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1、258 第三屆果蔬加工技術(shù)與產(chǎn)業(yè)化國際研討會論文中真空常溫快捷脫水技術(shù)陳澍1侯夢斌1楊宗龍2(福建省金方舟中醫(yī)藥研究所1 福清隆裕食品有限公司2350004)摘要為了解決多種易變、變質(zhì)的物料在采用傳統(tǒng)加熱方法脫水時,易ffj現(xiàn)質(zhì)量降低問題,特 設計r“巾真空常溫快捷脫水技術(shù)”。結(jié)果顯示,本技術(shù)能使物料在中真牽環(huán)境(213kpa)、常 溫狀態(tài)(2050)、短時間(0 53h)內(nèi)完成脫水,并能較好保留物料固有的色、香、味、形,同時 使產(chǎn)晶具有良好衛(wèi)生質(zhì)量,而h可以采用燃煤、燃油等廉價能源。采用本技術(shù)時,其脫水成本與 采用傳統(tǒng)加熱脫水技術(shù)時相比,二者基奉相當或略高。關(guān)鍵詞脫水中真空常溫1前言在多種產(chǎn)

2、品加工中,脫水工藝常是決定生產(chǎn)效率、產(chǎn)品品質(zhì)、加工成本的蘑要因素?,F(xiàn) 在,工業(yè)上通常都采用加熱蒸發(fā)的方法使物料脫水干燥。但是,傳統(tǒng)加熱脫水工藝都存在熱 傳遞速度慢,能耗大,效率低;溫度高,加熱不均勻,產(chǎn)品質(zhì)量不穩(wěn)定等難以解決的問題。同 時,傳統(tǒng)加熱蒸發(fā)脫水法雖然熱源較廉價,但往往不適于受熱易變質(zhì)的物料的脫水加工。所 以,近年來,醫(yī)藥行業(yè)為了保存一些珍貴的生物制品的活性,開發(fā)了“真空冷凍干燥”工藝與 設備。但是,真空冷凍于燥工藝復雜,設備要求高,造價昂貴,脫水速率低,耗時長,造成產(chǎn)品 加工成本居高不下,無法推廣應用于普通大宗產(chǎn)品的干燥加工。因此,針對那些加熱易變質(zhì)的普通大宗產(chǎn)品,有必要在傳統(tǒng)加熱

3、脫水工藝技術(shù)與真空冷 凍脫水工藝技術(shù)之問,尋找一個契合點,獲得種性能,價格比相對較優(yōu)越的脫水新工藝、新 設備?!爸姓婵粘乜旖菝撍夹g(shù)”即是一種兼容r傳統(tǒng)加熱脫水低成本優(yōu)勢與真空冷凍干 燥高品質(zhì)優(yōu)勢,克服f-者缺點,可以滿足多種高要求物料加工需要,性能良好,價格合理的 脫水新技術(shù)。2技術(shù)說明中真空常溫快捷脫水技術(shù),即能在中真空環(huán)境中(213kpa),常溫狀態(tài)下(2050c),較短時間(053h)內(nèi),使物料完成脫水的工藝技術(shù)。 對于加熱易變質(zhì)的大宗產(chǎn)品,采用中真空常溫快捷脫水技術(shù),即可獲得類比于真空冷凍于燥的良好品質(zhì),而且產(chǎn)品脫水效率高,加工成本僅略高于傳統(tǒng)加熱脫水成本或基本相當。 通過表1的簡

4、略對比,可以明顯看出“中真空常溫快捷脫水技術(shù)”具有較理想的性能價格比 優(yōu)勢。中真空常溫快捷脫水技術(shù)259中真窄常溫短時脫水技術(shù)的性能、價格優(yōu)勢來源于真空度的合理選擇與所用能源的合 理選擇(一般而占,采用電能脫水時,脫水成本大于0 8元kgh,o;采用燃煤作為脫水能源 叫,脫水成本小于02元k州:0)。其中,當真空度選擇在2341234kpa中真空范圍內(nèi)時, 水在2050即沸騰蒸發(fā)(水的沸點與環(huán)境氣壓的關(guān)系如表2所示)。對于絕大多數(shù)品種的 食品、農(nóng)副產(chǎn)品、藥材等等物料,在如50溫度范圍內(nèi)是不易發(fā)生熱變性的;而且由于物 料處于低氧狀態(tài)下,也杜絕了氧化變質(zhì)的發(fā)生。同時,當物料處于真空環(huán)境中時,由于物

5、料 深層分壓大于表面分壓,促使物料深層水分向表層迅速擴散,使物料的脫水速率能一直保持 在較快的恒速脫水階段,大大提高了物料的干燥效率,降低了產(chǎn)品脫水成本。表2 水的沸點與氣壓的對應值水的沸點()0 5 10 15 20253035加 對應膻(kpa)0 61 o 89 】23】70 2 343 174 24 5 627 37 水的沸點()45 5055 - - 100 對應氣壓(kpa) 9 5812 3415 74101 32為r保證物料中水分持續(xù)脫除,必須不斷為物料提供熱能,使物料溫度保持在不低于該 氣壓f水的沸點的狀態(tài)下。由于在巾真空環(huán)境中,熱對流現(xiàn)象仍十分明顯,傳熱效果好(高 真空環(huán)境

6、下無熱對流),因此中真空脫水設備對加熱裝置的要求較為寬松,多種加熱裝置均 能使用,較容易獲得設計要求溫度。中真空環(huán)境也較高真空環(huán)境容易獲得。這都為“中真空 常溫快捷脫水設備”制造難度和造價的降低奠定了良好基礎,并有利于降低脫水成本。因此,中真空常溫快捷脫水技術(shù)具有脫水效率高,產(chǎn)品質(zhì)量好,脫水成本低的優(yōu)點,確保了該技術(shù)在多個行業(yè)、多種產(chǎn)品加工中的推廣應用。3中真空常溫快捷脫水設備根據(jù)不同產(chǎn)品脫水加工需要,中真空常溫快捷脫水沒備可設計為批量式生產(chǎn)機型和連 續(xù)式生產(chǎn)機型;根據(jù)不同產(chǎn)品脫水溫度要求以及加熱裝置的不同,可構(gòu)成遠紅外中真空、微 波中真空、熱管加熱中真空常溫快捷脫水設備等等設備類型。其中,連

7、續(xù)式微波中真空常溫快捷脫水設備的技術(shù)水平屬于國際領(lǐng)先地位。該設備是 一條由多個相同的功能單元聯(lián)結(jié)構(gòu)成的生產(chǎn)線,可根據(jù)產(chǎn)品產(chǎn)量的多少進行積木式安裝,以 達到鼴合理、經(jīng)濟投資的目的。連續(xù)式微波中真空常溫快捷脫水生產(chǎn)線采用微波加熱裝置,具有多種獨特優(yōu)勢: (1)微波加熱具有選擇性,會優(yōu)先選擇加熱水分子,從而保護了物料中芳香油、天然色素260第三屆果蔬加工技術(shù)與產(chǎn)業(yè)化國際研討會論文等熱敏性成分。 (2)微波加熱具有穿透性,可對塊狀、大顆粒狀、膏狀等傳統(tǒng)加熱法難以均勻、快速加熱的物料,進行迅速、整體加熱。 (3)由于微波加熱的物料深層溫度高于表層溫度,促進了物料深層水分向表層的遷移、擴散、蒸發(fā),可使物料

8、整體脫水效率大幅度提高。(4)微波加熱的瞬時高效性,使物料內(nèi)水分迅速汽化蒸發(fā),造成物料的“微膨化”效果,能大大提高食品、農(nóng)副產(chǎn)品等干燥后的復水性、速溶性。(5)微波場傳遞是瞬間性的,因此可以精密控制微波加熱程度,并使加熱裝置極易實現(xiàn)自動化控制。(6)微波獨有的在較低溫度下的高效、廣譜殺菌功能尤其對食品、農(nóng)副產(chǎn)品而言,可以 使產(chǎn)品獲得良好的衛(wèi)生質(zhì)量。連續(xù)式微波中真空常溫快捷脫水生產(chǎn)線每個功能單元的標準設汁為:功率12kw,脫水量lokg每小時。但是,又由于微波泄漏會對人體健康造成危害,因此對微波加熱腔的加”e精度要求極 高;而且微波發(fā)生源較常規(guī)加熱源昂貴,所以微波加熱裝置的投資較高。若要降低投資

9、成本,叮以采用熱水管加熱,利用射流泵熱水的余熱,通過熱對流效應加 熱物料,也可獲得較均勻的加熱效果。4中真空常溫快捷脫水技術(shù)的應用中真空常溫快捷脫水技術(shù)在很多價值較高的食品、農(nóng)副產(chǎn)品的脫水加工中均顯示出獨 特的優(yōu)勢。若能根據(jù)不同品種物料特性,合理選擇恰當?shù)墓に?,設計、使用恰當?shù)拿撍O備 機型,將能獲得質(zhì)量、成本更令人滿意的加工效果。41在富含糖、膠質(zhì)類成分的物料脫水中的應用栗果是著名的“干果之王”,富含糖分,易被霉菌寄生而變質(zhì),故而栗果鮮果常被脫水千 制,以延長其保質(zhì)期。但栗果的高糖特性又使之不宜采用傳統(tǒng)加熱法脫水。因此,可采用連 續(xù)式遠紅外中真空常溫快捷脫水生產(chǎn)線進行栗果的脫水千制。經(jīng)脫水處

10、理4050nfin后, 栗果的含水量即降至加左右,即使產(chǎn)品保持了較好的咀嚼適口性及原有風味、色澤,也有 效延長了栗果保質(zhì)期,并使產(chǎn)品質(zhì)量達到國際市場要求標準,而每千克產(chǎn)品的脫水成本僅為060 5f:kg,為擴大栗果產(chǎn)品市場銷路,實現(xiàn)栗果更大增值創(chuàng)造了條件。連續(xù)式遠紅外(或微波)中真空常溫快捷脫水生產(chǎn)線還可以應用于綠葡萄干、桂圓干、荔枝干、原味紅薯干等高糖、多膠質(zhì)產(chǎn)品的脫水加工,使產(chǎn)品最大限度地保持固有的天然色澤和風味。42在富含易揮發(fā)、易分解、易變性等熱敏性成分的物料脫水中的應用 傳統(tǒng)生產(chǎn)速溶柑橘粉時,多采用噴霧干燥法脫水,但往往造成柑橘粉中維生素c以及風味性揮發(fā)油的損失,使產(chǎn)品風味降低。傳統(tǒng)

11、工藝為彌補這一缺陷,往往要向柑橘粉中添加 人工合成的維生素和柑橘皮揮發(fā)油提取物。若采用連續(xù)式微波中真空常溫快捷脫水技術(shù)生產(chǎn)速溶柑橘粉,不僅能使物料迅速脫水,并使產(chǎn)品產(chǎn)生微膨化、增溶效果,提高了產(chǎn)品干燥后的復水性(速溶性),更保留了產(chǎn)品固有中真空常溫快捷脫水技術(shù)261的熱敏性天然、完全風味、營養(yǎng),而且具備了良好衛(wèi)生質(zhì)量,同時脫水成本也低于傳統(tǒng)噴霧干 燥成本。若采用燃煤取代電能,采用由射流泵熱水余熱加熱的熱管取代微波加熱,不僅可以大大提高設備的脫水能力(脫水量達到lth),也使脫水成本更低。陔工藝以及設備還可用于速溶茶粉、薄荷、綠葉蔬菜、姜粉、蒜粉等產(chǎn)品的脫水干制。43在富含單寧類物質(zhì),易發(fā)生褐變

12、的物料脫水中的應用 傳統(tǒng)生產(chǎn)休閑水果脆片(山梨片、蘋果片等等)時,都是將預處理后的水果片經(jīng)冷凍干燥脫水至水果片含水量約18tj,j,再經(jīng)油炸膨化。但水果片采用冷凍干燥脫水工藝,設備投 資大,脫水效率低,成本偏高,造成產(chǎn)品價格過高,不適應市場消費要求。因此,有必要改用 中真牢常溫快捷脫水技術(shù),配合微波無水漂燙滅酶前處理工藝、微波砂燙膨化工藝生產(chǎn)休閑 水果脆片。經(jīng)全套工藝以及配套流水線處理,即可得到色澤鮮明、風味濃郁純正、口感酥脆、不含油 脂的健康綠色而且價格低廉的休閑水果脆片產(chǎn)品。中真空常溫快捷脫水技術(shù)與其他前處理、后續(xù)加工工藝配合,還可應用于多種易發(fā)生褐變的物料,例如:低糖紅薯干、淮山片、香菇

13、、原筍干等等產(chǎn)品的脫水加工。4 4在黏稠的、傳熱慢、高溫易變質(zhì)的漿狀、糊狀、粉狀物料脫水中的應用 即食米粉是喂養(yǎng)嬰幼兒的主要固體食物,也是許多病患人群、老年人群必需的重要半流質(zhì)輔助食品。國內(nèi)的米粉生產(chǎn)企業(yè)由于受到傳統(tǒng)生產(chǎn)工藝、技術(shù)以及生產(chǎn)設備的限制,只能 采用噴霧干燥技術(shù)生產(chǎn)粉狀米粉產(chǎn)品,或采用轉(zhuǎn)鼓干燥技術(shù)生產(chǎn)片狀米粉產(chǎn)品。采用這些 傳統(tǒng)工藝技術(shù)牛產(chǎn)出的米粉產(chǎn)品在質(zhì)量上遠遠無法與國外同類產(chǎn)品(例如:美國“亨氏”品 牌)卡h比。因此,要生產(chǎn)出能與國外產(chǎn)品質(zhì)量相媲美的米粉產(chǎn)品,必須改用中真空常溫快捷 脫水生產(chǎn)技術(shù)。,采用中真空常溫快捷脫水技術(shù)生產(chǎn)即食米粉產(chǎn)品時,在生產(chǎn)線設備投資僅為國外同類 生產(chǎn)線

14、投資額的10條件下,即可生產(chǎn)出與“亨氏”產(chǎn)品相同的光滑、均勻薄片狀、沖調(diào)不結(jié) 塊、食用后不“上火”、可添加多種全價蔬菜、水果等營養(yǎng)輔料的即食米粉產(chǎn)品,而產(chǎn)品價格較 “亨氏”產(chǎn)品價格降低了20以上。該工藝及生產(chǎn)線還可用于山楂片、果丹皮、紙狀果蔬片、魔芋粉、螺旋藻粉等產(chǎn)品的加:。,例如在山楂片的生產(chǎn)中,傳統(tǒng)生產(chǎn)工藝是將山楂漿涂布在玻璃板上,采用低溫烘箱緩慢 烘t的,生產(chǎn)效率極低,而且產(chǎn)品衛(wèi)生質(zhì)量差。若采用中真空常溫快捷脫水技術(shù)生產(chǎn)山楂 片,不僅產(chǎn)品品質(zhì)可以達到國際市場要求,更能提高生產(chǎn)效率lo倍以上。45在富含油脂、蛋白質(zhì)的物料脫水中的應用 禽類脂肪熔點低(約為32),生制品富含蛋白質(zhì),極易熱變性

15、或受到微生物污染而腐敗,因此傳統(tǒng)板鴨生制品的制做都選擇在秋冬季節(jié),利用自然“霜風”脫水干制。這就造成傳 統(tǒng)板鴨產(chǎn)品只能季節(jié)性加工,而且生產(chǎn)周期長,衛(wèi)生質(zhì)量差,產(chǎn)品無法異地、跨季節(jié)貯運、銷 售,制約了板鴨加工業(yè)的現(xiàn)代工業(yè)化發(fā)展。因此,應采用批量式遠紅外中真空常溫快捷脫水 工藝、設備取代傳統(tǒng)“霜風”干燥,實現(xiàn)板鴨生制品常年化、規(guī)?;?、現(xiàn)代化生產(chǎn)。經(jīng)實踐證明,板鴨經(jīng)34小時的中真空常溫脫水處理,即可達到終產(chǎn)品水分含量要求,較傳統(tǒng)霜風脫水法或熱泵脫水法等提高效率1030倍,而且每只板鴨產(chǎn)品的脫水成本僅為262 第三屆果蔬加工技術(shù)與產(chǎn)業(yè)化國際研c可會論文030元左右。批量式遠紅外(或微波)中真空常溫快捷

16、脫水設備還可以應用于生板雞、生臘肉、香腸、火腿、肉干(脯)、魚干、蝦干、各種貝類干制品(例如:牡蠣、干貝、鮑魚等)、奶酪等產(chǎn)品的脫水。46在富含活性成分的物料脫水中的應用地龍的藥效成分即為其所含的活性生物酶。該成分極不耐熱,而且生鮮地龍作為動物 蛋白體也不易貯存,因此需要采用低溫干燥法保存全地龍,以獲得最高藥用價值。但若采用 真空冷凍干燥法干燥全地龍,會使產(chǎn)品成本過高,而且產(chǎn)量較低,不能適應市場需求。所以, 可以采用批量式微波中真空常溫快捷脫水設備進行全地龍的干制。經(jīng)45小時的中真空 常溫脫水,即可獲得全地龍干品,產(chǎn)品質(zhì)量及藥理校價與真空冷凍干燥的產(chǎn)品相當,而成本 僅為真空冷凍干燥的13左右。

17、該技術(shù)、設備還可應用于人參、天麻、蛤士蟆、蜂王漿、固體蜂蜜等等珍貴藥材的脫水干制。5結(jié)語中真空常溫快捷脫水技術(shù)與其他工藝配合應用,構(gòu)成全新的生產(chǎn)技術(shù)體系,可以實現(xiàn)多 種產(chǎn)品高品質(zhì)、高效率、低成本的生產(chǎn),其應用前景是極其廠闊的。the quick drying technology at room temperature and middle vacuumchen shumengbing hou zonglong yang(jinfangzhou chinese medical herb research institute fujian province,china fuqing idngyu

18、 food co,ltd,fimhou,fujian province,china 350004)abstract in order to solve the problem that manifold product(for instance:foodstuff、agricultural pmd uc!、crude drags and so 011)could be deteriorative when it has been dried ttmoligil the tradition hnating techn ology we exploit the quick dlyig techno

19、logy at room temperature and middle vacllulll ne 1ethnology works in middle vacutml(213kpa)it could d州the pnxluo at toom temperature(2050)in 0 53 hoursand the technology could use the cheap fud likes coal、oil dc the cost cdmpa而son belween the technology and the tradition heating technology,theres no

20、 large differencekey words drying technology,middle vat2uulll,toom iu-,11lperdllfe1 introduction。lhe drying technology always decides the efficiency of processthe quality of product and the cost of production at the processin factory,the tradition heating technology has usually to dry the prod uct,b

21、ut the tradition heating technology not suit to dry the lr,nst of the product that could be detefiora中真空常溫快捷脫水技術(shù)263 tiveso the freezedrying technology was exploited,it could preserve the,vitality of the medicinalbut the freezedrying technology not suit to dried the most of the ordinary productwheref

22、ore,we exploit the quick drying technologyat r(g)nl tellperature and middle vacuum,and it has both of the low cost and the high quality at the stile timethe quick thying technology at foolll temperature and middle vacuum could drying the product atfoom temperature(2050)in middle vacuuln(213kpa)in 05

23、3 hoursfrom the table 1we celll fin(1 out the superiority of the technologythe function and price sui)eriority of the quick drying technology at rooln temperature and middle vaeulull stem from the reasonable selection of the vflcllhnl and the energy sources i)e usedwhell the vacutlnin 2 341234kpathe

24、 water wouldtianspire at 2050卟etable 2 showsthe relationof the water txfiling lwfint and the atmospheretable ithe short contrast 0f three technolo#eslechnolt蝌7rhethethe energythe changethe tem expendthe quality the cost ofnamealhemre。luire鯽 beof the wa-peratum nftime ofprxjductdryingof nlertofused t

25、er pha靶the mr dried ()working。m11pnnlat pluct(hour)(kpa) d邢ng at d叫1ngthequick 2 34heating coal、burnt liquid 如50 0 53 good 130 db,ing 12 34equipnm oilohase tot?!緃nologynt,the eld:tricitygtlsat drawsucessphasefor iddlemad nth塒lelieating air抽ctml htt31t篆墨篙箸the610elhtricity solidi”260 524(硎gshcceto ga,

26、usdhtechnologvkh嘰m豢淼簍264 第三屆果蔬加工技術(shù)與產(chǎn)業(yè)化國際研討會論文table 2 the relation 0f the wawr bomng point and the atmosphere型坐盟05101520,253035 40th8 water boiling61 0 891231702 343 17 4 245 627 37the atmosphem(kpa)0illatpr l”iling point()45 5055 1()0+rhe aunccsphete(kp“ 9 5812 3415 74+ 101 32at 2050and in the vacuu

27、m,the denaturation would not happened on that the most of the foodstuff、agricultural products、crude drags ere,and the efficiency of process would be raised,the cost of production at the process would be reducedduring the drying process,it lnusl be supplied the energy for evafn-ationin the middle vac

28、uum,the convection of the heat energy is also existentso in the system of the quick drying technology at room tempemtare and middle vaeuull,the most of the tm dition heating equipment could be usedbecause all of these,the systenl would made be easily,tlecosb of the system and the drying process woul

29、d be,educed3 the system of the technology0n the base of the different demands of the product drying prrx?ess or the heating equipment,the system of the quick drying technology at iy)om teinperature and middle vacuum can tse made many typesfor instance:wtiepowayemiddle vacuum or infraredrniddle vacuu

30、m or heating tubfmiddle vacuum drying system and so on and the technology level of the microwavemiddle vacuumdrying system leads to internationalthe microwavemiddle vacuum drying system is 811 automation line,this line is made up of some function unitswhich ale connected to boxformed tunnel and 1aid

31、 in a 1ine horizontallythe function0f the microwave is as follows:(1)during the product drying process,the nficmwave first heat on the intemal water,the ate。matie and the chmmatophom could be protected(2)the microwave call quickly heat the inner of the big size product,and prevent browning(3)the nli

32、crowave call raised the drying efficiency(4)the water would obtain huge energy of the microwavewhen the water transpired,volume expanded1d broke the long fiber of the product,foml the nmltipo,vd struetule,then the micro expremed effect,it call enhaneed the dismlution of the product(5)the microwave e

33、quipment can be antonmtie eontmlled(6)the microwave has the two functions:heat sterilization and biosterilization,it sail kill alnlost at!kind of bacterial in the pnxtuet。the design of the microwavemiddle vacuum drying system function unit:the microwave 12kw,the drying ability:10kgh1f could employ t

34、he heating tube equipment,the costs of the system and the drying process wouldbe redueed中真空常溫快捷脫水技術(shù) 2654the application of the technology(1)lhe technology apply to the product which full of pectin,saccharide,there is a shon exampie thai the drying pmcess of the chestnutlhe chestrlut full of saeehafi

35、de,arid the chestnut always dried to prolong the storage lifebut ifdrying the chestnut through the tradition heatdrying technology,that is inadvisable&)in the drying process of the chestnut,could use the quick drying technology at room temperature and middle vaetmln and the mien)wavemiddle vaeuttm d

36、ing system or the irlfhredrniddlevacuum drying systeluwilen the(hying process l口sted 4050rain,the water content of the chestnut descends to aboutud of 20for the technology,the quality of the chestnut mils to the international standardthe technology and the system couht also apply to the dry green gr

37、ape、the dry longan、the dry litchi、tbe dry sweet potato etc(2)the technology apply to the product which fldi of the component that is volatile、resolvablethere is a short example thai the drying process of the orange powderin the tradition prseess,the vitamin c and the naphtha of relish in the orange

38、powder always lost if could use the quick dding technoh)gy at room temperature and middle vacuum and the microwave middle vaeuunl drying system,the quality of the orange powder must be raised,and the cost of the product nlust be mdocedif a(h)pt tbe heating tubertlid(1le vacuum drying system and use

39、coal to dried the orange powder,the yield would be advanced(the drying ability teach to lth),mid the cost of the drying processwould be reducedthe technology and the system could ai“)apply to the tea powder、mint、greenery vegetable、garlicpower、ginger powder er:(3)the technology apply to the prtwluct

40、which full of the component that would bmwningthereis a shorl example that the drying process of the dry fruit piecein lhe tradition pmeess,the fruit piece must he dried with the freezedrying technologyand when the water content of the fruit piece descends to about up of 18,then fried the fruit piec

41、ebut the cost of the tradition prrx:ess is very costly,so its reasonable and essential that use the quick dry ing technology at room temperature and middle vaeutml and the systenl in the drying process of the fruitpiececooperate with the other process of fi3reelosum,the technology and the system cou

42、ld also apply to the prrxtuct which could browning like the dry sweet potato、the chinese yam piece、the dry bamboo shoot、the dry dawdle(4)the technology apply to the product which is sefous or mushy or farinaceousthere is a shaftexamplethat the drying process of the fstfood nutrient ground ricethe fa

43、stfood nutrient ground rice is a kind of cardinal solid food or important semifluid supplementary food foi山e b8bies、the elder and the sick266 第三屆果蔬加工技術(shù)與產(chǎn)業(yè)化國際研討會論文for thetrietion of the tradition technology and the equipment,the factories of ctlina cannot piwluce the quality of the fastfocd nutrient

44、ground rice as same as the congener product that produced by the foreign factory“yetin order lo produce the quality of the fasffood nutrient ground rice could compare beauty with the congener product that produced by the foreign factory likes the usa henze(group)co,ltd,lhe quick drying teclmology at

45、 roonl temperature and nfiddle vacullrta must be usedthe system of the quick drying technology at rooln temperature and middle vachurl for the pnmuc tion of the fastfood nutrient ground rice;its cost is just 10of the cost that the foreign factorys prm uct line and the quality of the fastfood nutrien

46、t ground rice as sanle as the foreign factorys product while 20of the cost would cut downthe technology mad the system could also apply to the dry hawthom piece、taro powder、algae powder and so onfor instance,in the tradition process of the dry hawlhom piece,the hawthom slurry he be smeared 013 the glass board,and dried thmu【gh the oventhe efficiency of the tradition process is such low,and the quality of the product

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