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  • Modification of food proteins   (1 ÆäÀÌÁö)
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Modification of food proteins

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Modificationoffoodproteins
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1) ´Ü¹éÁú º¯Çü (Protein modification)

2) º¯Çü ¹æ¹ý

3) ½ÄÇ°°¡°ø¿¡¼­ ´Ü¹éÁúÀÇ º¯Çü ¸ñÀû

1. È­ÇÐÀû º¯Çü (Chemical modification)

2. È¿¼ÒÀû º¯Çü (enzymatic modification)

3. ¹°¸®Àû º¯Çü (Physical modification)

º»¹®/³»¿ë
(3) ½Ã½ºÅ×ÀÎ(cysteine)°ú ½Ã½ºÆ¾(cystine)ÀÇ »êȭȯ¿ø ¹ÝÀÀ
¨ç ¾ÆȲȭ -S-S- °áÇÕÀº ´Ü¹éÁúÀÇ Æ¯¼º¿¡ °­ÇÑ ¿µÇâÀ» ÁÜ
¨è ±¸¸®ÀÌ¿ÂÀ̳ª ´Ù¸¥ »êÈ­Á¦·Î ÀÎÇÑ °¡¿ª¼º ¹ÝÀÀ

(4) ÀλêÈ­ ¹ÝÀÀ (phosphorylation)
¨ç Ä«Á¦Àΰú °°Àº ¿©·¯ °¡Áö õ¿¬ ´Ü¹éÁúÀº ÀδܹéÁúÀÌ´Ù
¨è ÀλêÈ­µÈ ´Ü¹éÁúÀº Ä®½·À̿¿¡ ¹Î°¨ÇÏ¿© ÀÀ°í ¹ÝÀÀ ÀϾ
- Ä¡Áî µîÀÇ Á¦Ç°»ý»ê¿¡ ¿ëÀÌ
¨é ´Ü¹éÁúÀº POCl3¿Í ¹ÝÀÀÀ¸·Î ÀλêÈ­
¨ê ÀλêÈ­ ¹ÝÀÀÀ¸·Î ´Ü¹éÁúÀÇ Àü±âÀ½¼ºµµ Å©°Ô Áõ°¡

(5) Isopeptide bond
¨ç ½Ä¹° ´Ü¹éÁúÀÇ lysineÀ̳ª methionineÀÇ ºÎÁ·Àº À̵éÀ» ´Ü¹éÁúÀÇ lysyl ±× ·ì¿¡ °áÇÕ½ÃÄÑ ¿µ¾ç°¡ °³¼±
¨è lysineÀ̳ª methionineÀÇ N-carboxy anhydride¸¦ ´Ü¹éÁúÀÇ ±Ø¼ººÎÀ§¿Í isopeptide °áÇÕ½ÃÅ´
¨é ¼ö¿ë¾×»ó¿¡¼­ ºÒ¾ÈÁ¤ÇÏ¿© ÀûÀº¾çÀÇ ¼öºÐ¿¡¼­µµ Áï½Ã¹ÝÀÀ
¨ê Isopeptide´Â ÃéÀå petidase¿¡ ÀÇÇØ °¡¼öºÐÇØµÇ¾î »ý¹°ÇÐÀû ÀÌ¿ë°¡´É

(6) ¶ó¼¼¹ÌÈ­ (racemization)
¨ç ¾ËÄ®¸® ó¸®ÇÏ¿© carbanion »ý¼º ÈÄ »êÀ» °¡ÇÏ¿© ÁßÈ­½ÃÄÑ L-°ú D-¾Æ¹Ì ³ë»ê »ý¼º
¨è D-¾Æ¹Ì³ë»êÀÇ °æ¿ì ÀåÁ¡¸·¿¡¼­ Èí¼öµÇÁö ¾Ê¾Æ ´Ü¹éÁú ¼ÒÈ­¼º ÀúÇÏ
¨é D-prolineÀº ´ß¿¡¼­ ½Å°æµ¶¼º
(7) ´Ü¹éÁú¡¦(»ý·«)


ÀÚ·áÁ¤º¸
ID : tady******
Regist : 2014-05-08
Update : 2014-05-08
FileNo : 16170481

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Modification   food   proteins  


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