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KHOA HQC - CONG NGH£ KET QUA NGHIEN CUU CONG NGHE VA CHE TAO THIET Bj DIET MEN CHE XANH BANG VI SONG NANG SUAT 45-60 KG CHE BUP TUtJl/Gia Phgm Nggc Tuyen ' Nguyin Ndng Nhugng , Li Minh Tien , Nguyen Nggc Binh ^ TOM TAT Trong chi biin che xanh, khdu diet men dong vai tro quan lrong vd Id yeu to ddu tien quyit dinh tai chdt luang sdn phdm vd dnh hudng tdi cdc cong doan Hep theo Dd nghien cim dua duac quy trinh cong nghe vd thiet ke, che tgo duac thiet bj di4l men che xanh bdng vi song ndng sudt 45 - 60kg che hup tuai/ gid vdi thdi gian diet men - phut, nhiel khoi che buong diet men 84°C ±2''C, dm che sau diet men 59 - 61,6%, diet men triit de vd khong phu thuoc vdo kich thuac,do to nho cua bup che Thiet bi ldm viec on dinh, duac gidm sdi vd dieu khien tu dgng Chdt luang sdn phdm che cao, hdm Iuang cdc chdt nhu tanin, chdt hod lan, dudng, axilamin, deu cao han so vdi phuang phdp diet men truyen thong Tir lihoa: Diet men che bdng vi song RESULT OF THE TECHNOLOGY RESEARCH AND MANUFACTURING FACILITIES WITH MICROWAVE TEA YEAST YIELD TEA LEAVES JAIL 45 -60 KG / HOUR TO PRODUCE HIGH LEVELS OF GREEN TEA Pham Ngoc Tuyen ', Nguyen Nang Nhuong^, Le Minh Tien ^, Nguyen Ngoc Binh ^ SUiVIMARY In the processing of green tea, yeast stage plays an important role and is the first factor to decide the quality of products and affect the next stage Research has come up with technology and process design, equipment manufacturing is green tea with yeast yield microwave 45 - 60 kg tea leaves / hour with yeast time 4-5 minutes, the temperature of tea blocks yeast chamber 84 ** C ± " C, relative humidity yeast tea after 59 to 61.6%, yeast thoroughly and not depend on size, to small tea leaves Stabilizing equipment, monitored and controlled automatically High quality tea products, such as the levels of tannin, soluble substances, sugar, axitamin, are higher than the traditional method of yeast Keywords: Yeast by microwave tea I DAT VAN DE Trong che bien che xanh, khau diet men dong vai tro het sue quan trpng la ySu t6 diu ti§n quySt dinh toi ch4t Iugng san phlm va anh huong toi cac cQng doan tilp theo Cong nghe diet men che xanh truyen th6ng hien la thong qua tang nbiSt doi voi la tuoi dl ki§m chl boat tinh cua men co la che va khuleh tan thuy phan e6 la che moi truong Men — ' ThS Vi6n CO di6n nong nghiep v& cong ngh? STH TS Vien ca dien nong nghiep va c6ng nghg STH ' ThS Vien co di?n nong nghiep v^ cong ngh^ STH * ThS Vien Khoa hoc Nong lam nghiep miln niii phia Bk ^^ ^ la che ton tai the tuyin hat ik bao la, cong nghe san xuat che xanh hien su dung rO^g r^i phuong thuc diet men truySn dan tang nhiet, kho eo the nhanh chong nang cao nhi?t la che de thuan hoa ho^t tinh ciia men Hon "^^^ sir ehuyen dgng ciia eua ehe da lam cho nhieu ehat loai phenon oxy hoa, sinh hien tugng la, ggng, lam giam chdt lugng cua che sau che bien Neu ap dung phuong phap tang nhiet thilt bi ehe dl diet men, lai dl ,• v , • , ' , , , , , ' , , ', ^ ^^, •'^ * ^ ^ S chay canh, la che hoi vang, ^^ " " ' ^^^et, giam chat luong che Tit ca caC TAP CHf CONG NGHIEP NONG THON - SO 10 - 2013 KHOA HQC - CONG NGHE thiet bj diet men hien diu kho dat dugc hi$u qua eiing nhu chSt lugng mong mu6n Nhung nguyen nhan l ^ cho chit lugng che xanh ciia Viet Nam thdp va khong 6n djnh neu tren rat kho khac phuc vi phu thu6c chii yeu v^o yeu to chii quan ctia ngucri Do vay can nghien cuu, ung dung cong nghe moi diSt men che xanh, iing dung cong nghe vi song can duge uu tien Dac dilm cua phucmg phap diet men che bang vi song l^ thoi gian gia nhiet nguyen lieu r§t ngSn va khong phu thuoc vao kich thuac cua la ehe, khong phu thuoc vao chieu dai, to nho ciia cgng che, phuong thiic truyen nhiet tir nguyen lieu ngoai be mat, nhiet ben va ben ngoai tang len rat nhanh vay miic diet men rat nhanh ehong va triet de II NQI DUNG VA PHU'ONG PHAP NGHIEN CUtJ 2.1 Noi dung nghien ciru Lua chgn nguyen ly, ket cau mlu may nghien ciiu Nghien ciiu, thiSt ke, che tao mau may thl nghiem diet men bang vi song Nghien eiiu xay dung quy trinh cong nghe diet men bang vi song phu hgp voi dieu kien Viet Nam Che tao, lap rap mlu thiet bi diet men che xanh bang vi song nang suat 45 - 60kg che bup tuoi/ gio de san xuat che xanh cao cap Thi nghiem, danh gia chat Iugng Iam viec eiia thilt bi diet men che xanh bang vi song 2.2 Phirffng phap nghien cun - Phuong phap chuyen gia de danh gia, Iua chon nguyen ly, kit cau mau may nghien cuu; - Phuong phap thii nghiem phong thi nghiem va thuc te san xuat; - Phuong phap danh gia chat Iugng san phdm (theo cac TCVN va TCN): + Phuang phap danh gia ham lugng banh te (TCVN - ) + Phuang phap thir nem che xanh (TCVN 3218-1993) + Phuang phap xac djnh miic dp diet men (10TCN-I55-) + Phuong phap xac am cua nguySn lieu sau diet men ( TCVN 5613-1991) - Thiet hi phuc vu nghien ciiu: + Thilt bj nhiet bang hong ngoai Testo 830-1 + Thiet bi do am ban dan + Thiet bi toe vong quay Testo470 + Thiet bi cucmg tir truang TM-195 + Thict bi cuong dp vi song REED ST-2G III KET QUA VA THAO LUAN 3.1 Lu^a chon nguyen ly thiet bi diet men che xanh bang vi song Qua qua trinh khao sat eae thiet bi diet men bang vi song cua nuac ngoai che tao va qua ket qua khao nghiem mau may diet men bang vi song Trung Quoc che tao, da lira chgn dugc nguyen ly, eau tao thiet bi diet men che xanh bang vi song nang suat 45 - 60 kg che blip tuoi/ gio de san xuat che xanh cao cap (hinh 1) D GIn Q m Hinh Sa cdu tao thiit hi diet men che xanh bdng vi song Cym pheu cap lieu; Cum buong diet men; H^ thong cac b6ng phut vi song; Cum tii dieu khien cho tung buong diet men, 5, He thong quat lam mat thiet bj dien; Quat hiit thai dm; Tii di^u khign thi6t bj, Cum khung bf bang tai lieu; Cum tang chii dpng, tang bj dpng; !0 Quat lam ngupi san phdm, 11 Bang tai chju nhiet Hoat dgng cua tiiiet bi nhu sau: Nguyen lieu sau sii Iy hong heo so bg dugc du'a vao pheu cap lieu ciia thiet bi diet men bang vi song Nguyen lieu se dugc rai deu Ien bl mat bang tai dang chuyen dgng Do day mong CLiii lap nguyen lieu c6 the dieu ehinh dugc, vice dieu chinh chieu day cua lop nguyen TAP CHi CONG NGHIEP NONG THON - SO 10 - 2013 21 KHOA HQC - CONG NGHE lieu phy thuge chung loai nguyen lieu v^ Hinh dang va kich thuoc tilt di?n ngang miia vu thu hai Toe dg chuyen dgng cua bang ciia Idp vat liSu tren tdm bSng chuyln d6ng phy tai dugc dieu chinh de dam bao thai gian thuoc vao nhieu ylu to: Van t6c va miic chuyln nguyen lieu di chuyen cac bu6ng vi song dgng dieu hoa ciia tam bang; chilu r6ng tim diing theo yeu cau cong ngh? d6i vai timg loai bang; hinh dang va duang kinh ciia cac true nguyen liSu dua vao san xudt Cac buong vi ian do; klioang cac cac true Ian tren nhanh song dugc thiet ke theo tiing modul lap phia CO tai va tinh chat co ly cua vat lieu van tren bang tai, thiet bi c6 the dieu chinh eong chuyen; Cau tao nen di§n tich chiia vat li?u ciia suat phat vi song khac thong qua qua trinh mgt hay nhieu eon lan tgo nen dong cat so lugng bong cao tan Nguy§n lieu Trong truong hgp tam bing phlng thi tilt tren bang tai s6 tir tir ehuyen dgng vao cac dien ngang ciia vat lieu roi tren bang dugc gidi buong vi s6ng, phia tren co lip cae bdng cao han boi hinh parabon chilu day lap vait tan phat vi sdng Nho co nang lugng vi song lieu dugc xac dinh nhu sau: den tir cac phia ma nhiet cua lop nguyen lieu xb(m) tang len nhanh chong lam pha huy he th6ng enzim la che va cuong che Hcri nuoc Trong do: thoat qua trinh diet men dugc quat hut h: chieu day lap vat lieu tren bang tai; day ngoai Che xanh sau qua cac bu6ng b: Chieu rgng lap vat lieu tren bang tai; vi song hoan qua trinh diet men dugc lam B: Chieu rgng ciia tam bang tai; ngugi nhanh va dugc ea cau gat thao lieu gat Theo thuc nghiem chieu rgng lop vat lieu khoi bang tai dua sang cong doan ebl biln tilp tren bang dugc xac dinh nhu sau; theo b = 0,9 B - 0,05 (m) 3.2 Tinh toan, Iua chQn m6t so th6ng so Khi tiet dien ngang eiia lop vat Heu fren cac thiet bi chinh tam bang tai chuyen dgng: 3.2.1 Tinh todn thiet ki he thdng bdng tdi lieu F = - x x / i = 0,66666 X 0,08336 = 0,0555 x h^im\ Thiet bi diet men blng vi song dugc thilt kl kilu bang tai Thilt hi lam vigc lien tuc, mgt ddu Thay tri so ciia F vao cong thiic Q tir ta cap nguyen lieu ddu ldy san phdm Thilt tinh dugc nang suat cua bang tai: bi di$t men blng vi song dugc thilt kl theo yeu Q = 3600X0,05556^ y-yy^vitlh) cdu nang sudt d^t 45 - 60kg ehe blip tuoi/ gio; Q = 200b-xyXV = 200(0,9B-0,05)^ xyxv^t/h) qua trinh diet men triet dl, chin d6ng diu; Nhiet diet men dugc giam sat va dilu khiln tu dong Q = \SOB^xyxv{tlh) - Voi khoi lugng rieng ciia che tuai khoang Nang sudt cua bang tai dugc tinh theo cong thiic: 90-120 kg/m^ Chgn y = 90 kg/m^ Q = 3600 X F X Y X V (t/h) - Tren ca sa kit qua khao nghiem vai tiioi Trong do: gian luu buIng diet men tir din 4,5 phiit Q: nang sudt cua bang tai (t/h); F: Dientichtiltdien ngang dong vat lieu (m^); till cho chat lugng che diet men la tot nhlt v: Van tic chuyln d6ng ciia tdm bang (m/s) - Chgn bl rgng ciia bang tai B = 500mm - Vdi nang sudt diet men yeu elu dat 45 - 60 kg y: Khii lugngriengvat lieu van chuyln (t/m'); Khi da bilt nang xudt yeu clu, cdn xac dinh che hup tuoi/gio, thay vao congtiiuctren ta xac #ih dugc toe chuyen dgng ciia bang tai la: va lua chpn cac thong s6 F va v theo quan he : v = 0,01778 m/s 3600xvxy 22 TAP CHl CONG NGHIEP NONG THON - SO 10 - 2013 KHOA HQC - CONG NGHE - y6i toe dO bang tai la 0,018m/s va thoi gian can thiet dd nguyen lieu luu a bu6ng diet men la 260 giay thi chilu dai bang tai CO tac dgng vi song la: Lvs = 0,018m/s x 260 = 4,68 (m) Vay chgn chieu dai bang tai qua bu6ng vi song la Lvs = 4,8 m Tong chieu dai toan bg bang tai g6m bg phan nap lieu, b6 phan ngan chan vi song truoc va sau buong diet men, bg phan lam mat va thao li?u la 9,3 m Viee dieu chinh nang xuSt ciia bang tai Heu CO the blng nhieu each : + Dieu chinh nang suat blng each tang ho?c giam chieu day ldp vat li$u tr6n bang tai + Dieu chinh bang each tang hoac giam van toe chuyen dgng ciia bang tai 3.2.2 Lua chon bQphdt vi song Qua qua trinh nghien ciiu, tim hiSu khao sat cac thiet bi diet men bang vi song cua nuoc ngoai che t ^ va qua ket qua khao nghiem mlu may diet men blng vi song cua Trung Quoc chl tao, nhan thay bg vi song duge ung dung cac 16 vi s6ng gia dinh hay cac 16 vi song eong nghiep hien thuong la Ioai co tan so 2450HZ va co cong suit 1000 din 1500 watts 600-800 Watts dimg cho biic xa, va c6ng suat c6n lal thi dimg cho magnetron Ban chat ciia vi song ciing giong nhu anh sang va cac song radar: doi voi song vi-ba, thuy tinh hay sanh sii dugc xem nhu suot nen song di xuyen qua, cac mat phang kim loai thi gi6ng nhu nhimg tdm guong nen song bi phan chieu tro lai Nhung mat khac vi song dugc hip thu rdt manh boi cac phan tii nuae Viec lap dat cac bg phat vi s6ng buong diet men phai dam bao vi song tac dgng deu khap len bl mat bang tai chiia Heu Khi vi song tac dgng len cua buong diet men se bi phan chilu tro Iai gap lop vat lieu tren bang tai se dugc hap thu hoan toan Cac bong phat vi song can dugc lap so le cho song dugc phu diu Ien be mat bang tai chiia lieu 33 Thiet ke, che t^o v^ khao nghidm thiet bi 3.3.1 Thiet ki, che tgo thiet hi Vai cac thong so lira chgn, da thiet, che tao thidt bi diet men che xanh bang vi song nang suat 45- 60kg che blip tuoi/ gia (hinh 2) Hinh Thiet bi diet men bdng vi sdng ndng sudt 45 - 60kg che blip luai/gia 3.3.2 Ket qud khdo nghiem a) Khdo ngliiem ddnh gid khd nang va nang suat ldm vifc ciia thiet bi di^t men bang vi song Voi mau may diet men ehe xanh bang vi song da nghien ciiu, thiet ke, che tao, tien hanh thi nghiem de danh gia kha nang va nang suat cua tiiilt bi - Qua trinh thir nghiem diet men dien nhu sau: Nguyen lieu sau duge hong heo dugc vao phlu cap lieu cua may diet men bang vi song Bang tai chuyen dgng ben duoi se dua nguyen lieu vao buong diet men Thanh gat lieu se gat Iai pheu phan nguyen li?u thira phia tren Nguyen lieu la che blip tuai dugc rai deu tren bl mat bang tai voi chieu day lop nguyen lieu la 20mm va be rgng la 500mm dugc dua vao buong diet men Duoi tac dung ciia vi song nguyen lieu la che blip tuoi dugc lam chin mgt each nhanh chong va dugc bang tai dua ngoai va dugc quat thoi Iam ngugi Nhiet qua trinh diet men tu dgng dieu chinh 85°C Hai am sinh qua trinh diet men dugc quat hut thai ngoai moi truang - Thir nghiem lien tue tren may diet men sau lay ket qua trung binh ta co ket qua ghi a bang TAP CHI CONG NGHIEP NONG THON - SO 10 - 2013 23 KHOA HOC - CONG NGHf TT Bang Kit que T6cdQ Thai bang gian tai luu (m/s) may (giay) thu nghidm diet men bdng v; song vai DO am Thoi Chieu Nhi?t dp nguyen gian day lop liru nguyen nguyen li^u sau li^u li?u di^t men buong tren sau di$t bang di$t tai men men (mm) (°C) (giay) 83-84 62-64 218 20 (%) 0,22 418 0,0185 497 258 20 83-84 60-62 57-59 0,0175 525 274 20 84-85 60-61 54-56 0,016 575 300 20 84-85 59-60 50-51 0,014 657 342 20 84-85 - 59 42-43 - Diet men bang vi song nSng suit dat 45 d&i 55 kg gio Thoi gian di$t men ngin tir - Sphilt D5 am sau diet men dat yeu cau s ^ xuit Blip che sau diet men chin dong deu v& van giiJ nguyen dugc milu sac, che co miii thom dac trtmg, la va blip non khong bi chay xem cgnh - Thiet bi diet men b3ng vi song lam viec 6n dinh va co thg lam viec li6n tuc thoi gian den gio ThiSt bi ttr dgng diSu chinh nhiet lam viec voi sai so ± 2*'C b) Khao nghiem ttdnh gid chat linfltg sin phdm cua cong nghf di^t men bdng vi song so voi vai phttong phdp dift men truyin thon^ Voi mlu may diet men che xanh bang vi song da nghien ciiu, thiSt kl, ch6 tao, tijn hanh thi nghiem san xuit chi xanh theo cong nghe diet men bang vi song - Che nguySn lieu blip tuoi lam thi nghiem tir gidng PhiiC Van TiSn La giflng nhap npi tir Tnmg Qu6c vao ViSt Nam nam 2000 Giong che CO dac diSm dien tich la trung binh, la mau xanh sang, luong bip trung binh, nang suit kha cao Day la gidng chuySn dS chS biSn 24 giong chi Phiic Van Tien Nang Nhan xet sa bO suat kg/gid 68-70 La che xanh chin tuong ddi diu, ldp che phia tren chin hon I6p duoi, dp am cao La che xanh, chin deu co miii thom, dg am hai cao La che xanh, chin dSu, co miii thorn dac trung, dp dm d^t yeu cau La che xanh, chin d§u, CO miii thom dac trung, dp Im thip Che chin qud, la che xanh va bj kho che xanh chat lugng cao, gi6ng dugc trflng tai tat ca cac tinh tr6ng che tren ca nuoc, hien xu ths cac dia phuong dang mo rflng dien tich tren toan quflc - Dfli chung la san pham che xanh dugc chi biSn bang phuang phap truySn thdng tir nguySn lieu giflng che Phiic Van Tien thi nghiSm ttSn - Quy trinh cong ngh? da xay dung va ap dung dS chS bien san phim che xanh phuc vu danh gia chit lugng san phim: Nguyen li|u -^ Heo nhe - • Dift men bing vi song ( dfli chiing diet men) -> Vo lin - • Ru toi -.V6 lin - • Ru tod -> Siy so bp —• Lam ngu0i, can bing im —> Sao dinh hinh —» Lam ngufli, can bang im —> Sao kho —> Phan loji —» Danh huong —> Thanh phim DS CO CO so kSt luan hifu qua cua cflng n^S diet men vi song v6i cflng nghe trayin thflng, chiing tfli thuc hien cac thi nghiem va tiSn hanh phan tich sinh hfla dS so sanh * Nghien cim hoQt tinh men, dg dm che sau diet men va he sd k (qui ddi tu tuoi sang kho) Ket qua ghi a bdng TAP CHi CONG NGHIIP NONG THON - SO 10 - 2013 KHOA HQC - CONG NGHE Bdng Ket qua phdn tich hoat tinh men dm va he so k Hoat tinh men TT Ten mlu HS sd qui doi Dp am (mlKJOj0,0IN/lghonhap enzyme - acetone) (%) tir tuai sang khd Kl K2 Mlu 01 2,2 59,0 4,30 4,80 Mlu 02 2,4 60,2 4,20 4,70 Mlu 03 2,4 61,6 4,20 4,70 Mlu 04 2,3 61,0 4,22 4,80 Mlu 05 2,5 60,2 4,21 4,70 Mau 06 2,4 61,6 4,20 4,70 Mlu 07 2,3 61,5 4,25 4,80 Mlu 08 2,5 60,2 4,17 4,70 Mlu 09 2,4 61,6 4,23 4,70 10 Doi chimg 01 4,4 60,1 4,40 5,03 11 Ddi chirng 02 4,6 60,7 4,40 5,10 12 Ddi chiillg 03 4,2 61,2 4,40 5,12 Qua cac ket qua phan tich sinh hoa cae mau thi nghiem va doi chimg chiing toi c6 mgt so nhan xet sau: + Hoat tinh men cua cac mau thi nghiem deu thip hon doi chirng diet men bang cong nghe truyen thong rat nhieu Tai cac mau thi nghiem, eac chi so boat tinh men giao dgng khoang 2,2 den 2,5 nhien tai 03 mau doi chiing thi chi so hoat tinh men lan lugt la 4,2; 4,4 va 4,6 Nhu vay boat tinh men cua mau d6i chiing cao hon mau thi nghiem tir 84-90% Trong chk biSn che xanh, yeu cau phai diet men tiong blip che tuoi de ban che toi da hoat dpng cua men lam biln doi chat lugng che theo huong kh6ng co lgi Tuy nhien thue t8 cho th4y hiu nhu khong the tieu diet hoan toan men blip che, vi vay chi bien cin giam thilu t6i da hoat dgng ciia men, hoat tinh men cang thip cang co lgi qua trinh che bien che xanh Nhu vay chiing ta co thl ket Iuan, diet men bang vi song lam men biip che bi diet tiet de ban so voi phuang phap truyen thong, vi vay se co tac dung tot doi vai cae eong doan che bien tiep theo va giiip nang cao chat Iugng che pham + Ket qua phan tich am che sau diet men cho thay, cac mau thi nghiem va mau che doi chimg deu dat yeu cau cong nghe che bien che xanh Voi am tir 59-61,6% che dam bao dat yeu cau, vo che se eho san pham xoan chat, che it bi vun nat Tir co the kit luan, diet men bang \ i song cho am che dat yeu cau cong nghe doi voi che bien che xanh cap cao + Nghien ciiu he so quy doi tu che tuoi kho cho thay, nhin chung ehe diet men bang vi song CO he so kl va k2 deu thap hon cac mau che doi chimg, nhien sir chenh lech la khong dang ke Xet ve goc chi phi san xuit thi diet men bang vi song co chi phi thip han diet men bang phuang phap truyen thong TAP CHi CONG NGHIEP NONG THON - SO 10 - 2013 25 KHOA Hpc - C N G NGHE • Nghien dm thdnh phdn sinh hoa cac mdu chi thi nghifm TiSn hanh chS biSn cac mau chS theo quy tiinh cflng nghf nhu da nSu ta thu dugc cac mlu tl nghiSm va mlu doi chung Ket qua ghi a bang Bdng Kit qudphan lich sinh hda cdc mdu chi TT Kl hiSu miu Tap chit If Tanin Chat hoa tan Axit amin Cafein Duong (%) (%) (%) (%) (%) (%) 1,74 3,47 2,13 0,08 Mlu 01 27,16 Mau 02 28,37 43,15 43,32 1,82 3,37 2,55 0,10 27,77 42,66 1,66 3,51 2,22 0,12 Mlu 03 Mlu 04 28,23 42,16 1,73 3,51 2,08 0,13 Mlu 05 28,48 43,67 1,82 3,39 2,34 0,11 Mlu 06 27,90 43,60 1,69 3,42 2,27 0,15 Mlu 07 3,40 2,25 0,15 Mlu 08 42,50 42,34 1,68 28,10 28,20 1,76 3,57 2,18 0,14 28,12 3,43 2,21 0,14 22,33 42,51 40,24 1,69 10 Mlu 09 Ddi chumg 1,12 3,82 1,90 0,18 U D6i chiing 24,56 42,45 1,40 3,69 1,98 0,20 12 Ddi chiing 23,03 42,19 1,19 3,8! 2,08 0,21 Qua bai^ k&t qua phantichsinh h6a cac mau truyen thong Dg chenh lech dao dgng tir che thi nghidm va doi chung cho chiing ta thay: 6,7-7,8%, che xanh ham lugng axitamin + Doi v6i ham lugng chat tanin: cac mau che cao lam eho nuoc che han ddng thoi sMi bien co di6t men bSng vi song ham lugng dao hon Nhu vay lam cho chit lugng che xanh dugc dgng o 26-28%, mau che che bien theo nang len dang kl phuong phap tmyen thong ham lugng dao ^ng a + Duong: Ham lugng ducmg s^n phim miic 22-25% Nhu vay eo the noi qua trinh diet diet men bang vi song cao hon mau d6i chung tfit men bang vi song da kh6ng lam biln d6i nhilu 8,1-9,1% Nhu vay co thl khing dinh qua trinh ham Iugng tanin hay noi each khac diet men bing diet men bang phuang phap truyen thong lam phuong phap truyen thong ham lugng tanin bi hao t6n thit ham lugng du6ng cao hon diet men ton hon di?t men bSng vi song, lugng hao ton bang vi song, \^ vay phuang phap diSt men bar^ cao hontii15,5-21,2% vi song CO chat lugng san phdm cao hon + Doi vai chat hoa tan: Kit qua tren cho + Cafem: Ham lugng Cafein che di§t thay ham lugng chat hoa tan mlu che chl men bang vi song nhin chung khong co nhieu bien bang diet men vi song diu cao hon mau sai khac so voi che chl biln theo phuong phap che ddi chimg tir 2,8-4,8% Nhu vay co thl thiy tmyln thfing, nhien nhin t6ng thl ham ca ehe diet men bang vi s6ng eho ham lugng lugng mau diSt men bang vi song van chit hoa tan cao hon so voi diet men truyin thip hon ch6 chl biln truyin tiling Nhin th6ng Day la dilu co lgi cho chit lugng san chung ham lugng cafein san phim diet pham che xanh men bing vi song khong qua thip, no vln du dl + Doi vdi ham lugng axitamin: Ham lugng cho san phim dat chit lugng va nim ttong axitamm mau che diet men bing vi song pham vi cho phep ciia tieu chuin ehe xanh chat lugng cao cao hon so voi che che bien bang phuang phap 26 TAP CHi CONG NGHlf P NONG THON - SO 10 - 2013 i • KHOA HQC - CONG NGH? + Tap chat la: Nhin chung ty 1$ tEip chit la cua ca mlu san pham thi nghiem va ddi chiing deu nam duoi nguong cho phep cua tieu ehuin che xanh chat lugng cao Tuy nhien tir kit qua phan tich tren eho thiy tj- IS tap ehit la san pham diet men bing vi song it hon bin so vai diet men bing phuong phap truyin thdng, thip ban khoang 29-55% Nhu vay diet men bing phuang phap vi song vdi co che khac phuong phap truyen thdng nen khdng lam eho canh ehe bi ehay xem, vi vay che khdng bi lan vun, bui nen san phim co it tap chit la Day la dilu CO lgi chl biln san phim bdi nlu chk kho lan nhieu tap chat la pha lam che bi nhilm mui lg, nuoc che khdng trong, lln nhilu can lam anh hudng den chat lugng san phim + Nhin chung ham lugng eac chat hda hgc che phim che bien bing phuang phap diet men bang vi sdng cd ham lugng cac chat nhu taiun, chat hoa tan, duong, axitamin, deu cao ban mau ddi chiing, rieng ham lugng cafein cd su sai khac khong Idn lam Dieu CO thl khing dinh tdn that cac chat qua qua trinh diet men chl biln che xanh bang cdng nghe vi sdng it hon ban diet men bang phuong phap truyin thong, do co co sd de khang dinh, san pham dugc diet men bang cong nghe vi sdng co ehat lugng san pham cao ban phucmg phap doi chiing * Nghien ciru chal luang qua ddnh gid cdm quan cdc mdu che thi nghiem Tien hanh che bien cac mau thi nghiem va ddi chiing theo quy trinh cdng nghe da neu d tren, chiing tdi thu dugc cac mau che khd Cac miu che dugc giii phan tieh tai Hgi dong thir nem cam quan - Trung tam Nghien eiiu va Phat trien Che, ket qua thu dugc ghi d bang Bdng Ket qud thu nem cdm quan mdu che thi nghiem \ Chitieu \ danh \gia CTTN\ Mau so 01 MIU sd 02 Mau sd 03 MSu so 04 Mau so 05 Ngoai hinh Nhan xet Diem Xoan, canh xanh tv nhien 4,25 Xoan, canh xanh tv nhien 4,75 Xoan, canh xanh t\r nhien 4,5 Xoan non, xanh thoang tuyet Xoan xanh thoang tuylt Mau nudc Nhan xet Diem Xanh vang, 4,25 khong CO can Xanh, trong, 4,75 khong CO can Xanh, trong, 4,75 khong CO can Hucrng Vi • Nhan xet Diem Nhan xet Diem Tong diem Xep loai Thom huong giong 4,5 Dju, CO hau 4,25 17,30 Kha Thom tir nhien 4,5 Diu, CO hau 4,5 18,75 Tdt Thom tu nhien 4,5 Dju, CO hau 4,5 18,15 Tot 4.5 Vang xanh sang 4.25 Hucmg thom khong ben 4.25 Chat dju 4.25 17.25 Kha 4.25 Vang xanh, 4.25 Co huong 4.25 Chat hoi xit 4.25 17,00 Kha TAP CHi CONG NGHIEP NONG THON - SO 10 - 2013 KHOA HQC - CONG NGH$ Mausd 06 Xoan, canh xanh tu nhien 4,50 Xoan non xanh canh, 4.50 thoang tuyet Xoan xanh Mausd 4.25 thoang 08 tuyet Xoan, Mau so canh xanh 4,00 09 tham Xoan, Doi canh xanh 4,00 chung 01 tham Xoan, Doi chung canh xanh 4,00 02 tham Xoan, Ddichiing canh xanh 4,00 03 tham Mau so 07 Xanh, trong, khdng cd can 4,50 Thom tv nhien 4,5 Dju, cd h^u 4,5 18,00 Kha Vang xanh, 4.25 Huong thom 4.25 Chat hoi xit 4.25 17,25 Kha Vang xanh 4.25 Co huong Chat hoi xit 16.40 Kha 4,25 Dju, cdhau 4,00 16,45 Kha 4,5 Dju, c6h|iu 4,00 16,75 Kha 4,25 Dju, coh^u 4,25 16,9 Kha 4,5 Dju, coh^u 4,25 17,05 Kha Xanh vang, hai vancSn Xanh vang, hoi van c^n Xanh sing, Xanh vang, hoi vanc^ 4,25 4,25 4,50 4,25 Qua ket qua danh gia cam quan tren chung toi c6 nhein xet nhtr sau: + Ve ngoai hmh; Che diSt men bing vi sdng canh che xoan ggn, khdng co bdm cang, che sach Canh che mau xanh tu nhien, eo tuylt Che diet men bing phuong phap truyin thong canh che cung ggn dep nhung mau sac canh che chua dugc xanh luc nen gia tri thap hon + Mau nudc: Che diet men bing cdng nghe vi song eho mau nudc xanh hon, ttong ban va dac biet it can hon Che diet men bang phuong phap truyen thdng cd nhieu vin due va can ban + Huong: Che diet men bing vi sdng tiiom hon men da dugc diet triet dl hon, miii hang ngai hiu nhu khdng xuit hien Che di?t men bing phuong phap truyin thdng co huong ylu hon + Vi: Che thi nghiem cdng nghS vi sdng cho vi diu hon, hau nggt hon che diet men bing phuong phap tt^yln thing Thom huong gidng Thom huong giong Thom huong gidng Thom huong gidng I Hinh Thu nghidm thiit bi di4t men bdng vi song ndng sudt 45 - 60kg che biip tuai/gid Nhin chung di?t men bang cdng nghe vi sdng cho chat lugng cao hon cdng nghe truyen thdng, san phim khdng cd mui vi la Canh che xanh tu nhien, nuoc trong, huang vi tot Ket qua thl hi?n bing dilm sd cao hon, ckc mlu thi nghi?m cd mau dat lo^ tlt 07 mau dat loai kha ttong mlu ddi chiing diu dgt loai khd (Xem tiip b-ang 35) TAP CHI CONG NGHIEP NONG THON - SO 10 • 2013 ... diet men bang vi song Nghien eiiu xay dung quy trinh cong nghe diet men bang vi song phu hgp voi dieu kien Viet Nam Che tao, lap rap mlu thiet bi diet men che xanh bang vi song nang suat 45 - 60kg. .. chgn, da thiet, che tao thidt bi diet men che xanh bang vi song nang suat 45- 60kg che blip tuoi/ gia (hinh 2) Hinh Thiet bi diet men bdng vi sdng ndng sudt 45 - 60kg che blip luai/gia 3.3.2 Ket qud... mau may diet men bang vi song Trung Quoc che tao, da lira chgn dugc nguyen ly, eau tao thiet bi diet men che xanh bang vi song nang suat 45 - 60 kg che blip tuoi/ gio de san xuat che xanh cao cap
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