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Development of sago (Metroxylon sagu)‐based colorimetric indicator incorporated with butterfly pea (Clitoria ternatea) anthocyanin for intelligent food packaging
Journal of Food Safety ( IF 2.4 ) Pub Date : 2020-04-22 , DOI: 10.1111/jfs.12807
Afiqah Nabihah Ahmad 1 , Syazana Abdullah Lim 1 , Namasivayam Navaranjan 1
Affiliation  

Innovation in colorimetric sensors to detect early signs of food spoilage is a growing interest in food safety and quality control. Currently available chemical dyes for sensor applications have concern because of their possible migration into food packaging and food in contact. In this study, a colorimetric indicator was developed using natural butterfly pea (Clitoria ternatea) anthocyanin with Sago (Metroxylon sagu) as polymeric film. The principle was based on pH shift due to chemical processes produced by microorganism causing anthocyanin color to change. The film was fabricated by solvent casting method and characterized by color change at different pH values, total water solubility, swelling rate, and morphological structure. Trials on chicken breast samples in various conditions exhibited that the film indicator responded well according to pH variation enabling a real‐time monitoring due to spoilage. Thus, our natural pH indicator with visible color variation allows for simple, economic and safe monitoring of perishable foods.

中文翻译:

开发基于西米(Metroxylon sagu)的比色指示剂并结合蝴蝶豌豆(Clitoria ternatea)花青素用于智能食品包装

用于检测食品变质早期迹象的比色传感器的创新,对食品安全和质量控制的兴趣日益浓厚。由于传感器可能迁移到食品包装和接触食品中,因此目前可用于传感器的化学染料备受关注。在这项研究中,使用天然蝴蝶豌豆(Clitoria ternatea)花色苷与西米(Metroxylon sagu)开发了比色指示剂)作为聚合物薄膜。该原理基于由于微生物引起花色苷颜色改变而产生的化学过程而引起的pH值变化。该膜是通过溶剂流延法制备的,其特征在于在不同pH值,总水溶性,溶胀率和形态结构下的颜色变化。在各种条件下对鸡胸肉样品进行的试验显示,薄膜指示剂根据pH值变化响应良好,能够实时监测变质情况。因此,我们的自然pH指示器具有明显的颜色变化,可对易腐烂食品进行简单,经济和安全的监控。
更新日期:2020-04-22
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