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| Preparation Procedures of Edible Sodium Alginate Film |
| YUAN Rui,CONG Haihua,WANG Qiukuan,HE Yunhai,SONG Yuefan,REN Dandan,LIANG Wenwen |
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Abstract This paper is mainly concerned about processing conditions and the properties of the edible sodi‐um alginate film wich was prepared by sodium alginate (SA) and hydroxypropyl methyl cellulose (HPMC) as raw materials by procedures of dissolving ,mixing ,degassing ,pouring ,calcifying and drying .The tech‐nology was optimized by regulation of SA/HPMC ratio ,dissolving temperature ,CaCl2 concentration ,cal‐cification time ,SA concentration and HPMC concentration in the orthogonal experiment .The findings in‐dicated that the 10 mg/mL of SA and 50 mg/mL of HPMC were dissolved respectively and formed as gel solutions .The two gel solutions were mixed based on the mass ratio of 1∶1 and then formed film by spreading the mixed gel on the plain container .The results showed that the formed film was calcified by 10 mg/mL of CaCl2 for 10 min .The calcified edible film was analyzed to have thickness of 0 .14 mm ,a tensile strength of 2 .97 MPa ,light transmittance of 64 .09% ,and drying weight loss of 9 .97% .The artificial gastric juice disintegration time was found to be more than 24 h and artificial intestinal disintegration of 2 .07 h .This relatively simple process has good film‐forming ,laid the foundation of theory and practice for further research about process of plant‐derived hard capsule with sodium alginate .
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Received: 25 June 2016
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