationship between drying rate and thermal radiation temperature DR = 4,4268e -0,017 θ 50 ≤ T < 100oC where : DR : drying rate (%/min.) T : temperature (oC) θ : time (minute) Continue…

  10. Continue… Table 1. Color of fresh and dried slice mushroom Table 2. Quality between fresh and dried slice mushroom

  11. Wassalamu’alaikum WrWb TerimaKasih

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