Cau 19

Bao wan che bien trung

Bq : nhiet do thap

Uop lanh trung moi ko ban ko nut

Nhiet do -150c do am 85-90 bq 6 thang

Thong gio de am deu

Xoa dau khoang len vo tranh am ,kho ,o2 vao trung

Dong lanh :truoc tach vo nhiet do 5oCdap 12-15oC dong lanh nhiet do -18-20

Bo sung 5%nacl de long do tan de

Tan bang nhiet do 12 trong 48h

Lam kho trung :tach vo tach long do .long trang

Long trang len men -> loai duong gluco za

Bo suing duong sscharoza hoac lactoza lam tan long trang =men trip sin truoc say kho

Say = lo quay nong chan ko hoac phun mu =bot do am 1%

Dung hoa chat co2 o3 muoi an voi

Co2 15% o3 0,6ppm dua vao kho lanh de bao quan

Nacl 12% +trobep 82% -boc trung 1cm de khon

Va nhiu chat bq khac