Effect of Glycerol on the Physicochemical Properties of Cereal Starch Films

被引:16
作者
Aghazadeh, Mona [1 ]
Karim, Roselina [1 ]
Abdul Rahman, Russix [1 ]
Sultan, Muhammad Tauseef [1 ]
Johnson, Stuart Kenth [2 ]
Paykary, Maryam [1 ]
机构
[1] Univ Putra Malaysia, Fac Food Sci & Technol, Dept Food Technol, Serdang, Selangor, Malaysia
[2] Curtin Univ, Sch Mol & Life Sci, Curtin Hlth Innovat Res Inst, Perth, WA, Australia
关键词
edible coting; edible film; plasticizers; DSC; BARRIER PROPERTIES; EDIBLE FILMS; CHITOSAN; BEHAVIOR; FTIR;
D O I
10.17221/41/2017-CJFS
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The physical properties of corn, wheat and rice starch edible films with different level of glycerol were evaluated. Starch films exhibited an apparent endothermic peak in the range of 151-199 degrees C with corn starch film with 1.6% glycerol having a relatively lower T-o and higher T-p. X-ray diffraction spectroscopy indicated that the corn, wheat, rice starch powders had similar to 39-49% crystallinity, whereas Fourier transform infrared spectra showed peaks associated with the tightly bound water present in the rice, corn, wheat starches. Overall, glycerol addition could enhance the water vapour pressure barrier properties of the films, but their tensile strength was reduced. Corn starch films were identified as the most suitable choice for edible packaging as its thermal characteristics indicated suggested a more acceptable sealability. Rice starch films is proposed as the better choice for coating as it showed better flexibility as indicted by lower tensile and higher elongation properties.
引用
收藏
页码:403 / 409
页数:7
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