เอกสารการประชุมวิชาการและเสนอผลงานวิจัย มหาวิทยาลัยทักษิณ ครั้งที่ 19 2552 - page 831

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˜µ¦µŠš¸É 3 ž¦·¤µ–µ¦ž¦³„°¢eœ°¨·„š´ÊŠ®¤— °Šµ¦„´ —‹µ„Áž¨º°„ oµª 5 µ¥¡´œ›»r š¸É „´——oª¥ 50 ¨³ 70%
Á°šµœ°¨
µ¥¡´œ›»r ž¦·¤µ–µ¦¢eœ°¨¨·„š´ÊŠ®¤— (¤·¨¨·„¦´¤ °Š ferulic acid/„¦´ ¤Áž¨º°„ oµªŸŠ)
50% Á°šµœ°¨ 70% Á°šµœ°¨
oµªÁŒ¸Ê¥Š¡´š¨»Š 8.67 ± 0.22 9.96 ± 0.07
oµªÁ¨Èœ„ž{˜˜µœ¸ 1.68 ± 0.66 3.29 ± 0.22
oµª´Š r®¥— 13.50 ± 0.58 24.06 ± 0.14
oµªÁ‹oµ¡´ š¨»Š 10.15 ± 0.38 11.60 ± 0.26
oµªÁ Ȥš°Š¡´š¨»Š 17.63 ± 0.51 26.56 ± 0.07
¤´˜·„µ¦˜oµœ°°„Ž·Á—´œ °Šµ¦„´—‹µ„Áž¨º °„ oµª
„·‹„¦¦¤„µ¦˜oµœ°°„Ž· Á—´œÃ—¥ª·›¸ DPPH-radical scavenging activity ¨³ª·›¸ reducing power °Šµ¦
„´—‹µ„Áž¨º °„ oµª 5 µ¥¡´œ›»rš¸É „´——o ª¥ 50 ¨³ 70% Á°šµœ°¨ —Š—´Š˜µ¦µŠš¸É 4 ª·›¸ DPPH Áž}œ„µ¦ª´ —
‡ªµ¤µ¤µ¦™ °Šµ¦„´—Äœ„µ¦¥´¥´ÊŠ°œ» ¤¼¨°· ¦³ DPPH š¸ÉÁ„·— ¹Êœ Ž¹É Š‹³ª´—°°„¤µÁž}œ % Radical scavenging
activity ¡ªnµµ¦„´—‹µ„Áž¨º °„ oµªš¸É „´——oª¥ 70% Á°šµœ°¨¤¸‡nµ DPPH-radical scavenging activity ¼Š„ªnµµ¦
„´— 50 % Á°šµœ°¨ (p>0.05) ˜n°¥n µŠÅ¦„Șµ¤Å¤n¡‡ªµ¤´ ¤¡´œ›r¦³®ªnµŠ‡ªµ¤µ¤µ¦™Äœ„µ¦Áž}œµ¦˜oµœ
°°„Ž· Á—´œ„´ž¦·¤µ–µ¦ž¦³„°¢¨µÃªœ°¥—rš´Ê Š®¤—®¦º°µ¦ž¦³„°¢eœ°¨·„š´ÊŠ®¤—Äœµ¦„´ —‹µ„Áž¨º°„
oµªš¸É „´——o ª¥ 50 ¨³ 70% Á°šµœ°¨ Kahkonen ¨³‡–³ (1999) ¦µ¥ŠµœªnµÅ¤n¡‡ªµ¤´¤¡´œ›r¦³®ªn µŠ
µ¦ž¦³„°¢eœ°¨·„š´Ê Š®¤—„´‡ªµ¤µ¤µ¦™Äœ„µ¦Áž}œµ¦˜oµœ°°„Ž·Á—´ œ °Šµ¦„´—‹µ„¡º  °¥nµŠÅ¦„Șµ¤
Garcia-Alonso ¨³‡–³ (2004) ¡‡ªµ¤´ ¤¡´œ›rÁ¨È „œo°¥¦³®ªn µŠµ¦ž¦³„°¢¨µÃªœ°¥—r š´ÊŠ®¤—„´ 
‡ªµ¤µ¤µ¦™Äœ„µ¦Áž}œµ¦˜oµœ°°„Ž·Á—´ œÄœŸ¨Å¤o Áž¨º°„ oµª¡´ œ›»r ´Š r®¥—š¸É „´——oª¥ 70% Á°šµœ°¨¤¸‡nµ
DPPH-radical scavenging activity ¼ Šš¸É »—Ášnµ„´ 18.03% Pinelo et al. (2004) «¹„¬µŸ¨ °Š˜´ªšÎ µ¨³¨µ¥ ŗo„n
Á°šµœ°¨ Á¤šµœ°¨ ¨³œÊε ˜n°‡ªµ¤µ¤µ¦™˜o µœ°°„Ž·Á—´œ °Šµ¦„¨»n¤¢¨µÃªœ°¥—r ‡º° quercetin ×¥¡ªnµ
quercetin ĜÁ°šµœ°¨¤¸ ¤´˜·Äœ„µ¦˜oµœ°œ»¤¼¨°· ¦³ DPPH —¸š¸É »— ¦°Š¨Š¤µ‡º° Á¤šµœ°¨ ¨³œÊ嘵¤¨Î µ—´ š´ÊŠœ¸Ê
°µ‹ÁœºÉ°Š¤µ‹µ„„µ¦Á„·—¡´ œ›³Å±Ã—¦Á‹œ‹³šÎ µÄ®o‡ªµ¤µ¤µ¦™Äœ„µ¦Ä®o°³˜°¤Å±Ã—¦Á‹œ °Šµ¦ž¦³„°
¢e œ°¨·„Áž¨¸É¥œÂž¨ŠÅž (Valgimigli et al., 1995) ¢¨µÃªœ°¥—rÁž}œµ¦ž¦³„°Äœ„¨»n¤¢e œ°¨·„ Ž¹ÉŠ¤¸ ¤´˜·Äœ„µ¦
˜oµœ°°„Ž·Á—´œš¸É—¸ ÁœºÉ °Š‹µ„ǦŠ¦oµŠšµŠÁ‡¤¸ °Š¢¨µÃªœ°¥—r µ¤µ¦™Ä®o°·Á¨È„˜¦°œ ®¦º°Å±Ã—¦Á‹œÂ„n °œ»¤¼¨
°· ¦³šÎµÄ®oÁ„· —Áž}œ°œ» ¤¼¨°· ¦³š¸É ¤¸‡ªµ¤‡Š˜´ ª¤µ„ ¹Êœ ‹¹ Šnª¥¥´¥´ÊŠ®¦º°³¨°ž’·„·¦·¥µ°°„Ž·Á—´œÅ—o (Cook and
Samman, 1996) —´Šœ´Ê œ„·‹„¦¦¤„µ¦˜o µœ°°„Ž·Á—´ œ °Šµ¦„´—‹µ„Áž¨º°„ o µª‹¹ ŠÁ„¸É¥ª o°Š„´ µ¦ž¦³„°
¢¨µÃªœ°¥—r š´ÊŠ®¤—¨³µ¦ž¦³„°¢eœ°¨·„š´ÊŠ®¤— Sultana ¨³‡–³ (2008) ¦µ¥Šµœªnµµ¦„´—‹µ„Áž¨º°„ oµª
µ¥¡´ œ›»r Oryza sativa var. super kernel š¸É „´——oª¥ 80% Á¤šµœ°¨ ¨³Äo °´˜¦µnªœ„µ¦„´—Ášnµ„´ 1:10 š¸É‡ªµ¤
Á o¤ oœ 0.025 „¦´¤/¨·˜¦ ¤¸‡nµ DPPH· remaining Ášnµ„´ 52.60% œ°„‹µ„œ¸ÊĜ„µ¦š—°—oª¥ª·›¸ reducing power Ž¹ÉŠ
ª·›¸ œ¸Ê ‹³Áž}œ„µ¦š—°‡ªµ¤µ¤µ¦™Äœ„µ¦Áž}œ˜´ ª¦¸—·ªr°Šµ¦˜oµœž’·„·¦·¥µ°°„Ž· Á—´œ ¡ªn µµ¦„´—‹µ„
Áž¨º °„ oµªš¸É „´——oª¥ 70% Á°šµœ°¨¤¸‡nµ reducing power ¼Š„ªnµ„µ¦„´ ——oª¥ 50% Á°šµœ°¨ Áž¨º°„ oµª¡´œ›»rÁ‹oµ