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Drying

Drying. Widelia Ika Putri , S.T.P., M.Sc. Drying. One of the most ancient method of food preservation known to mankind. Preservation of meat, fish, and other food by drying in the sun has been practiced since prehistoric times.

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Drying

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  1. Drying WideliaIkaPutri, S.T.P., M.Sc

  2. Drying • One of the most ancient method of food preservation known to mankind. • Preservation of meat, fish, and other food by drying in the sun has been practiced since prehistoric times. • By definition, removal water by evaporation from a solid or liquid food, with the process of obtaining solid product sufficiently low in water content. March 2012

  3. Main technological objectives • Preservation • Reduction in weight and volume • Transformation of food to a form more convenient to store, package, transport, and use (ex: instant product) • Imparting to a food product a particular desirable feature such as a different flavor, crispiness, chewiness, etc (ex: transformation of grapes to raisins). March 2012

  4. Proses pengeringan dapat mengawetkan bahan pangan karena sebagian air dalam bahan pangan dihilangkan sehingga mikroba pembusuk tidak dapat tumbuh pada jumlah air yang terbatas • Demikian pula enzim yang dapat menstimulasi reaksi-reaksi kimia dalam bahan pangan tidak dapat aktif tanpa air. March 2012

  5. Dua proses penting yang terjadi dalam pengeringan : • Pindah panas yang mengakibatkan penguapan air • Pindah massa yang menyebabkan pergerakan air atau uap air melalui bahan pangan yang kemudian mengakibatkannya terpisah dari bahan pangan March 2012

  6. KlasifikasiProsesPengeringan Company name

  7. Company name

  8. PSYCHROMETRIC CHART • Psychrometryadalahkajian yang mempelajarisifat-sifat yang salingberkaitandalam system udara-uap air. • Sifat-sifatiniditunjukkandalamPsychrometric Chart. Company name

  9. Drying Equipment • Tray dryers • Tunnel dryers • Roller / drum dryers • Fluidized bed dryers • Spray dryers • Pneumatic dryers • Rotary dryers • Through dryers • Bin dryers • Belt dryers • Vacuum dryers • Freeze dryers Company name

  10. Thank You ! WideliaIkaPutri, S.T.P., M.Sc www.themegallery.com

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