稻米香味物质2-乙酰-1-吡咯啉的形成及其影响因素     

魏晓东  张亚东  赵凌  路凯  宋雪梅  王才林 《中国水稻科学》2022,36(2):131-138

稻米香味的形成是一个复杂而多变的生理过程,遗传和环境变化对香味的形成都具有重要影响.香味的有无主要受香味基因BADH2控制,气候条件、土壤质地和栽培措施也会直接影响稻米香味物质的合成.为进一步加快香稻培育进程,提升香稻稻米品质,本文综述了近年来国内外有关稻米香味物质形成的遗传和生理机制以及环境因素对稻米香味形成的研究进...  相似文献   

紫藤鲜花在不同开花期的头香成分   总被引：2，自引：1，他引：1  

李祖光  李建亮  曹慧  张小莎  沈德隆 《浙江林学院学报》2009,26(3):308-313

采用固相微萃取（SPME）吸附不同开花期紫藤Wisteria sinensis鲜花的头香成分,并用气相色谱-质谱法（GC-MS）定量分析紫藤鲜花的头香成分,鉴定出芳樟醇、2-壬酮、反式罗勒烯、2-十一酮、3-[4,8-二甲基-3,7-壬二烯基]-呋喃、2-十三酮、4-丙酮基环庚酮、α-蒎烯氧化物、异草蒿脑和α-金合欢烯等47种化合物;同时考察了紫藤鲜花在不同开花期头香成分的变化情况：随着紫藤花开放进程,挥发性香气成分浓度逐渐增大,盛开期达到最大,后逐渐减小。SPME-GC-MS是一种可用于分析不同开花期鲜花香气成分变化的简单可行的分析方法。  相似文献   

Genetic polymorphisms in Japanese fragrant landraces and novel fragrant allele domesticated in northern Japan     

Kenta Ootsuka  Ikuya Takahashi  Katsunori Tanaka  Tomio Itani  Hiroaki Tabuchi  Tadashi Yoshihashi  Akio Tonouchi  Ryuji Ishikawa 《Breeding Science》2014,64(2):115-124

Rice fragrance is an important characteristic for Southeast Asian consumers, and fragrant landraces from Japan were first recorded in the 17th century. Principal component analysis clearly showed that Japanese fragrant landraces were genetically different from non-Japanese fragrant landraces. Japanese fragrant landraces were composed of six clades, none of which carried the most common fragrance mutation, an 8-bp deletion in exon 7 of Badh2. Fragrant landraces comprised two major groups carrying different Badh2 mutations. One group carried a known SNP at exon13 and the other a SNP at the exon1-intron1 junction as splicing donor site. The latter was considered to be a potential splicing mutant group as a novel allele at Badh2. Heterozygosity (He) scores in the two fragrant groups were not significantly different from non-fragrant landraces and modern cultivars. However, lower He scores were found around the Badh2 locus in the two groups. The potential splicing mutant group showed a more extended haplotype than the E13 SNP group. A likely causal factor responsible for loss of function is a novel splicing mutation allele that may have been generated quite recently. The fragrance allele has dispersed as a result of out-crossing under local environmental conditions.  相似文献   

天然植物香料在肉制品中的抗氧化应用研究   总被引：1，自引：0，他引：1  

王花俊  刘利锋  袁岐山 《农产品加工．学刊》2009,(6)

天然植物香料的研究已成为目前国内外研究的热点问题。主要介绍了天然植物香料的抗氧化性及其在肉制品中的应用。  相似文献   

Volatile metabolome and transcriptome reveal fragrance release rhythm and molecular mechanisms of Rosa yangii          下载免费PDF全文

《农业科学学报》2023,22(7):2111-2125

Rose is a highly significant ornamental plant with substantial edible and medicinal value, cultivated worldwide primarily for perfume production. Recently, Rosa yangii, a new species found in northwestern Yunnan, China, has drawn attention due to its strong sweet scented flowers. In this study, the floral components of R. yangii were extracted at different flowering stages using solid phase micro extraction (SPME) and analyzed through gas chromatography–mass spectrometry (GC–MS). A total of 131 volatile organic compounds (VOCs) were detected from R. yangii, including 69 odor compounds. The production and release of floral VOCs were the highest during the initial-open stage, making it the most suitable time for harvesting as a significant number of floral components were synthesized and preserved. The analysis of the odor activity values (OAV) highlighted several key aromatic ingredients of R. yangii, such as eugenol, methyleugenol, benzeneacetaldehyde and phenylethylalcohol, heptanal, decanal, (E)-2-hexen-1-yl acetate, caryophyllene, and others. Metabolome and time-order gene co-expression networks (TO-GCN) revealed that VOCs and benzenoids/phenylpropanoids, along with associated genes, played a pivotal role in the overall floral regulatory network of R. yangii. MYB and bHLH were identified as the essential regulatory factors governing the regulation of eugenol synthase (EGS) and isoeugenol synthase (IGS), consequently influencing the sweet scent of R. yangii. The findings of this study provide a scientific foundation for enhancing fragrance through molecular breeding of ornamental plants. Furthermore, the study facilitated the development and utilization of this new plant’s essential oil material in various industries, including food storage, aromatherapy, cosmetic, and perfumery.  相似文献   

河南烟区不同烤烟品种化学成分差异分析   总被引：4，自引：0，他引：4  

景延秋  张红立  李爱芳  杨红  薛立新  金磊  王茜  李怀奇 《广西农业科学》2010,41(11):1214-1218

选取河南许昌、平顶山、洛阳、三门峡、南阳、驻马店、济源等7个产烟区C3F烟叶样品,进行不同产区不同品种烟叶化学成分差异分析,以明确各产区适栽品种及烟叶香味特征。结果表明,河南烟区烤烟的还原糖、总糖和淀粉平均含量偏高,烟碱、氯平均含量及糖碱比基本适宜,总氮、钾含量及钾氯比偏低,淀粉、氯、糖碱比、钾氯比均存在广泛变异;不同品种适种于不同地区,南阳适宜种植云烟87、云烟85、中烟201,三门峡适宜栽种中烟201、云烟87,许昌适宜栽种中烟100、NC89,洛阳适宜栽种中烟100、中烟101、NC89,平顶山适宜栽种中烟100、NC89,驻马店适宜栽种云烟87,济源适宜栽种中烟100;不同产区烟叶香味组成及含量差异较大,且分布不平衡。实际生产中,应根据烟叶中香味物质的含量特征,采取适宜的栽培技术措施,以提高烟叶质量,强化香型风格,促进地方烟草业发展。  相似文献   

壳聚糖/聚乙烯醇复合膜的研究 Ⅱ.吸附性能和透过性能   总被引：1，自引：0，他引：1  

何海斌 《福建林学院学报》1998,18(3):232-234

本文研究了ＣＳ／ＰＶＡ膜对金属离子的吸附性能和透过性能以及膜的保香性．实验结果表明：复合膜对Ｃｏ２＋、Ｎｉ２＋、Ｃｕ２＋、Ｚｎ２＋有较好的吸附性能,对Ｎａ＋、Ｋ＋、Ｍｇ２＋、Ｃａ２＋的透过性能比ＣＳ膜好．复合膜的保香性较好．  相似文献   

香型多花蝴蝶兰杂交及优良单株选育     

韦小莲  洪生标  张佳霞  曾宝珰  张秀珊  郭英铎  江秀娜  汤楷 《广东农业科学》2020,47(4):39-46

【目的】利用收集的蝴蝶兰种质资源开展香型多花蝴蝶兰的杂交选育,观察后代群体主要目标性状表现,获得符合目标性状要求的香型多花蝴蝶兰优良单株。【方法】以15个蝴蝶兰品种为亲本开展蝴蝶兰常规杂交,对杂交后代进行性状调查分析,并与亲本进行比较。【结果】配对的15个杂交组合中编号16161(PL608×PL321)和编号16162(390×PL321)两对组合成功,在2016年获得成熟蒴果,其他13对杂交组合均没有获得蒴果或成熟蒴果。亲本性状最相近的16161栽培杂交后代群体200株,平地空调催花174株,该杂交组合后代数量多、开花株多、株叶型整齐、生长势强,完全遗传了母本的香味;花朵数量均遗传母本特性,接近母本,多于父本;花色、唇色整体上为父母本花色的调和色,有深浅梯度变化;斑点分布规律同母本,未出现亲本花色之外的花色,符合基本遗传规律。部分杂交后代生长发育指标优于双亲,选育出有香味、花朵数量多、花色鲜亮、开花株形态好的优良单株6株。16162栽培杂交后代群体21株,通过平地空调催花12株,杂交后代均没有遗传亲本的香味,花朵数量多遗传自父本,未选育出香型多花优良单株。【结论】两个亲本相近的香型蝴蝶兰通过杂交,可选育出符合目标性状的香型多花蝴蝶兰优良单株。但由于蝴蝶兰香味遗传背景及机制复杂,在亲本均有香味的情况下,后代不一定能遗传亲本的香味。试验中两个香型蝴蝶兰PL608、PL321可为今后香型多花蝴蝶兰杂交选育亲本选配提供参考。  相似文献   

河南沿黄稻区粳稻种质资源香味基因筛选     

郭凯  宋宁垣  孙红正  赵全志 《河南农业大学学报》2017,51(3)

利用水稻香味基因Badh2第2外显子和第7外显子特异的分子标记筛选了河南沿黄稻区208份粳稻种质资源,从中筛选出15份含有香味基因的种质材料,其中Badh2基因第2外显子突变类型12份,第7外显子突变类型3份。在河南沿黄稻区光周期条件下,这15份种质材料的开花日期从7月下旬至9月上旬不等,全生育期115~170 d。  相似文献   

九嶷香杉精油的化学成分   总被引：1，自引：0，他引：1  

曹福祥  罗全陵  王志德  王安生  黄友华 《中南林业科技大学学报(自然科学版)》1996,(3)

采用气相色谱－质谱－计算机（ＧＣ／ＭＳＤ）联用技术．首次研究了九嶷香杉精油的化学成分，鉴定出３８种化合物．主要成分为柏木脑（ｃｅｄｒｏｌ）２４．８％，α－蒎烯（α－ｐｉｎｅｎｅ）１７．５％，柏木烯（α－ｃｅｄｒｅｎｅ）１３．２５％，γ－荜澄茄烯（γ－ｃｅｄｉｎｅｎｅ）７．５％，柠檬烯（ｌｉｍｏｎｅｎｅ）３．５５％，榄香烯（ｅｌｅｍｅｎｅ）３．２％．其次是α－檀香烯（α－ｓａｎｔａｌｅｎｅ），β－檀香醇（β－ｓａｎｔｎｌｏｌ），月桂烯酸（ｍｙｒｃｅｎｏｌ），１．８－桉叶素（１．８－ｃｉｎｅｏｌｅ）等化合物．此外，本文还报道了在杉木精油中首次发现的２１种化合物．  相似文献