为研究神仙豆的营养及其风味构成,采用国标法、顶空固相微萃取(HS-SPME)和气质联用(GC-MS)等技术,对神仙豆进行了初步分析鉴定。结果表明:神仙豆的基本成分的含量和纳豆非常接近;其挥发性物质主要为9类72种,包括醇类(16种)、含氮类(8种)、酯类(2种)、醛类(14种)、烃类(18种)、酮类(4种)、酸类(3种)、酚类(4种)、醚类(3种)。此外,神仙豆的总游离氨基酸含量为4.70 mg/g,且谷氨酸含量最高,具有较强的鲜味口感。因此,神仙豆制品的风味和营养价值均较好。

Shenxian( fairy) bean is a traditional fermented soybean product especially popular in the north Anhui region. To study the nutrition and volatile components of Shenxian bean,the national standard method,head-space solid phase micro-extraction( HS-SPME) and GC-MS analysis were applied. The results indicated that the contents of basic nutrition components of Shenxian bean are very close to natto. A total of 72 compounds were identified and they were classified into nine major groups. Major classes of compounds included alcohols( 16),nitrogenous( 8),esters( 2),aldehydes( 14),hydrocarbons( 18),ketones( 4),acids( 3),phenols( 4) and ethers( 3). Furthermore,total free amino acids( FAA) of Shenxian bean reached 4. 70 mg g-1 with the highest glutamic acid concentration. In conclusion,Shenxian soybean product has a good flavor and higher nutritive values.