????? ??????????, ?????? ????? ?????????? ????? ???? ??????, ???? ???? ????????????? ????? ???? ?????? ??? ??????? ????????? ????? ?????? ?????? ????? ????????? ????? ??? ?????? ???????, ?????? ?????????? ???????? ????, ?????? ??????? ?????? ?????, ?????? ????? ????? ??? ???????? ???? ???????, ??????, ??? ??? ?????????? ????? ???? ??????? ????????? ?????? ??? ??????? ????? ??????? ???????? ???? ????? (??????? ?????????, ?????, ????, ???????) ??? ????? ????? (??????? ????????? ?????, ???? ?????) ?? ?????? ??????, ???? ????? ????? ????? ?????? ?? ?????????????? ???, ???? ????? ???????????? ?????????? 6 ?????? ?????? ???????????:

?) ????? ????? ????? (????????): ????????, ????? ????????, ??????????? ???????????, ??????????? ???????????, ?-?????????-?-?????? ???????????, ???? (?-???????-?-??????) ??????????, ??????? ??????????????????? (MCP), ???????;

?) ????? ??????: ??????? ?????????? (MSG), ??????? ???????? (IMP), ??????? ?????????? (GMP), ??????? ???????? + ??????? ?????????? (I+ G), ??????????? ??????? (MSS), ????????? ??????? (DSS), ???????;

?) ????????? ???????????? ??? ??? ???? ??????? ?????: ??????? ??? ???, ??? ????? ??? ???? ???? ???????????? ???, ?????? ?????? ??????? ?????;

?) ??????? ????????????? ?????? ??????? ????: ??????? ????????? ?????? ?????? ??? ??? ?? ??????? ??????????? ??????? ????????????? ?????? ??????? ?????????;

?) ???????? ????????? ????? ??? ????: ??????? ?????? ??????? ???? ??????? ?????? ??? ??????? ????? ???????, ??? ?????? ??????? ???? ??????? ?????? ??? ?????? ????? ????????

???? ????? ??????????? ?????????? ????????? ???:

?) ?????? ???, ?????? ?????? ?????? ??????????????;

2) ?????? ??????? ???? ?????? ?????? ????????, ?????? ??? ???? ?????? ??????? ??? ??? ????? ?????????? ???????? ?????, ?????? ??? ???? ??????? ????????? ?????????? ????????, ???????, ???? ????? ??????? ?????????? ????????? ?????, ????? ?????????? ?????????????? ????? ??? ????? ?????, ??? ?????? ?????? ????????? ????????? ?????;

?) ???????? ???????? ??????? ?????? ????? ?????? ?????? ???????? ?????? ?????? ??? ?????? ??? ?????? ????? ??????, ???? ?????? ?????? ????? ???;

?) ???? ????????? ?????? ???? ?????? ?????? ???????, ??? ?? ?? ?????? ?????? ???? ??????, ???? ???????? ???????, ???, ?????? ??? ????? ?????? ??? ????? ??? ??????;

?) ???? ????? ??????????? ????? ????? ??? ???, ??? ???????????? ??????????? ???? ?????? ???? ??????????? ??? ?????????, MCP, ??????? ???????? ?????? ?????? ??????? ?????????;

?) ????????? ??????? ?????? ?????? ???? ?????? ???????? ???? ????????? ?????? ???? ???????? ??????? ??? ?????? ???????? ???????? ???????? ???? ?????, ??????? ????????, ?????? ????????, ???????, ???????? ???? ???? ???? ???????? ??????? ??? ????????? ???? ?????? ????, ??????? ??????????? ???????????, MCP, ???????;

?) ?????? ????????????? ?????? ?????? ?????? ????, ??????? ??????? ????? ??????? ????

??????? ???? ????? ??????????? ?????

A, ?????????? ????? ?????? ??????

(?) ??????? ??? ?????? ??????? ??? ??????? ?????????? ????????? ??????, ???? ???? ?????? GC/MS ?????????? ??????? ?? ???? ?????? ?? ??????? ??? ????? ?????? ?????? ??????? ???? ???????, ???? 1% ?? 20% ????????? ???? (????? ??????? ????? ???????? ???????? ?????, ???????? ??? ???)? ??????? (???????, ???????), ???????? ??????? ???, ????????, ????????, ???????? ??? 2-???????????????????? ?????, ???????????? ?????? ???? ??? ?? ????? ?????? ???, ????? ???????? ?????? ???? ???????, ??????, 93 ℃ ?? ????????, ????????? ???????????? ?????-??????? ?????, ????? ???, ???????? ???????? ???? ??????? (??????2?????), ???? ???????? ????? 2-?????? ????????????? ????? ????? ???????, ???? ??????????? ???????? ??? ?? ?????? ???, ?? ???? ??????? ?? ???? ????? ??? ?? ???? ?? ?????? ????? ??? ?????? ????????, ?????? ??? ?????????? ???????? (PG) ??????? ????? ????? ?????????? 4 ?? ?????? ????? ????? ???? ????: 1) ????? ?????? ????????????? ???, ??? ???? ????? ???? ??????? ??? ???, ???? ???? ????? ??????? ????? ???????; 2) ??????? ???????????, ?????? ?????? ?????? ??, ?????? ??????? ???????????, ?????? ????????????? ??????? ??????????? ????? ?????? ????? ???; 3) ?????? ???????? ?????? ?????? ?????? ??????? ??????? ????? 3-8 ???, ??? ????? ??????? ????? ????? ?????? ????? ???????????; 4) ??? I + G, MSG, MCP ??? ???????? ????????? ?????? ???? ??????? ??????, ???? ??? ???????? ?????? ?????????

(?) MCPMCP, ?????? 3-???????-1, 2-???????????????????? ?????? 3-???????-2-???????????-2-?????????????????-1-???? ????? ???? ???????, ??? ?? ??? ?????? ?????? ????? ?????? ????? ???? ????? ??? ??? ??? ?????? ????, ?????? ???????? ?????? ???? ???????? ???? ???????? ???? ???? ??????? ?????? ???????? MCP ? ???????? ??? ?????? ???????? ???? ???? ????? ??? ???, ?????? ?????? ??????? ???? ????? ?????? ???? ????????? ??? ???????????, MCP ???? ????? ????? ??? ?? ????? ???? ????? ??????? ????? ???? ???? ?????? ?????? ???? ??????????? ?????

(3) ??????????? ???????????, ?????? ??? ???????????, 2-???????? ?????????????????? ???? ???????? ???? ???????????, ???? ?? ??????? ????????? ????? ???? ???, ??? ???????? ??? ??? ??????, ??? ??? ??? ????? ???? ??????? ???? ??? ??????? ?????? ???????? 1% ??????????? ??????????? ???????? ????, ????? ???? (??? ???? ?????? ???) ??? ?? ???? ????? ???, ??? ????? ??? ????? ??? ?????? ???? ???? ?????? GC/MS ?????????? ??????????? ??????????? ? ???????? ?????? ??????????, ??? ???? ???? ???? ??????????? ??????????? ? ???????? ??????? ??????? ??? ?????? ?????? ?????? ???? ??????? ???????? ?????? ?????????, ??????????? ??????????? 1% ????? ????????? ?????????? ??? ??'??? ???? ???????? ???? ??????? ???????????

(?) ?????????; ?????????) ???????? ??? ?, ?-?????????-?-???????????-? (????) -?????????, ?? ????? ?????, ????? ??????????, ??????????? ???? ???? ??????????, ??? ???? ??? ??? ?????? ????? ????????, ???? ????? ?????????? ???? ???????? ??????????? ?? ????????? ???, ????????? ??? ?????? ???, ?????? ????? ???? ?????? ????? ???? ???????? ????????, ?????? ?????? ????, ???? ??????, ???????? ???? ??????? ??? ???? ???????, ??? ?????? ??????? ????? ??? ??????? ?????? ??????? ???? ?????????? ????? ??? ?????? ?????? ??? ?????? ?????? ????? ??????? ?.? ?? ? ??? ????? ??????? ??? ?? ?? ?? ??? ??????? ???? ????? ???? ???? ?????? GC/MS ??????????, ?????????? ???????? ?????? ???????, ??? ???? ?????? ????? ??????? ?% ????????? ???????? ??????????, ?????????? ???? ???? ?????? ?? ????? ???????????? ?????, ???? ?????????, ????????, ???????? ??????? ??? ???????? ?????? ???? ??????????? ??? ???? ????? ?????? ??????? ???????? ??? ???? ??? ???????? ??????????? ??????? ??????? ????????? ????? ?????????? ?????? ???????, ?????? ???????? ?????????? ??????? ?????? ????? ?????? ????????? ??? ??????? ?????? ???????? ??? ????????? ??????? ?????? ????????? ?????? ???????? ?????????? ????? ????? ??? ??????? ?????? ?????? ???????????, ??? ?????? ?????? ??? ????? ?????? ?????? ??????, ???? ?????? ???? ????, ???? ??? ???? ??????? ??????????, (I + G) ??? MSG ??????? ???????????? ????? 1 ?? ???????????

(?) ?????? ?????? ??? ????????? ?????? ???? ???????? ????? ?????? ?????: 2-???????-3-?????? ???????????, ???? (2-???????-3-??????) ??????????, 2-???????-3-???????-???????????, 2-???????-3-??????????????????? ???????????, ???????? ??? ????????? ?????????????? ???? ??? ????? ????? ????? ???, ?????? ???? ????? ????, ???????? ???? ???? ??? ???????? ??????? ????????????

???, ????? ?????? ??????

(?) MSGMSG ????? MSG, ?????? L-glutamate ???????, ??????? ?????????? ????? ???? ???????? MSG ????? ???????, ?????, ???? ??? ????? ????? ????, ??? ????? ???? 0.014%? MSG ???? ?? ??? ??? ????? ?????? ??????? ???, ??? ????? ??? ????? ?????? ??????? ??????? ?? ???? ????? ???? ????? ?????????? ??????, ??? ?????? ?????? ????? ?????????? ????????? ???, ??? ????? ????? ??? ??? ????? ????????

MSG ? IMP, GMP ??? (I + G) ???? ????????? ?????? ???? (MSG + IMP) 0.05 g/L ????? ???????????, ???????? MSG∶IMP = 1∶1, ????? ???????? ????????? ??????????; MSG ??? IMP ? ????????, IMP ? ????? ??????? ??????? 50% ?? ?????? ???????, ??? ????? ? ??????? ?? ????? ?????????? ?????? ?????? ???????? IMP ? ????? ??????? 50% ?? 100% ?? ?????? ???????, ??? ????? ?????????? ?????? ????? ? ??????? ????? ????????

MSG ?? ??????? (I + G) ???? ??????? ??? ????????? MSG ??????? ??????, 99% MSG+ 1% (I + G) ?? 2 ??? ?????? ???????????, 98% MSG+ 2% (I + G) ?? 3.5 ??? ?????? ???????????; 96% MSG+ 4% (I + G) ?? 5 ??? ?????? ???????????? ???? ?????? ????????, MSG ?? ??????? (I + G) ???? ???????? ??????? ??????, ??? ??????????? ?????? ????? 1 ?? ???????????

(?) IMP, GMP ??? (I + G) IMP ??? GMP ??????, ?????? ???? ??? ??????? ?????? ??????? ??????, ?????? ???? ??? ???????, ??? ????????, ????, ??? ???????? ????? ??? ???????? ??? ??? ????????? ??????? ??? ???????? ????????? IMP ??? GMP? ?? ???? ????? ????? ???, ??? GMP? ????? ??????? IMP ??????? ????? 3 ??? ????, ??? ?????? ?????? ???????? ????????? ????? ??????? ??? (???, I + G, IMP ??? GMP ????????? 50% ???)? MSG, IMP, GMP, (I + G) ???? ??????? ???? ?????, ??????????, ???? ?????, ??????? ??? ???? ?????? ?????? ??? ????? ?????????

(?) MSS ??? DSSMSS, DSS ???? ????? ??? ????????? ??????? ????? ???, ???? ????? ????????? ????? ????????, ??????? (??????? ?????? ????, ??????, ??????, ????????, ???????, ???????, ???????) ????? ???? ???????? ????? ????? ??????, ????????? ????? ????? ?????????? ????? ??????? ???????????? ???? MSG ???? ????????? ?????? ????

?.????????? ?????????? ??? ?????? ???? ??????? ???

??????? ???? ??????? ?????????? ??? ????? ??? ???? ???? ????? ???? ??? ?????? ?????? ???, ???? 10 ?? ???? ??????? ????????? (??????? ??????????????, ????????, ????????????????, ?????????, 5-???????????????, ???????), ???? ?????? (??????, ????????, ???????) ??? 10 ?? ???? ??????? ???????? ?????? ?????? ???? ?????, ????? ??? ????? ???, ???? ?????? ?????? ??? ?????? ???? ?????? ???? ????? ?????????????, ???????, ?????????, ??????, ?????, ????????, ??????, ????????, ?????????, ???????, ?????????, ?????????, ??????????, ???????, ???????, ???????????? ??? ??????? ??? ???????? 17 ????? 208 ?????? ?????? ???????????? ?????-??? ????? ????? ?????????? ??? ????? ????? ?????? ??? ?? ?????? ?????? ???? ??? ??? ???? ??????? ??? ??? ???????? ?????????, ???? ?????? ??? ????? ????????? ????? ??????, ????? ??????? ??? ????? ????????? ???? ????, ???? ?????? ????? ??? ???????? ???? ?????? ?????? ???? ????????? ????? ?????? ??????? ??? ?????? ????? ?????, ????? ?????? ????? ???? ??? ??? ??????? ??????????, ???? ??????? ???????? ??????? ????? ??????? ????????? ??? ??? ??????? ????, ??? ??? ????? ???? ??????? ???????????? ???????? ????????? ??? ???? ?????? ?????? ????????? ???? ?????? ???????? ?????? ???, ???????? ????? ???????? ?????? ?????? ????????????

??????, ????? ?????????? ??????? ???? ??????? ???????????

??? ??????? ??????????? ???? ???????? ??????? ????????, ?????? ??????: 1) VB1 → bis (2-methyl-3-furanyl) ??????????; 2) α-????????????? ?????? + (NH4) 2S →H2S, ???????; 3) ????????? + (NH4) 2S →H2S, ???????; 4) ?????????? ??? ????????? ??????? ??????? + (NH4) 2S →H2S, ????????

???? ?????? ????? ????? ????? ??? ???? ?????, ????????? ??? ???????? ????? ????? ????, ???? ????? ?????????? ?????? ??????? ?????, ???????? ????? ?????????? ???? ??????? ?????? ??????????? ?????, ????????, MSG, (I + G), ?????????, ??????? ??? ?????? ??????? ??????? ???? ????? ???? ???????, MSS, ????????? ????? ????? ???? DSS, ??? ??? ??????, ??????, ????, ????? ??? ???????? ?????? ????? ???? ????????