光照對水果蔬菜品質的影響
水果蔬菜一旦吸收旺盛,成長出來的產品都是最佳的,但是它們在生長的過程中是需要消耗大量的能量的,像光照、水分、溫(wen)度(du)等(deng)都(dou)是(shi)它(ta)們(men)要(yao)求(qiu)比(bi)較(jiao)嚴(yan)格(ge)的(de)條(tiao)件(jian),一(yi)旦(dan)這(zhe)些(xie)條(tiao)件(jian)發(fa)生(sheng)變(bian)化(hua)就(jiu)會(hui)直(zhi)接(jie)影(ying)響(xiang)到(dao)作(zuo)物(wu)的(de)生(sheng)長(chang),從(cong)而(er)導(dao)致(zhi)產(chan)品(pin)的(de)新(xin)鮮(xian)度(du)以(yi)及(ji)品(pin)質(zhi)。我(wo)們(men)在(zai)對(dui)其(qi)外(wai)界(jie)環(huan)境(jing)的(de)檢(jian)測(ce)時(shi)是(shi)需(xu)要(yao)使(shi)用(yong)到(dao)光照箱,這zhe樣yang我wo們men就jiu可ke以yi人ren為wei的de對dui其qi進jin行xing控kong製zhi,不bu再zai受shou到dao環huan境jing的de影ying響xiang。低di溫wen貯zhu藏zang能neng降jiang低di果guo蔬shu呼hu吸xi強qiang度du以yi及ji其qi它ta代dai謝xie活huo動dong的de程cheng度du,減jian少shao水shui分fen蒸zheng騰teng和he由you此ci引yin起qi的de萎wei蔫nian,從cong而er在zai一yi定ding時shi間jian內nei維wei持chi其qi貨huo架jia壽shou命ming。
但是,即使在冷藏條件下,一般果蔬的鮮嫩狀態也隻能維持幾天,例如,綠蘆筍在冷藏條件隻能維持3天(tian),而(er)一(yi)些(xie)葉(ye)菜(cai)類(lei)蔬(shu)菜(cai)時(shi)間(jian)則(ze)更(geng)短(duan)。果(guo)蔬(shu)在(zai)經(jing)較(jiao)長(chang)時(shi)間(jian)貯(zhu)藏(zang)後(hou),品(pin)質(zhi)會(hui)大(da)為(wei)下(xia)降(jiang)。果(guo)蔬(shu)貯(zhu)藏(zang)技(ji)術(shu)的(de)核(he)心(xin)是(shi)如(ru)何(he)使(shi)其(qi)保(bao)持(chi)緩(huan)慢(man)而(er)又(you)正(zheng)常(chang)的(de)生(sheng)理(li)代(dai)謝(xie),以(yi)減(jian)少(shao)物(wu)質(zhi)消(xiao)耗(hao),使(shi)果(guo)蔬(shu)在(zai)貯(zhu)藏(zang)後(hou)仍(reng)然(ran)具(ju)有(you)較(jiao)好(hao)的(de)品(pin)質(zhi)和(he)商(shang)品(pin)性(xing)。本(ben)研(yan)究(jiu)圍(wei)繞(rao)著(zhe)這(zhe)一(yi)核(he)心(xin),在(zai)實(shi)驗(yan)中(zhong)將(jiang)弱(ruo)光(guang)光(guang)源(yuan)引(yin)入(ru)冷(leng)藏(zang)中(zhong),使(shi)果(guo)蔬(shu)在(zai)貯(zhu)藏(zang)的(de)同(tong)時(shi)還(hai)在(zai)進(jin)行(xing)光(guang)合(he)物(wu)質(zhi)積(ji)累(lei),達(da)到(dao)既(ji)保(bao)持(chi)果(guo)蔬(shu)的(de)良(liang)好(hao)品(pin)質(zhi),又(you)能(neng)延(yan)長(chang)其(qi)貨(huo)架(jia)壽(shou)命(ming)的(de)目(mu)的(de)。
guoshuzhongkerongxingguxingwuhanliangzhuyaofanyingleguoshizhongtangsuanhanliangdebianhua,guoshuzaibulidezhuzangtiaojianxia,kerongxingguxingwuhanliangbianhuajulie。congjieguokeyikanchu,changwenduizhaoxiadelusunhemihoutaodekerongxingguxingwubianhuafuduhenda,qiejibenshangmeiyoutaidadeguilvxing;而普通冷藏下的蘆筍和獼猴桃的可溶性固形物變化幅度相比常溫下的要小;將(jiang)弱(ruo)光(guang)照(zhao)射(she)引(yin)入(ru)冷(leng)藏(zang)後(hou),將(jiang)蘆(lu)筍(sun)和(he)獼(mi)猴(hou)桃(tao)可(ke)溶(rong)性(xing)固(gu)形(xing)物(wu)的(de)變(bian)化(hua)幅(fu)度(du)進(jin)一(yi)步(bu)地(di)減(jian)小(xiao)。可(ke)見(jian)弱(ruo)光(guang)照(zhao)射(she)下(xia)有(you)利(li)於(yu)可(ke)溶(rong)性(xing)固(gu)形(xing)物(wu)的(de)保(bao)持(chi),從(cong)而(er)保(bao)證(zheng)了(le)果(guo)蔬(shu)的(de)品(pin)質(zhi)。
弱ruo光guang照zhao射she下xia的de冷leng藏zang環huan境jing對dui蘆lu筍sun的de葉ye綠lv素su保bao持chi起qi到dao比bi較jiao積ji極ji的de作zuo用yong,能neng延yan緩huan蘆lu筍sun的de葉ye綠lv素su含han量liang的de下xia降jiang。這zhe可ke能neng是shi由you於yu在zai弱ruo光guang照zhao射she時shi,與yu葉ye綠lv素su分fen解jie有you關guan的de酶mei類lei活huo性xing得de到dao不bu同tong程cheng度du的de抑yi製zhi,葉ye綠lv素su分fen解jie緩huan慢man,同tong時shi,植zhi物wu中zhong原yuan脫tuo植zhi基ji葉ye綠lv素su經jing過guo光guang照zhao後hou,合he成cheng了le葉ye綠lv素su。在zai低di溫wen下xia,酶mei促cu反fan應ying速su度du下xia降jiang,顯xian然ran會hui降jiang低di植zhi物wu的de呼hu吸xi作zuo用yong,但dan在zai弱ruo光guang照zhao射she的de冷leng藏zang的de條tiao件jian下xia,也ye降jiang低di了le植zhi物wu的de光guang合he作zuo用yong。所suo以yi采cai用yong相xiang對dui較jiao高gao的de溫wen度du,可ke以yi提ti高gao植zhi物wu的de光guang合he作zuo用yong,從cong而er可ke以yi抵di消xiao掉diao呼hu吸xi作zuo用yong的de物wu質zhi損sun耗hao。中國糧油儀器網 http://www.98fo.cn/



