紅景天的生長特性
首先我們需要了解的是紅景天的基本特征有什么,這樣才能對紅景天有直觀的認識,起碼不會購買到假冒的紅景天。紅景天為多年生草木或灌木植物,生長在海拔800——2500米(mi)高寒無污染地(di)帶(dai)的珍稀野(ye)生植物。高10-20厘米。根(gen)粗壯,圓(yuan)(yuan)錐形(xing),肉質,褐黃色(se),根(gen)頸(jing)部具多數(shu)(shu)須根(gen)。根(gen)莖(jing)(jing)短,粗狀(zhuang),圓(yuan)(yuan)柱形(xing),被多數(shu)(shu)覆瓦狀(zhuang)排列(lie)的鱗(lin)片狀(zhuang)的葉(xie)。從莖(jing)(jing)頂端之(zhi)葉(xie)腋抽出(chu)數(shu)(shu)條花(hua)(hua)莖(jing)(jing),花(hua)(hua)莖(jing)(jing)上(shang)下部均有(you)肉質葉(xie),葉(xie)片橢圓(yuan)(yuan)形(xing),邊緣具鋸齒(chi),先端尖銳,基(ji)部楔形(xing),幾(ji)無柄。聚傘(san)花(hua)(hua)序頂生,花(hua)(hua)紅色(se)。7-9月采收。
紅景天怎么鑒別真假
紅(hong)景天的鑒(jian)別(bie)方法(fa)很(hen)多,有性狀(zhuang)鑒(jian)別(bie)、顯微鑒(jian)別(bie)、色(se)譜鑒(jian)別(bie)和(he)分子生物技(ji)術,下(xia)面為大家(jia)介紹一(yi)下(xia)紅(hong)景天的性狀(zhuang)鑒(jian)別(bie):
紅景天(tian)是景天(tian)科(ke)多年生(sheng)草木(mu)或灌木(mu)植物,生(sheng)長(chang)在海(hai)拔800-2500米高寒無污染(ran)地帶的珍稀野生植(zhi)物(wu)。高10-20厘(li)米。已確(que)認(ren)的紅(hong)(hong)景(jing)天超(chao)過二百個(ge)品種(zhong),當中(zhong)大約二十多種(zhong)為亞(ya)洲(zhou)傳(chuan)統醫學的常用藥,例如小花紅(hong)(hong)景(jing)天、大花紅(hong)(hong)景(jing)天、薔薇紅(hong)(hong)景(jing)天、圣(sheng)地紅(hong)(hong)景(jing)天等。那(nei)么(me),哪種(zhong)紅(hong)(hong)景(jing)天最好?
在(zai)紅(hong)景天那么多品(pin)種中,生長于海拔 4300 米以上的大花紅(hong)景天(tian)是最優良的品種(zhong),其(qi)有(you)效成份紅(hong)景天(tian)苷的含量遠遠高于其(qi)它品種(zhong),自(zi)然生(sheng)長的大花紅(hong)景天(tian)需(xu)7-8年方可采用,可謂藥源中的(de)正宗極品,人們(men)習(xi)慣上將產自(zi)西(xi)藏(zang)的(de)大花紅景天(tian)稱(cheng)之為“藏(zang)域紅景天(tian)”,謂之“西(xi)藏(zang)人參”、“長生(sheng)不(bu)老(lao)草”、“仙賜(si)草”。
紅景天如何挑選
紅(hong)(hong)景天根莖一般呈(cheng)圓柱形(xing),粗(cu)短(duan),略彎曲,表皮棕色(se)(se)(se)或(huo)(huo)者褐色(se)(se)(se),粗(cu)糙有(you)褶皺,剝(bo)開外皮有(you)一層膜質(zhi)黃色(se)(se)(se)表皮且具有(you)粉(fen)紅(hong)(hong)色(se)(se)(se)花(hua)紋,斷(duan)面粉(fen)紅(hong)(hong)色(se)(se)(se)或(huo)(huo)紫紅(hong)(hong)色(se)(se)(se),有(you)一環紋,質(zhi)輕,疏松。紅(hong)(hong)景天鑒別主(zhu)(zhu)要(yao)還是看其主(zhu)(zhu)根呈(cheng)圓柱形(xing),粗(cu)短(duan),斷(duan)面橙紅(hong)(hong)色(se)(se)(se)或(huo)(huo)紫紅(hong)(hong)色(se)(se)(se),有(you)時具裂隙。氣芳香,味(wei)微苦澀,后味(wei)甜(tian)。
從(cong)外(wai)觀上來說優(you)(you)質的紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)在日(ri)光下(xia)顏(yan)色會非常的紅(hong)(hong)(hong)(hong),并且(qie)正品(pin)紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)在日(ri)光下(xia)還會越曬越紅(hong)(hong)(hong)(hong),這(zhe)個辦法是非常容易(yi)區分其他冒充產(chan)品(pin)的。優(you)(you)質紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)的質地(di)是較(jiao)軟是非常適合泡酒、泡茶用的,但(dan)是低海(hai)拔(ba)的紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)質地(di)比(bi)較(jiao)硬(ying),而且(qie)不易(yi)切(qie)片食(shi)用。高海(hai)拔(ba)的紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)因為密度低,所以重量較(jiao)輕,而海(hai)拔(ba)低的紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)會比(bi)較(jiao)重。當然也可以從(cong)氣味上簡單的判(pan)斷優(you)(you)質紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian),優(you)(you)質紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)一(yi)般(ban)香味比(bi)較(jiao)濃郁,品(pin)質一(yi)般(ban)的紅(hong)(hong)(hong)(hong)景(jing)天(tian)(tian)則比(bi)較(jiao)淡。