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埃及传统奶酪特征风味成分与微生物群落组成研究
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作者 王三 李青杨 +5 位作者 阚建全 SINGAB Abdel AWAD Sameh IBRAHIM Amel 石慧 杜木英 《食品工业科技》 2026年第7期10-21,共12页
埃及传统奶酪历史悠久,在当地饮食文化中占据重要地位。然而,目前关于埃及传统奶酪的风味物质组成、微生物群落结构以及二者之间的相关性仍缺乏系统研究。为确保其品质稳定性,本研究通过测定Mish和Karish奶酪的理化性质、有机酸及游离... 埃及传统奶酪历史悠久,在当地饮食文化中占据重要地位。然而,目前关于埃及传统奶酪的风味物质组成、微生物群落结构以及二者之间的相关性仍缺乏系统研究。为确保其品质稳定性,本研究通过测定Mish和Karish奶酪的理化性质、有机酸及游离氨基酸含量,并结合顶空固相微萃取-气相色谱-质谱联用技术与高通量测序技术,系统分析了两类奶酪的风味特征及微生物群落组成。结果表明,两类奶酪均为高蛋白、低脂肪的软奶酪。奶酪中含8种有机酸,以乳酸(70.54%)为主;另含16种游离氨基酸,其中必需氨基酸占比60.51%。通过挥发性成分分析,共检出86种挥发性成分,有29种被确定为关键香气物质(OAV≥1),其中2-壬醇、辛酸乙酯、癸酸乙酯和己酸乙酯为各样品所共有,构成埃及传统奶酪的香气基础。高通量测序结果显示,奶酪的细菌群落主要由乳杆菌属和链球菌属等构成。真菌群落则由柯达酵母属、双足囊菌属、有孢圆酵母属和梅奇酵母属等构成,其中有孢圆酵母属在Karish奶酪中丰度较高。Spearman相关性分析显示,魏斯氏菌属和柯达酵母属与奶酪风味发展关联密切,与多种氨基酸、有机酸及挥发性物质呈正相关,而与2-十二醇,2-庚醇、乙酸异戊酯及乙酸乙酯呈负相关。此外,链球菌属、乳球菌属、假丝酵母属,以及克鲁维酵母属等同样对奶酪风味发展有显著贡献,参与合成酒石酸及部分乙酯类物质。这些发现为微生物驱动的风味形成机制提供了新的见解,并为工业发酵剂的筛选和埃及传统奶酪的风味调控提供了理论依据。 展开更多
关键词 Mish 奶酪 karish 奶酪 挥发性成分 微生物群落组成 Spearman 相关性
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Ameliorating characteristics of magnetically sensitive TPU nanofibers-based food packaging film for long-life cheese preservation
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作者 Lamiaa I.El-Nawasany Ahmad Sundookh +6 位作者 Lamiaa A.Kadoum Mona A.Yasin Huda S.AlSalem Mona S.Binkadem Soha T.Al-Goul Nahla S.Zidan Kamel R.Shoueir 《Food Bioscience》 SCIE 2023年第3期1320-1331,共12页
The current study presents magnetic nanoparticles(MNPs)dispersed polyurethane(PU)nanofiber nanocoating with exceptional magnetic,thermal,hydrophobicity,and textural properties.X-ray photoelectron spectroscopy(XPS)was ... The current study presents magnetic nanoparticles(MNPs)dispersed polyurethane(PU)nanofiber nanocoating with exceptional magnetic,thermal,hydrophobicity,and textural properties.X-ray photoelectron spectroscopy(XPS)was used to clarify the Fe3O4 MNPs synthesis,which had previously been accomplished using a single-step green method using molasses as a biowaste.The MNPs particles were then encapsulated in PU nanofibers with varying concentrations of 0.1,0.3,and 0.5 wt%.SEM revealed a homogenous,smooth,and consistent fiber morphology with a diameter of 173.61(size,nm),and the diameter rises with the addition of MNPs.With statistical significance(P<0.05),PU/MNPs nanofiber showed intense antibacterial activity against different microbes.Notably,PU/0.5 wt%MNPs exhibit advantages as antimicrobial packaging materials by maintaining the quality and freshness of the Karish cheese and extending its shelf life to 40 days while also boosting its gumminess(5.9,N),hardness(7.93,N),cohesiveness(0.6),and adhesiveness(1.14,mg).Iron content is quantified using inductively coupled plasma mass spectrometry(ICP-MS)to determine whether the developed materials are safe for food.These findings showed that PU/MNPs could be a valid alternative for controlling Karish cheese storage.Further research into the effectiveness of this method with various smear cheeses is possible. 展开更多
关键词 PU nanofibers Magnetic nanoparticles Active food packing Microbiological investigation Texture profile analysis of karish cheese
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