pH敏感型智能包装薄膜的制备及其理化特性研究

于鑫淼; 王琼琼; 王平; 白冰瑶; 张丽; 张斌; 潘磊庆; 宋丽军

doi:10.12187/2022.03.004

June 2022

Article Contents

YU Xinmiao, WANG Qiongqiong, WANG Ping, et al. Preparation and physicochemical properties of pH-sensitivity intelligent packaging films[J]. Journal of Light Industry, 2022, 37(3): 26-35. doi: 10.12187/2022.03.004

Citation: YU Xinmiao, WANG Qiongqiong, WANG Ping, et al. Preparation and physicochemical properties of pH-sensitivity intelligent packaging films[J]. Journal of Light Industry, 2022, 37(3): 26-35. doi: 10.12187/2022.03.004 shu

Preparation and physicochemical properties of pH-sensitivity intelligent packaging films

1. College of Life Sciences, Tarim University, Tarim University, Alar 843300, China;
2. College of Food and Bioengineering, Bengbu University, Bengbu 233030, China;
3. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China

Received Date: 2021-10-10
Accepted Date: 2022-04-06

Abstract

With mulberries, purple perilla, grape skins and roses as raw materials, plant pigments were extracted by ultrasonic assisted alcohol extraction and flow-casting drying successively, and pH-sensitive intelligent indicator films were prepared. Their physical and chemical properties, antioxidant activity and intelligent indicator effect on the freshness of mutton were studied. The results showed that the physical and chemical properties and antioxidant activity of the films loaded with different pigments were significantly different. Among them, the film loaded with mulberry pigment (PVA-CS-MMP) and the film loaded with grape skin pigment (PVA-CS-GPP) had stronger applicability and higher structural stability.The tensile strength of PVA-CS-PLP and the elongation at break of PVA-CS-MMP were 21.18 MPa and 243.83% respectively. PVA-CS-PLP has low water content and water solubility, 19.30% and 20.10% respectively. PVA-CS-GPP and PVA-CS-PLP are sensitive to pH. PVA-CS-GPP and the film loaded with rose pigment (PVA-CS-RFP) had strong antioxidant capacity, the DPPH clearance rates were 89.67% and 89.02% respectively. PVA-CS-GPP was the best intelligent indicator for freshness of mutton and had a good application prospect.
- plant pigments,
- intelligent packaging film,
- pH-sensitivity,
- physicochemical property
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Preparation and physicochemical properties of pH-sensitivity intelligent packaging films

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