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使用光光谱学监测果汁的质量参数

Kokab Sabir¹, Naveed Ahmad², Hina Ali³

¹Institute of Engineering and Applied Sciences, National Institute of Lasers and Optronics College, Nilore, Islamabad, 45650, Pakistan.

Journal of fluorescence

|July 2, 2024

概括

光光谱学通过检测水和食品染料,有效地识别了果汁造. 光谱分析根据颜料含量区分了果汁质量和纸成熟度.

科学领域:

分析化学分析化学
食品科学食品科学食品科学
频谱学是一种光谱学.

背景情况:

商业果汁容易被改,影响质量和消费者信任.
果汁成分的特征对于质量控制和真实性验证至关重要.
光谱学为分析分子组成提供了一种敏感的方法.

研究的目的:

用光光谱学来描述和区分商业果果汁.
识别关键的光谱标记物,用于检测水和食品染料等常见杂质.
评估光光谱学在质量评估和成熟度确定方面的潜力.

主要方法:

用光发射光谱学分析纯果果汁和商业果汁的样本.
多变量分析,特别是主要成分分析 (PCA),用于解释光谱数据.
已知改剂 (水,黄色食品染料) 被添加到果果粉溶液中,以模拟改.

主要成果:

光光谱揭示了与光体相对应的明显峰值,如β-胡卜素,叶绿素和tartrazine食品染色剂.
444和467纳米的光谱带与水含量相关,而580纳米表示存在食品染色剂.
叶绿素和β-胡卜素强度的变化,在未成熟的纸和添加色素或水的果汁之间进行区分.

结论:

光谱学与多变量分析相结合,提供了一种快速有效的方法来检测果汁中的造物.
特定的光谱特征可以可靠地表明存在水和食品染色剂的存在.
该技术为果汁的成分,质量和成熟度提供了宝贵的见解,有助于产品的差异化.

关键词:

叶绿素是什么意思叶绿素是什么意思光光谱学光光谱学食物颜色食物颜色食物颜色果果汁果汁果汁果果粉是一种果肉质.热处理热处理方法乙 - 胡卜素B-胡卜素

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Fluorescence and Phosphorescence: Instrumentation

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Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.