Nghiên cứu chế biến canh chua ăn liền

KET QUA NGHIEN CiJU KH-CN CT&A VIEN C O N G NGHE SAU THU HOACH NAM 2 0 0 1<br /> <br /> <br /> <br /> <br /> NGHIEN c u t ; CHE Blf:N CANH CHUA AN LIEN '<br /> Nguydn Thanh Thuy, Nguydn Thj Ha, Nguydn Duy Due,<br /> Bui Bich Thuy<br /> Vien Cdng nghe Sau thu hoach<br /> <br /> <br /> Dc tai " Nghien cuu che hicn canh chua an lidn "dugc thuc hicn dua tren mpt sd kei qua vd so<br /> che, che' bicn rau, rau gia vi, sup rau khd ciia mgt sd cac bp mdn nghien curu cua Vien Cdng<br /> nghe sau thu hoach.<br /> Vdi muc tieu hoan thien quy trinh che bicn canh chua an lien vdi ddy du cac loai gia vj cdn<br /> thie't, dc tai da xac dinh dugc che dp say phii hgp cho mgt sd loai rau, cu, qua, rau gia vj trtn<br /> thie't bi sdy hong ngoai do Vien Cong nghe sau thu hoach thiet ke, che lao. Dd tai da nghifin cihi<br /> va xay dung dugc quy trinh che bie'n bdt me theo phuong phap kho, san pham thu dugc co chdt<br /> lugng cao, ma hien nay tren thi trudng chua cd hoac co rat it nhung loai san pham luong tu.<br /> San pham canh chua da tao dugc huong vi hai hoa, hop khdu vi cua ngudi Viet Nam, rat lifin sii<br /> dung trong thdi dai dd thi hoa, cong nghiep hoa va hien dai hoa. ^ ^ . ,<br /> <br /> I. DAT VAN DE<br /> O Vict Nam, canh chua la mdn an dac trung dupe nhieu ngudi ua thfch, chiing ta lai cd<br /> ngudn nguyen lieu ra't ddi dao, dac biet la cac loai rau gia vj, ngudn cac loai qua cd vj chua, cd<br /> huong dac trung cho canh chua nhu dua, sau, me chua, vi the viec san xuat canh chua an lien va!<br /> cdc san pham nhu hot gia vj canh chua, hot mc cung duoc dat ra.<br /> Trong nhung nam gan day viec dp dung ky thuat mdi trong chd bidn rau qua cua Vien Cdng<br /> nghe Sau thu hoach, dac biet la phuong phap say hdng ngoai da tao ra nhimg san pham say rau<br /> qua cd chat lugng cao nhu: duy tri dugc mau sdc, huiTng vj tu nhien, ham lupng cac vitamin, cd<br /> dp tiet trung dam bao yeu cau ve sinh an toan thuc pham.<br /> Tren co sd dd, chung tdi tien hanh dd tai "Nghien ctru che bien canh chua an lien". Viec<br /> nghien cuu dua tren cac ket qua ciia Vien Cdng nghe sau thu hoach vdi muc tieu hoan thien eae<br /> qua trinh che bidn canh chua an lien ciing vdi mpt sd cac san pham nhu bpt me, bpt gia vj canh<br /> chua nhdm tao ra cac san pham cd chat lugng, phd hpp vdi ytu cdu cua ngudi tieu diing, dupe thj<br /> trudng chap nhan.<br /> <br /> /.I' J<br /> II. VAT LIEU VA PHUONG PHAP<br /> Thf nghiem sir dung cac loai rau, qua ban tren thi trucmg. Cac nguyen litu rau qua dupe lua<br /> chpn dam bao cac yeu cau tuoi, du dd chin khi thu hoach. -• • '"'^ '>ii<br /> - Cac loai rau: ca rdt, dpc mung, can tay, hanh la, ngp,'mui tau, dt cay,...<br /> -I- Ca rdt chpn cu mau dd, vira phai, loi nho.<br /> + Dpc miing chpn loai banh te cdn tuoi, to be, thuon deu, mau xanh sang, khdng bj bam dap.<br /> - Cac loai qua: qua diia, qua me chua, qua sdu.<br /> <br /> <br /> <br /> <br /> 266<br />  + Trong cac gidng diia, da chpn loai diia Queen. Chpn dura cdn tuoi, khdng bdm dap, dat dp<br /> chin ky thuat (cd s6 mdt vang tii 3 mdt den 1/3 qua). /'^ '. <<br /> + Me qua: Chpn qua to, day, ddu qua, vd cd mau xanh nau xam, liic dd qua da du dd gia, ty<br /> le thu hdi thit qua d ty le eao nhat.<br /> - Cac loai nguyen lieu khac: ,. .!.w;? . -;; ; : •<br /> + Thit bd, Ipn phai tuoi, it md hoac khdng cd m9 •- ' r<br /> + MuP'i an, dudng, bpt ngpt, dau ihuc vat, va mPt sd phu gia thue phdm khac.<br /> - Thidt bj sir dung:<br /> + Tu sa'y hdng ngoai dai tdn hep (Do Vien Cdng nghe sau thu hoach che tao).<br /> + May nghidn, may trdn: sit diing loai mdy phdng thf nghiem.<br /> 2.1. NPidungde tai<br /> - Nghien ciiu cac bien phap xit ly va sdy rau qua bao gdm: rau gia vj, ca rdt, dpc mung, diia,...<br /> - Nghien ciiu quy trinh chd bie'n bpt me nhdm tao ngudn nguyen lieu keo dai san xuat canh<br /> chua an lien.<br /> - Nghien ciiu cac cPng thiic pbp'i trPn san phdm canh chua an Udn va vien gia vj eanh chua cP dac.<br /> - Danh gia cha't lupng san phdm va so bd tinh toan gia thanh.<br /> 2.2. Phuong phap cdng nghe<br /> Sir dung cac cdng nghe sdy, che bien va thie't bj cua Vien CPng nghe Sau thu hoach de hoan<br /> thien, nang cao cha't lupng cua san phdm canh chua an lien.<br /> Viec sa'y rau qiia dugc tien hanh theo cdng nghe mdi tren may sdy hdng ngoai.<br /> <br /> <br /> UI. KET QUA VA THAO LUAN<br /> 3.1. Qui trinh cong nghe che bien rau kho<br /> <br /> <br /> Nguyen lieu<br /> i<br /> Lua chon<br /> 'i'<br /> Rim<br /> i<br /> ':':':':':':':':':':':':':':':''•' Cdt, thai, dinh hinh<br /> i<br /> Xu ly nhiet ( chan...)<br /> i<br /> De rao, lam ngudi<br /> <br /> Sa'y khd<br /> <br /> Bao gdi<br /> y. y. y- y > > y y y y y- y y y y » emu':<br /> Thanhi pham .<br /> <br /> 267<br /> 3.2. Nghien ciiru anh hucmg ciia phuong phap xur ly tdri chat lupng rau say<br /> Cd rdt dupe thai midng day 3-4mm, dpc miing dupe thai lat xien day 4-5mm, cdc loai ck<br /> tay, mCii tau, hanh la, rau ngd dupe thai nhd dai 2-3mm, diia cat khoanh day 4 - 5nim (ndu qu£<br /> nho) hoac de quat (neu qua to). Su dung cac bien phap chan ke't hpp vdi xii ly hoa chait bdng cac<br /> dung dich bisunfit, axil citric hoac trong mdi trucmg kidm nhe. Cae ydu l6: ndng dd dung djch<br /> nhiet dd cua dung djch chdn, thdi gian chdn anh hudng rdit Idm ddn cha't cha't lupng san phdm sau<br /> <br /> Nguyen tdc thi nghiem: cd djnh mPt thdng sd' va thay ddi cac thdng s