期刊
STARCH-STARKE
卷 74, 期 11-12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/star.202200110
关键词
annealing; biodegradable starch film; heat-moisture treatment; potato starch; starch modification
资金
- UGC-SAP (DRSI), Government of India
- DST-FIST, Government of India
This study modified potato starch using hydrothermal treatment and developed biodegradable packaging films with improved film forming properties. The heat-moisture treated starch showed better solubility, swelling power, and mechanical properties compared to the annealed starch. The potato starch-based films exhibited lower solubility and water vapor permeability.
This study modified potato starches using hydrothermal treatment, i.e., annealing (ANN) and heatmoisture treatment (HMT). ANN in the ratio (1:2) of potato starch and water at 60 degrees C is performed for a day. For HMT, native starch is exposed to 110 degrees C maintained at 20% moisture content (M.C.) for 8 h. Potato bio-films (native and modified) are prepared by solution casting method using glycerol as a plasticizer. The properties of native and modified starches along with developed films are evaluated. HMT-modified starches showed lower solubility (10.5%), lower swelling power (21.2 g g(-1)), lower freeze-thaw stability, and exhibited non-Newtonian fluid behavior. Films produced from HMT starch have decreased solubility (13.57%), WVP (0.20 g mm m(-2) h(-1) kPa(-1)), and enhanced mechanical properties (7.62 MPa tensile strength, elongation of 11.36%, and seal strength 4.06 MPa) compared to annealed and native starch films. ANN starch increased the elongation (9.36%) with lower solubility (17.31%) and WVP (0.65 g mm m(-2) h(-1) kPa(-1)) of the starch films compared to the native starch. Also, the result shows that the potato starch-based films biodegraded within 15 days. The developed biodegradable packaging films could meet various packaging requirements using physically modified potato starch which has better film forming properties and is also eco-friendly.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据