洞燕是哪種燕窩
燕窩是雨燕(yan)科飛禽動物金絲燕(yan)種為產卵孵(fu)育(yu)小金絲燕(yan)以唾液分(fen)泌物所(suo)筑(zhu)(zhu)的窩巢(chao),根據筑(zhu)(zhu)巢(chao)的處所(suo),燕(yan)窩可以分(fen)為洞燕(yan),屋燕(yan)。
洞燕(yan)是金絲燕(yan)筑巢于亞熱(re)帶(dai)雨(yu)林(lin)自然(ran)(ran)保(bao)護區的天(tian)然(ran)(ran)巖洞中,世界(jie)上洞燕(yan)最好最集中的產地屬越南,其(qi)次是泰(tai)國,地質(zhi)學家證實,山洞是由石(shi)灰(hui)石(shi)凸起(qi)地面而形成(cheng),數千萬年(nian)(nian)前屬于海底,巖壁中富含(han)人體所(suo)需的各(ge)種天(tian)然(ran)(ran)礦物質(zhi),天(tian)然(ran)(ran)營(ying)養成(cheng)份(fen)高。洞燕(yan)每(mei)年(nian)(nian)定期(qi)開采3至4期(qi),其(qi)余時間為繁殖期(qi)。
由(you)于山洞內(nei)都在(zai)原始森林中,很少(shao)有(you)(you)污染,山洞深處不受天(tian)氣變化影響,巖壁中的礦(kuang)物(wu)質被燕(yan)窩吸收(shou)、因此洞燕(yan)顏色(se)有(you)(you)點帶金紅(hong)色(se),特(te)別是其邊角、羽毛及(ji)雜質很少(shao)、口感爽(shuang)滑、耐燉這樣(yang)的為上(shang)等洞燕(yan),可謂千金難求。
洞燕和金絲燕窩的區別
1、來源:洞(dong)燕(yan)(yan)(yan)是(shi)指金(jin)(jin)絲燕(yan)(yan)(yan)在山洞(dong)或(huo)懸崖邊筑巢形(xing)成(cheng)的(de)燕(yan)(yan)(yan)窩,因此洞(dong)燕(yan)(yan)(yan)是(shi)燕(yan)(yan)(yan)窩的(de)一種;金(jin)(jin)絲燕(yan)(yan)(yan)窩是(shi)金(jin)(jin)絲燕(yan)(yan)(yan)及多種同屬燕(yan)(yan)(yan)類用唾液與絨羽等混合凝結所筑成(cheng)的(de)巢窩。
2、外(wai)形(xing)(xing)(xing)(xing):洞燕(yan)的(de)顏色通常不均勻,呈(cheng)現(xian)桔黃(huang)色或(huo)(huo)(huo)紅(hong)色,形(xing)(xing)(xing)(xing)狀多為船(chuan)形(xing)(xing)(xing)(xing)或(huo)(huo)(huo)半月形(xing)(xing)(xing)(xing);而金(jin)絲(si)燕(yan)的(de)燕(yan)窩則呈(cheng)現(xian)象牙白(bai)或(huo)(huo)(huo)米白(bai)色,形(xing)(xing)(xing)(xing)狀多為盞形(xing)(xing)(xing)(xing)或(huo)(huo)(huo)船(chuan)形(xing)(xing)(xing)(xing)。