²é¿´: 1276  |  »Ø¸´: 2
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

ahuoo86

Ìú³æ (ÕýʽдÊÖ)


[½»Á÷] ÕªÒª·­Òë

É£¿ÆÖÐÒ©ÀàÀÒ°±ËáøÒÖÖÆ¼ÁÑо¿

ÖÐÒ©ÀÒ°±ËáøÒÖÖÆ¼ÁµÄÑо¿ºÍ¿ª·¢Êǵ±½ñÑо¿Èȵ㡣ÀÒ°±ËáøÓëÈ˵ÄË¥ÀÏ¡¢ÉË¿ÚÓúºÏ¡¢À¥³æµÄ·¢Óý¼°¹ûÊߵĺֱäÓÐÃÜÇйØÏµ¡£¹Ê¶ÔÓÚÀÒ°±ËáøµÄÑо¿¾ßÓй㷺µÄÀíÂÛÒâÒåºÍʵ¼ÊÓ¦ÓüÛÖµ¡£ÈçÃÀ°×»¯×±Æ·µÄÑо¿·½Ã棬ÀÒ°±ËáøÊÇÆ¤·ôÖкÚÉ«ËØºÏ³ÉµÄÆðʼø£¬Èç¹ûÊß±£ÏʼÁµÄÑо¿·½Ã棬ÀÒ°±Ëáø»áÓ°Ïì¹ûʵµÄºÖ±ä¹ý³Ì£¬Ñ¡È¡ÖÐÒ©ÌìÈ»³É·Ö×÷ΪÀÒ°±ËáøÒÖÖÆ¼ÁÂú×ãÈËÃǶÔÓÚ¡°ÂÌÉ«»¯×±Æ·¡¢»Ø¹é´ó×ÔÈ»¡±²úÆ·µÄÒªÇó¡£
±¾¿ÎÌâÑ¡ÔñÉ£¿ÆÖÐÒ©É£°×Ƥ¡¢É£Ò¶¡¢É£Ö¦¡¢É£ÝØ×÷ΪÑо¿Ìåϵ£¬¿¼²ìÆäÒÖÖÆÀÒ°±Ëáø×÷Ó㬽ø¶øÎªÀÒ°±ËáøÒÖÖÆ¼ÁµÄ¿ª·¢ºÍÓ¦ÓÃÌṩÒÀ¾Ý¡£
Ñо¿ÖУ¬·Ö±ðÒÔL-ÀÒ°±ËáºÍL-¶à°Í×÷Ϊµ×ÎÊ×ÏÈ¿¼²ìÁËËÄζɣ¿ÆÖÐÒ©ÒÖÖÆÀÒ°±Ëáøµ¥·ÓÑõ»¯Ã¸ºÍ¶þ·ÓÑõ»¯Ã¸µÄÄÜÁ¦¡£ÊµÑé½á¹ûÏÔʾ£¬É£¿ÆÖÐÒ©¶ÔÓÚµ¥·ÓÑõ»¯Ã¸µÄÒÖÖÆ±È½ÏΪ£ºÉ£Ö¦©ƒÉ£°×Ƥ©ƒÉ£Ò¶©ƒÉ£ÝØ¡£²»ÂÛÔÚµÍŨ¶È»¹ÊÇÔÚ¸ßŨ¶ÈÏÂÉ£¿ÆÖÐÒ©ÒÖÖÆ¶þ·ÓÑõ»¯Ã¸µÄ±È½ÏΪ£ºÉ£°×Ƥ©ƒÉ£Ò¶©ƒÉ£Ö¦©ƒÉ£ÝØ£»É£°×ƤˮÌáÈ¡ÎïµÄIC50ֵΪ1.13 mg/mL£¬É£Ò¶Ë®ÌáÈ¡ÎïµÄIC50ֵΪ2.14 mg/mL£¬É£Ö¦Ë®ÌáÈ¡ÎïµÄIC50ֵΪ6.64 mg/mL£¬É£é©Ë®ÌáÈ¡ÎïµÄIC50ֵΪ12.73 mg/mL¡£É£¿ÆÖÐÒ©Çå³ý³¬ÑõÒõÀë×Ó×ÔÓÉ»ùÄÜÁ¦±È½ÏΪ£ºÉ£Ò¶©ƒÉ£°×Ƥ©ƒÉ£ÝØ©ƒÉ£Ö¦£¬ÆäIC50Öµ·Ö±ðΪ£º5.18 mg/mL¡¢5.91 mg/mL¡¢6.58 mg/mLºÍ11.01 mg/mL¡£×ÛºÏÆÀ¼ÛµÃ³öÉ£°×ƤΪɣ¿ÆÖÐÒ©×îÓÅÀÒ°±ËáøÒÖÖÆ¼Á¡£×îºó£¬Óó¬ÑõÒõÀë×Ó×ÔÓÉ»ù¡¢DPPH×ÔÓÉ»ùºÍABTS×ÔÓÉ»ùÆÀ¼ÛÁËËÄζɣ¿ÆÖÐÒ©ÃÀ°×ÄÜÁ¦¡£¿¹Ñõ»¯ÒòËØ¿¼²ì¹ý³ÌÖз¢ÏÖÉ£Ò¶µÄ¿¹Ñõ»¯×÷ÓñȽÏÎȶ¨ÇÒ¸ßЧ£¬É£°×Ƥ´ÎÖ®£»É£Ö¦µÄ¿¹Ñõ»¯×÷ÓÃ×î²î£»É£é©µÄ¿¹Ñõ»¯Ð§¹û¾ßÓÐÑ¡ÔñÐÔ£¬¶ÔÇå³ýDPPH×ÔÓÉ»ùÓÈΪͻ³ö¡£Í¨¹ýLineweaver-BurkË«µ¹Êý×÷ͼ·¨È·¶¨ÁËÉ£°×ƤˮÌáÎïÒÖÖÆÀÒ°±ËáøµÄ»úÖÆÀàÐÍΪ»ìºÏÐÍÒÖÖÆ¼Á£¬ÆäÒÖÖÆ³£Êý£¨KI£¬KIS£©·Ö±ðΪ4.34 mg/mLºÍ23.26 mg/mL¡£Æä´Î£¬É£°×Ƥ¶Ô²ÝÝ®±£ÏÊ×÷ÓÃÑо¿½á¹ûÏÔʾ£¬±£ÏÊÒºÄÜÓÐЧµØ½µµÍ²ÝÝ®µÄÀùûÂÊ¡¢Ê§ÖØÂʲ¢¼õ»º²ÝÝ®ÖÐάÉúËØCºÍ×ÜÌǺ¬Á¿µÄÁ÷ʧ£¬µ«ÊÜζÈÓ°Ïì½ÏΪÑÏÖØ£¬¶ÔÓÚ²ÝÝ®ÖÐPPO¡¢PODøµÄÓ°ÏìҲΪ¸´ÔÓ¡£×ÛÉÏÑо¿·¢ÏÖ£¬É£°×ƤΪɣ¿ÆÖÐÁ¼ºÃµÄÀÒ°±ËáøÒÖÖÆ¼Á£¬ÔÚ¹ûÊß±£ÏÊºÍÆ¤·ôÃÀ°×µÈ·½ÃæÓйãÀ«µÄÓ¦ÓüÛÖµ¡£
¹Ø¼ü´Ê£ºÉ£¿ÆÖÐÒ©¡¢ÀÒ°±Ëáø¡¢¿¹Ñõ»¯¡¢ÒÖÖÆ»úÖÆ¡¢¹ûÊß±£ÏʼÁ

·­ÒëÆ÷·­ÒëµÄÎðÈÅ£¬Ð»Ð»£¡

» ²ÂÄãϲ»¶

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ahuoo86

Ìú³æ (ÕýʽдÊÖ)


ÒýÓûØÌû:
Originally posted by ahuoo86 at 2010-12-22 12:53:29:
É£¿ÆÖÐÒ©ÀàÀÒ°±ËáøÒÖÖÆ¼ÁÑо¿

ÖÐÒ©ÀÒ°±ËáøÒÖÖÆ¼ÁµÄÑо¿ºÍ¿ª·¢Êǵ±½ñÑо¿Èȵ㡣ÀÒ°±ËáøÓëÈ˵ÄË¥ÀÏ¡¢ÉË¿ÚÓúºÏ¡¢À¥³æµÄ·¢Óý¼°¹ûÊߵĺֱäÓÐÃÜÇйØÏµ¡£¹Ê¶ÔÓÚÀÒ°±ËáøµÄÑо¿¾ßÓй㷺µÄÀíÂÛÒâÒåºÍʵ¼ÊÓ¦ÓüÛÖµ¡£Èç ...

»¹Ã»ÓÐÈËÀíÎÒ£¬ËãÁË£¬×Ô¼ºÅª°É
2Â¥2010-12-22 19:09:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

flower666666

Í­³æ (ÕýʽдÊÖ)


ahuoo86(½ð±Ò+10, ·­ÒëEPI+1):²»¹ÜÔõô˵£¬ÐÁ¿àÁË£¡£¡Ð»¹ý£¡£¡£¡ 2010-12-28 18:55:00
Sankoh tyrosinase inhibitor class of Chinese medicine

Tyrosinase inhibitor medicine research and development in today's hot topic. Tyrosinase and human aging, wound healing, insect closely related to development and the browning of fruits and vegetables. So for the study of tyrosinase extensive theoretical and practical value. Such as whitening cosmetics research, tyrosinase is the synthesis of melanin in the skin starting enzyme, if the vegetable preservative research, the tyrosinase activity will affect the browning of fruit, selected natural ingredients of Chinese medicine as a tyrosinase inhibitor meet people for "green cosmetics, return to nature" product requirements.
The topics chosen for Sankoh Chinese Morus alba, mulberry, mulberry, mulberry as a research system to study its role in inhibition of tyrosinase, tyrosinase inhibitors and thus to the development and application of basis.
Study, respectively, L-tyrosine and L-DOPA as a substrate, the first taste of Sankoh investigated four Chinese inhibit tyrosinase and two single-phenol oxidase and polyphenol oxidase capacity. The results showed that Sankoh medicine for a single phenol oxidase inhibition compared to: Mulberry> Morus alba> Mulberry> Mulberry. Both in low concentrations or at high concentration inhibited the Second Chinese Sankoh Comparison between phenol oxidase: Morus alba> Mulberry> Mulberry> Mulberry; Morus alba L. aqueous extract of the IC50 value of 1.13 mg / mL, mulberry IC50 value of water extract of 2.14 mg / mL, IC50 mulberry water extract is 6.64 mg / mL, the water extract of mulberry IC50 value of 12.73 mg / mL. Sankoh, the superoxide anion radical scavenging ability of Chinese medicine compared to: Mulberry> Morus alba> Mulberry> Mulberry, IC50 values were: 5.18 mg / mL, 5.91 mg / mL, 6.58 mg / mL and 11.01 mg / mL . Moraceae Morus alba L. Evaluation of Chinese medicine reached the optimal tyrosinase inhibitors. Finally, superoxide anion radical, DPPH radical and ABTS radical evaluation of the four taste Sankoh Chinese white capacity. The investigation on the process of oxidation that the antioxidant effect of mulberry leaves more stable and efficient, Morus alba second; Mulberry worst antioxidant; mulberry selective antioxidant effect on DPPH free removal Kew outstanding. By Lineweaver-Burk double reciprocal plots to determine the water extract of Cortex Mori mechanism of tyrosinase inhibition of mixed type inhibitor, the inhibition constant (KI, KIS) were 4.34 mg / mL and 23.26 mg / mL . Second, the preservative effects of Cortex Mori on strawberry showed preservation solution can effectively reduce the rate of strawberries rot, weight loss and slow down the strawberry and total sugar content of vitamin C loss, but more serious affected by temperature, for the strawberry PPO, POD enzymes but also for complex. To sum up study found Moraceae Morus alba in good tyrosinase inhibitor, in the fruit and vegetable preservation and skin whitening have broad application.
Key words: Sankoh medicine, tyrosinase, anti-oxidation, inhibition mechanism, fruit and vegetable preservative
3Â¥2010-12-27 22:17:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ahuoo86 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çó²ÄÁÏ£¬»·¾³×¨Òµµ÷¼Á +3 18567500178 2026-03-18 3/150 2026-03-23 23:50 by ÈÈÇéɳĮ
[¿¼ÑÐ] 0854 ¿¼Ñе÷¼Á ÕÐÉúÁË£¡AI ·½Ïò +4 pk3725069 2026-03-19 16/800 2026-03-23 23:09 by Íô£¡£¿£¡
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϺ½²ÄÁÏר317·ÖÇóµ÷¼Á +3 ըѽըѽըÊíÌõ 2026-03-23 3/150 2026-03-23 20:47 by pswait
[¿¼ÑÐ] 316Çóµ÷¼Á +7 ÁºÜçö© 2026-03-19 7/350 2026-03-23 16:21 by lingjue
[¿¼ÑÐ] 08¹¤Ñ§µ÷¼Á +7 Óû§573181 2026-03-20 11/550 2026-03-23 15:47 by ÎÒ°®Ñ§Ï°Ñ§Ï°Ê¹Î
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖÐũҵ071010£¬×Ü·Ö320Çóµ÷¼Á +5 À§À§À§À§À¤À¤ 2026-03-20 6/300 2026-03-22 17:41 by hxsm
[¿¼ÑÐ] 305·ÖÇóµ÷¼Á£¨Ê³Æ·¹¤³Ì£© +4 Sxy112 2026-03-21 6/300 2026-03-22 15:26 by ÎÞи¿É»÷111
[¿¼ÑÐ] Çóµ÷¼Á +7 Auroracx 2026-03-22 7/350 2026-03-22 12:38 by ËØÑÕÇã³Ç1988
[¿¼ÑÐ] 285Çóµ÷¼Á +6 ytter 2026-03-22 6/300 2026-03-22 12:09 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] ³õÊÔ 317 +7 °ëÀ­Ô±û 2026-03-20 7/350 2026-03-21 22:26 by peike
[¿¼ÑÐ] Ò»Ö¾Ô¸¶«»ª´óѧ¿ØÖÆÑ§Ë¶320Çóµ÷¼Á +3 Grand777 2026-03-21 3/150 2026-03-21 19:23 by ¼òÖ®-
[¿¼ÑÐ] 311Çóµ÷¼Á +3 Ó¸ҵÄСÎâ 2026-03-20 3/150 2026-03-21 17:40 by ColorlessPI
[¿¼ÑÐ] 266Çóµ÷¼Á +3 ÍÛºôºßºôºß 2026-03-20 3/150 2026-03-21 16:46 by barlinike
[¿¼ÑÐ] Ò»Ö¾Ô¸Ìì½ò´óѧ»¯Ñ§¹¤ÒÕרҵ£¨081702£©315·ÖÇóµ÷¼Á +12 yangfz 2026-03-17 12/600 2026-03-21 03:30 by JourneyLucky
[¿¼ÑÐ] 332Çóµ÷¼Á +4 ydfyh 2026-03-17 4/200 2026-03-21 02:20 by JourneyLucky
[¿¼ÑÐ] Çóµ÷¼Á +3 Ma_xt 2026-03-17 3/150 2026-03-21 02:05 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸ÎäÀí²ÄÁÏ305·ÖÇóµ÷¼Á +6 ÏëÉϰ¶µÄÀðÓã 2026-03-18 7/350 2026-03-21 01:03 by JourneyLucky
[¿¼ÑÐ] 296Çóµ÷¼Á +6 www_q 2026-03-18 10/500 2026-03-20 23:56 by JourneyLucky
[¿¼ÑÐ] 329Çóµ÷¼Á +9 ÏëÉÏѧ߹߹ 2026-03-19 9/450 2026-03-20 22:01 by luoyongfeng
[¿¼ÑÐ] Ò»Ö¾Ô¸¼ªÁÖ´óѧ²ÄÁÏѧ˶321Çóµ÷¼Á +11 Ymlll 2026-03-18 15/750 2026-03-20 19:40 by ¶¡¶¡*
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û