san xuat banh mi.docx

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    BGIO DC V O TO

    I HC NNG LM THNH PHHCH MINH

    BO CO CNG NGHLN MEN

    NG DNG VI SINH VT TRONG

    SN XUT BNH M

    GVHD: ThS. VNG THVIT HOA

    THC HIN:

    Ngnh: Cng NghHa Hc

    Thnh phHCh Minh, thng 10/2013

    Nguyn Vn Giu 10139048

    Trn Cao Hiu 10139061

    Phm ThThu Hin 10139059

    Nguyn Vn Phc 10139179

    Trn Nguyn Thanh Tm 10139199

    L ThHng Thy 10139235

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    LI NI U

    Mc d shiu bit ca con ngi vnm men v nhng tnh cht ca n mi c

    hn 150 nm, nhng ngay tthi ci, ngi ta bit dng bt ni (c lgm qun th

    vi sinh vt to axit lactic v vi lai nm men). n u thk19, nm men bia, nm men

    thi tnh my ru bia c con ngi sdng lm bnh m. Cui thk19, nhiu

    ci tin kthut nh hthng thng kh (nc Anh), kthut ly tm tch nm men ra

    khi mi trng tng trng (M) c dng sn xut men bnh m. Lc by gi

    Pasteur cho rng nm men c thc nui trong dung dch ng ma vi amoniac, l

    ngun Nit duy nht mi c ng dng. Sau thchin thI v thII, vic sn xut nm

    menSacharomycesvCandidapht trin mnh. C nhiu bng sng chnh du nhng

    tin bvk thut nui trong giai an ny, chyu l an Mch v c. Sau , cng

    vi spht trin chung ca k thut ln men vic ci tin trang thit bv chng nm men

    c nh hng ln trong qu trnh sn xut nm men hin i.

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    MC LC

    LI NI U ...................................................................................................................... 21. NGUYN LIU LM BNH M ................................................................................... 7

    1.1 Bt m ......................................................................................................................... 71.1.1 Cc thnh phn chnh ca bt m ........................................................................ 71.1.2 Vic phn hng v nh gi cht lng bt m ................................................. 11

    1.2. Nm men lm bnh m ............................................................................................ 121.3 Phgia ...................................................................................................................... 13

    1.3.1 Nhim vca cht phgia ................................................................................ 131.3.2 Tnh nng ca phgia trong cng nghlm bnh m Vit Nam ...................... 14

    2. GII THIU V VI SINH VT TRONG SN XUT BNH M

    (SACCHAROMYCES) ........................................................................................................ 142.1 Tn gi: ..................................................................................................................... 142.2 Phn loi: .................................................................................................................. 142.3 c im hnh thi, kch thc ................................................................................ 152.4 Thnh phn cu to ................................................................................................... 162.5 Thnh phn ha hc .................................................................................................. 172.6 Sinh trng v sinh sn ............................................................................................ 18

    2.6.1 Sinh trng ........................................................................................................ 182.6.2 Sinh sn ............................................................................................................. 18

    2.7 Dinh dng v con ng chuyn i vt cht trong tbo nm men ....................... 222.8 c im nm men dng trong sn xut .................................................................. 24

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    3. SN XUT NM MEN ................................................................................................ 253.1. Nguyn liu sn xut nm men ............................................................................... 25

    3.1.1 Rng ............................................................................................................ 25

    3.1.2 Ha cht ............................................................................................................. 273.2 Quy trnh sn xut nm men: men p rng v men kh ........................................ 28

    3.2.1 Sn xut men p trng ............................................................................. 283.2.2 Phng php nui nm men bnh m ................................................................ 303.2.3 Qu trnh men lng ............................................................................................ 323.2.4 Thu tbo nm men, to hnh, ng gi........................................................... 333.2.5 Hiu sut v chi ph ........................................................................................... 343.2.6 Mt sphng php ci tin qu trnh v cht lng thnh phm men p .... 343.2.7 Yu cu cht lng thnh phm men p ........................................................... 353.2.8 Kim tra thng strong qu trnh sn xut ....................................................... 353.2.9 Sdng cht thi ca qu trnh sn xut ........................................................... 37

    3.3 Sn xut men kh ..................................................................................................... 383.3.1 Gii thiu tnh hnh sn xut men kh nc ngoi ........................................ 383.3.2 c im men chu c qu trnh lm kh ..................................................... 393.3.3 Yu cu cht lng men kh ............................................................................. 403.3.4 Sn xut men kh .............................................................................................. 40

    3.4 nh hng ca cc yu tmi trng n tc sinh tng hp sinh khi nm men........................................................................................................................................ 41

    3.4.1 Nhit ............................................................................................................. 413.4.2 pH ca mi trng ....................................................................................... 423.4.3 nh hng ca cht ha hc ............................................................................. 42

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    3.4.4 nh hng nng rng ............................................................................ 433.4.5 nh hng ca cng khng kh v khuy trn ln tc tng trng ca

    nm men ...................................................................................................................... 433.5 Trang thit bcn thit cho mt c ssn xut men bnh m .................................... 44

    3.5.1 Bphn sn xut men........................................................................................ 443.5.2 Trang bphng k thut ..................................................................................... 453.5.3 Vsinh ............................................................................................................... 45

    3.6 Phn loi nm men dng trong sn xut .................................................................. 453.6.1 Phn loi theo dng ........................................................................................... 453.6.2 Phn loi theo v................................................................................................ 46

    3.7 Cc phng php bo qun men ging ................................................................... 464. QUY TRNH SN XUT BNH M: .......................................................................... 485. QUY TRNH SN XUT NC TA: ..................................................................... 50

    5.1 Vai tr ca nm men trong uy trnh sn xut ......................................................... 515.2 H hng bnh do vi sinh vt ..................................................................................... 525.3 nh hng ca vi sinh vt n phm cht ca bt bo qun ................................... 535.4 Hvi sinh vt bnh m .............................................................................................. 545.5 H hng do vi sinh vt ............................................................................................. 55

    6. MT SNG DNG KHC CA NM MEN (Saccharomyces cerevisiae) ............... 56

    6.1 Ln men ru ........................................................................................................... 566.2 Sn xut bia .............................................................................................................. 576.3 Sn xut ru vang v sanpanh ................................................................................ 586.4 Chvacxin H5N1 cho gia cm ................................................................................. 58

    KT LUN ........................................................................................................................ 60

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    Ti liu tham kho .............................................................................................................. 61

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    1. NGUYN LIU LM BNH M

    1.1 Bt m

    Bt m l nguyn liu chnh sn xut bnh, c chbin tht la m. Bt m chai loi: bt m trng v bt m en. Bt m trng c sn xut tht la m trng, bt m

    en c sn xut tht la m en.

    Ngun nguyn liu chyu ca nc ta l nhp tnc ngoi (nhp bt m v la

    m) v ta chnhp loi la m trng. La m trng c hai loi: loi cng v loi mm. La

    m cng c cht lng cao hn.

    1.1.1 Cc thnh phn chnh ca bt m

    Thnh phn ha hc ca bt m phthuc vo thnh phn ha hc ca ht v ph

    thuc vo ht bt. Nhng c im thnh