CNCB THT & THY SN

Nguyn Th Thu H Khoa Cng ngh Thc phm Trng H K thut Cng ngh

Chng 3

CNCB CC SN PHM THT & THY SNOctober 11 Nguyn Th Thu H - HUTECH 2

3.1 Ch bin nh tng tht

October 11

Nguyn Th Thu H - HUTECH

3

1. H nh tng Phn loi Du/nc Nc/du

Kch thc: 0.1m

October 11

Nguyn Th Thu H - HUTECH

4

S n nh h nh tng

October 11

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5

Cht nh ha

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6

2. Nh tng tht H rn/lng Kch thc 1.0 m

Bt nho

October 11

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October 11

Nguyn Th Thu H - HUTECH

8

HLB = 14October 11 Nguyn Th Thu H - HUTECH 9

October 11

Nguyn Th Thu H - HUTECH

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2. Nh tng thtPha lin tc Nc Mui, phosphat, ng, hng liu Protein t c ha tan

Pha gin on

Huyn ph -Protein t do ca mng tng c; -Nhng on si tht -M lin kt -Tinh bt, gia v -T bo cht bo Nh tng - Cht bo t do - Ht m - protein Bt khNguyn Th Thu H - HUTECH 11

October 11

3. Ch bin nh tng tht 2 dng sn phm Mn Th

2 giai on Giai

on 1: ct nh v ha tan protein Giai on 2: nh ha

October 11

Nguyn Th Thu H - HUTECH

12

3. Ch bin nh tng tht 3 phng php xay/trn Xay

nc trc Xay m trc xx Bavarian Xay cng lc S dng du thay m

October 11

Nguyn Th Thu H - HUTECH

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3. Ch bin nh tng thtThit b Phng php gin on: cutter

Phng php lin tc ThitOctober 11

b trn + b phn nh haNguyn Th Thu H - HUTECH 14

Nguyn liu chnh

Ph gia

Th t ct & nhit ct

Thnh phn khc

Quan st

1

Nh tng da

Tht nc Cht mu Mui gia v polyphosphate

2 3 4 56

Nghin th nu tc ct chm hoc tht nhiu gn Ha tan trc Dng kh Cho vo khi tht hydrate ha mt phnLng trng trng, Thng dng ng lnh plasma, lactalbumin Cht to nh dng Cho vo trc hay cng bt, dung dch lc vi cc yu t lm t protein Nh tng cht bo

Nc/

7 8

M

9 10 Cht chng oxy ha ng Tinh btOctober 11

11 12

Acid ascorbic hay ascorbate Na (vi gluconodelta-lacton)

Nguyn Th Thu H - HUTECHKt thc 12 14o C

15

4. Cc yu t nh hng n n nh h nh tng tht

Stokes Law:

V = D2(de-di) k vis

D = ng knh cu bo de = t trng pha lin tc di = t trng pha phn tn k = khng i vis = nhtOctober 11 Nguyn Th Thu H - HUTECH 16

4. Cc yu t nh hng n n nh h nh tng tht Thc t:V = D2 vis

Kch thc ht cu bo nht

October 11

Nguyn Th Thu H - HUTECH

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4. Cc yu t nh hng n n nh h nh tng tht Cht lng tht

Hm lng v chc nng ca protein c Kh

nng gi nc Kh nng lin kt vi bo PSE

October 11

Nguyn Th Thu H - HUTECH

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4. Cc yu t nh hng n n nh h nh tng tht K thut sn xut

lng mui: ti u 4 5% frankfurter

Hm

October 11

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4. Cc yu t nh hng n n nh h nh tng tht K thut sn xut iu

khin nhit : nc lnh/

Kh nng ha tan v trng n ca protein Tng thi gian xay/trn Tng nht Tht nc + mui + nc: 0 4o C M heo: ~ 13o C M b: ~ 18o C M gia cm: ~ 7o C S dng Nit Th Thu H - HUTECH October 11 Nguyn

20

October 11

Nguyn Th Thu H - HUTECH

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4. Cc yu t nh hng n n nh h nh tng tht K thut sn xut Xay

trn

Ha tan & lm trng n (1-5%) protein c Ph v t bo m v phn tn cc ht cu bo vo dung dch Mc xay Tc xay, bn ca li dao, khong cch gia dao vo cho

October 11

Nguyn Th Thu H - HUTECH

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October 11

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4. Cc yu t nh hng n n nh h nh tng tht K thut sn xut pH

Mi quan h pH WHC Trng thi trc co cng sau co cng

Phosphate

p mui

Chn

khng

Tng kh nng nh ha v n inh h nh tng Mu scOctober 11 Nguyn Th Thu H - HUTECH 24

4. Cc yu t nh hng n n nh h nh tng tht Hm lng cc ph gia Cht

nh ha Cht h tr lin kt Cht lm c

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4. Cc yu t nh hng n n nh h nh tng tht Nhi X l nhit

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Cc vn quan trng Chn nguyn liu tht (pH 5.7) & m C th s dng tht & m ng lnh

Xay th tht & m Cc ph gia h tr to nh nh mui, phosphate &

protein cho vo u qu trnh Cc ph gia kt dnh, lm c cho vo giai on sau iu khin nhit v thi gian xay C th s dng N2, nn thc hin di iu kin chn khngOctober 11 Nguyn Th Thu H - HUTECH 27

May xay tho (Mincer)

May xay tho

Truc vt cua may xay tho

October 11

Nguyn Th Thu H - HUTECH

28

My xay nhuyn (Cutter)

October 11

Nguyn Th Thu H - HUTECH

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3.2. p mui 1. Mc ch- Bo qun - Ch bin

October 11

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Tc dng bo qun ca mui Vi sinh vt mt nc, rch mng t bo VSV Cl- kt hp vi protein lin kt peptid

VSV s dng c protid Oxy ha tan t VSV hiu kh b nh hng Km hm qu trnh t phn gii

October 11

Nguyn Th Thu H - HUTECH

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2. C ch Khuch tn:

Trong 1 phm vi nht nh, cc phn t cht tan di ng t ni c nng cao sang ni c ng thp. nh lut Fick: dQ = - DS dc/dxdtQ:lng cht KT; S:din tch KT; t: thi gian KT; dc/dx: gradien nng ; D: h s KT, D ph thuc mi trng v bn cht cht KTOctober 11 Nguyn Th Thu H - HUTECH 32

2. C ch Thm thu

Qu trnh di chuyn t ng ca dung mi phi khc phc tr lc ca mng bn thm i t dung dch c nng thp dn ni c nng cao.nh lut Van-Hp: Po = i RTC Po: p sut th thu ca dg dch; C: nng cht tan; T: nhit tuyt i; R: hng s kh l tng, i l hng s ng trng, vi NaCl i = 2; CaCl2 i = 3 October 11 Nguyn Th Thu H - HUTECH 33

October 11

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3. Phng phpA. p mui thy sn p mui nhit thng p

mui kh p mui t p mui hn hp p mui nhit thp

October 11

Nguyn Th Thu H - HUTECH

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p mui kh u Nhc

Kch thc nh

Hm lng m thp (< 5%)

October 11

Nguyn Th Thu H - HUTECH

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p mui t u Nhc

p mui hn hpOctober 11 Nguyn Th Thu H - HUTECH 37

p mui nhit thp p lnh (5-10oC) p ng (