挥发性概况和潜在的预测器的性损失在新鲜的,整个"拉玛·福特"果
Lucimara Rogéria Antoniolli1, Elenilson Godoy Alves Filho2, Tigressa Helena Soares Rodrigues3
1Embrapa Grape and Wine, P.O. Box 130, 95701-008 Bento Gonçalves, RS, Brazil.
Food chemistry
|November 2, 2024
概括
用二氧化碳 (CO2) 或乙醇 (EtOH) 处理桃减少了缩性. 关键的挥发性有机化合物 (VOC) 如乙醇和乙与这种收缩性损失相关.
科学领域:
- 食品科学 食品科学 食品科学
- 农业化学 农业化学
- 植物生理学 植物生理学
背景情况:
- 胡桃的收缩性显著影响了消费者接受.
- 消除度对于某些红品种的商业可行性至关重要.
- 了解与收缩相关的挥发性化合物是开发有效治疗方法的关键.
研究的目的:
- 为了研究二氧化碳或乙醇蒸汽处理后"拉玛福特"的挥发性概况.
- 为了确定关键的挥发性有机化合物 (VOCs) 相关的缩性降低.
- 探索潜在的VOC标志物来预测收缩性损失.
主要方法:
- 商用成熟的"拉玛·福特"红豆被用70%的二氧化碳处理了18小时,或用1.70毫升/公斤的EtOH处理了6小时.
- 使用头部空间固相微提取 (HS-SPME) 与气色谱质谱法 (GC-MS) 相结合.
- 分析的重点是识别和量化挥发性有机化合物 (VOC).
主要成果:
- 暂时确定了34种挥发性有机化合物,其中15种首次在鱼中报告.
- 乙醇在治疗后占据了突出地位,其次是乙素,六和跨二六.
- 特定的VOC (五甲,乙烯酸乙酸,乙,乙醇) 的相对强度增加与缩性降低相关.
结论:
- 二氧化碳和EtOH蒸汽处理有效地改变了桃的挥发性.
- 特定的挥发性有机物,包括乙醇,乙素,六和跨二,与缩性去除有关.
- 甲,乙酸乙烯,乙和乙醇显示出作为"拉玛·福特"大的性损失的预测因子的潜力.
相关概念视频
Fruit Development, Structure, and Function
22.1K
Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
22.1K
Extraction: Effects of pH
446
Consider a neutral form of an amine, B, with a partition coefficient, K, in a liquid mixture containing organic and aqueous phases. The pH of the aqueous phase affects the charge on acidic and basic solutes, and the charged form is usually more soluble in the aqueous phase. Suppose the conjugate acid form of the amine is soluble only in the aqueous phase while the base form is soluble in both phases. Then the distribution coefficient, D, can be given as the ratio of amine concentration in the...
446
Acidity of Carboxylic Acids
6.8K
Carboxylic acids are the strongest organic acids. However, their acidic strength is much less than mineral acids like HCl. Carboxylic acids ionize in water and readily lose the hydroxyl proton to form a resonance-stabilized carboxylate ion.
6.8K
Acid Strength and Molecular Structure
30.8K
Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with...
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with...
30.8K
Physical Properties Affecting Solubility
22.5K
Solutions of Gases in Liquids
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
22.5K
Physical Properties of Carboxylic Acids
4.7K
Carboxylic acids with lower molecular weight exhibit a sharp and unpleasant odor. They also have higher boiling and melting points than analogous compounds, such as aldehydes, ketones, and alcohols.
4.7K


