中温ダクウの内外層間のQu-aroma変化を解明する:マルチオミクスとセンサリーアプローチ
Sheng-Bing Yang1, Zhen-Ming Lu2, Han-Jun Shen1
1Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China.
International journal of food microbiology
|August 21, 2025
まとめ
この研究では,中温ダクスターターの内外層に 独特の香りプロファイルと微生物群が発見されました これらの違いを理解することは,発酵製品における複雑な Qu-aroma を制御する上で鍵となります.
科学分野:
- 食品科学と技術
- 微生物学
- バイオテクノロジー
背景:
- 固体発酵は微生物コミュニティと代謝産物に影響を及ぼし,マイクロ環境の異質性をもたらします.
- 発酵飲料に不可欠なダク・スターターには,その香りプロフィールに影響を与える空間的変化があります.
研究 の 目的:
- 中温ダク (MT-Daqu) の内層と外層の間のQu-aroma変化を調査する.
- 微生物コミュニティの違いと,アロマ揮発性有機化合物 (VOC) に関連する代謝経路を分析する.
主な方法:
- 定量的記述分析とヘッドスペース固体相マイクロ抽出ガス染色体質スペクトロメトリー (HS-SPME-GC-MS) の芳香プロファイリング
- 薄膜 (TF) -SPME-GC-O/MSで匂いを特定する
- 微生物コミュニティの分析のためのメタゲノミクスとアンプリカンシーケンス.
- VOCと代謝経路をリンクするために,代謝データベースとのクロス参照.
主要な成果:
- 独特の香りプロファイル:内層 (酸味で焼いた),外層 (粒状,木っぽい).
- 層間には43の異なるVOCを特定した.
- 6つの微生物の代謝モジュールと 37の芳香活性有機化合物を関連付けました
- 内層 (Kroppenstedtia,Thermomyces) と外層 (Lactobacillus,Saccharomycopsis) の異なる微生物属が特徴付けられており,一部の属は代謝モジュールと普遍的に関連している.
結論:
- MT-Daquの空間的異質性は,Qu-aromaの組成に大きく影響する.
- 特定の微生物群とその代謝経路は 層特有の香り特性を誘発します
- この研究は,Qu-aromaの空間的異質性とその微生物の基盤についての洞察を提供します.
関連する概念動画
Olfaction
45.1K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
The olfactory receptors are embedded in the cilia of the...
45.1K
Taste Buds and Receptors
2.8K
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
2.8K
Thermosensation
31.8K
Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
31.8K
Gustation
48.9K
Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
48.9K
Tactile and Chemical Senses
359
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
359
The Physiology of Taste
4.2K
The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the...
4.2K


