11.07.2015 Views

Ilmu Gizi – Vitamin Larut Air - Undip

Ilmu Gizi – Vitamin Larut Air - Undip

Ilmu Gizi – Vitamin Larut Air - Undip

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Thiamin - sifatKristal putih kekuningan larut dalam air Tidak stabil dalam keadaan bebas Tersedia dalam bentuk:Thiamin-HClGaram mono nitrat (lebih stabil thd panas)Bila teroksidasi : menjadi thiochrome (tidak aktif)Dalam keadaan kering cukup stabilDalam keadaan larut air:Keadaan asam: tahan panasKeadaan basa: tidak tahan panas & oksidasiKehilangan pada pemanasan tergantung pada:Lama pemasakanpHSuhuJumlah air yang digunakanTahan suhu beku

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