SN XUT NC CHANH DY LN MENSVTH: NGUYN TH M LINH NGUYN TRNG SINH PHM TH THU HUNH CM T

NI DUNG BO COU IM CA LN MEN BNG VI SINH VTGII THIU V CHANH DYH NM MENTNG QUAN V QU TRNH LN MENQUY TRNH LN MEN NC CHANH DYTI LIU THAM KHO

U IM CA LN MEN BNG VI SINH VT1. Thi gian th h ngn, tc sinh sn nhanh 2. C s tng vt s lng c th 3. C cu to b my di truyn n gin 4. D nghin cu bng cc k thut vt l v ha hc

Tn khoa hc: passiflora edulis. H passifloraceae, B violales. Chi passiflora hin c hn 400 loi, trong c khong 60 loi cho tri n c. Tn ting Anh l: Passion Fruit.

GII THIU V CHANH DY

Nc qu tri chanh dy c hng thm, v ngt v c hm lng axit khong 2%. Dch qu cha nhiu Vitamin A v C cng nhiu nguyn t vi lng c ch cho tim mch

Thnh phn ha hc v vai tr ca chanh dyThnh phn ha hc ca tri chanh dy cho 100g dch

H nm menLoi Saccharomyces cerevisiae

Ging nm men Saccharomyces cerevisiae c nhiu u im []: Ln men nhanh v su cc loi ng. Kt lng tt, do d tch sinh khi nm men ra khi dch ln men. To mi thm c trng cho ru vang. Bn vng vi ru, acid v cc cht st trng

Tng quan v qu trnh ln menLn men NGK l qu trnh ln men ym kh vi s c mt ca nm men, chng s chuyn ha ng ln men thnh etanol v CO2. Tc nhn chnh ca qu trnh ln men nc gii kht l nm men Saccharomyces cerevisiae.

Da vo c tnh ca qu trnh ln men m chia lm 2 dng chnh:Nm men ni: Gy ra s ln men ni, ln men nhit cao t 20-28oC. Nm men chm: Qu trnh ln men chm nhit 5-10oC, CO2 thot ra t trong qu trnh ln men, nm men y thng ln men.

C ch ca qu trnh ln men

Ru v CO2 c to thnh theo phn ng tng qut sau:

C6H12O6 + 2ADP + 3H 3PO4 = 2C2H5OH + 2CO2 + 2ATP + H2O

S ln men ethanol

Ln men ethanol c chia lm hai thi k:Thi k cm ng: L thi k u hng phn ng xy ra theo chiu (1). Lc ny sn phm l glyxerin. Thi k tnh: chiu phn ng (2), lc ny sn phm ch yu l ethanol v CO2.

ng hc ca qu trnh ln menQu trnh ln men chia lm 3 thi k.Thi k u: Khong 60 h u k t lc cho t bo nm men tip xc vi dch ln men.Thi k 2: y l thi k ln men chnh., chim khong 60 120 h sau thi k u.- Thi k cui: y l giai on ln men ph, qu trnh ln men din ra rt chm.>>>Thi k ln men chnh l thi k bin i su sc cc thnh phn trong dch ln men. Chng nh hng n kt qu ca qu trnh ln men.

Cc yu t nh hng n qu trnh ln mennh hng ca nng ngnh hng ca nhit nh hng ca pH mi trngnh hng ca oxy nh hng ca nng ru v CO2 nh hng ca s lng t bo nm men

Nhng k thut p dng chung cho ln men a. Chng oxy ha nc quKhng lm dp nt qu trong sut qu trnh.Va tch dch xong cn tin hnh ln men ngay.Dng nhng bin php l ha hn ch oxy ha.Cha dch trong thit b c CO2 thay cho O2X l nhit cng l mt bin php chng oxy ha c hiu qu.b. Theo di qu trnh ln menTheo di lng bt kh bay ln, nu thy tc ln men chm th cn b sung thm nm men ngay.

Cc sn phm ph to thnh trong qu trnh ln menS to thnh glyxerinS to thnh acid hu cS to thnh esteNgoi ra trong qu trnh ln men cn to ra cc sn ph khc nh: aceton, diacetyl v 2,3 butanol.

Cc vi khun c hi cho qu trnh ln mena. Vi khun lacticy l loi vi khun ym kh, chng gm 2 loi: Lactic in hnh v lactic khng in hnh.b. Vi khun aceticOxy ha alcol thnh axit acetic vi khun aceticC2H5OH + O2 CH3COOH + H2O + 116 kcal.Trong mi trng khng c acol, vi khun acetic s oxy ha ng thnh acid gluconic..c. Vi khun butylic v cc vi sinh vt khc

QUY TRNH LN MEN NC CHANH DY

X l t0 = 400C T= 60 phtp ly dch Pha longNc 50%Phi chThanh trng t0 = 600C T= 15 phtChanh dy

ng, Na2CO3Enzyme pectinaza

X l sau ln men( iu v 6% syrup) Thanh trngChit chaiSn phmLn ment0 = 25-270C,TH = 200Brix, TLMTH = 1.5%, tTH = 72giPh TH = 4.0

TI LIU THAM KHO(1)http://www.vneasylife.com/modules.php?name=News&op=viewst&sid=17(2)http://kilobooks.com/threads/9488-Quy-tr%C3%ACnh-s%E1%BA%A3n-xu%E1%BA%A5t-n%C6%B0%E1%BB%9Bc-gi%E1%BA%A3i-kh%C3%A1t-chanh-d%C3%A2y-l%C3%AAn-men(3)http://vi.wikipedia.org/wiki/Chanh_leo_(Passiflora_incarnata) (4)http://vi.wikipedia.org/wiki/Saccharomyces(5)Mt s hnh nh su tm t internet.