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Degradation and bioavailability of dried alginate hydrocolloid capsules in simulated soil system
Author(s) -
Achmon Yigal,
Dowdy F. Ryan,
Simmons Christopher W.,
ZoharPerez Cheinat,
Rabinovitz Zahi,
Nussinovitch Amos
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48142
Subject(s) - bioavailability , biodegradation , degradation (telecommunications) , soil water , materials science , chemistry , environmental chemistry , chemical engineering , environmental science , soil science , organic chemistry , biology , telecommunications , bioinformatics , computer science , engineering
Hydrocolloid capsules are common chemical carriers used in many types of applications in foods, biotechnology, and agriculture. Alginate microbeads and macrobeads are some of the more prevalent types of hydrocolloid capsules. Most studies to date have focused on alginate carrier applications but only a few have looked at their bioavailability after use. In this study, alginate carriers were subjected to simulated field conditions and their biodegradation in the soil was evaluated by respiration measurements, visualization, and volatile solids reduction. Using respiration rate, the degradation rate was calculated at 32 ± 3.1% (w/w) after 2 months. The visually estimated volume and volatile solids reduction gave degradation rates of 40 ± 8.6% (v/v) and 22.5 ± 2.5% (w/w), respectively. Moreover, water‐loss calculations suggested that the carriers can serve as a stand‐alone soil amendment for water retention. These findings emphasize the importance of studying hydrocolloid bioavailability in the soil and alginate carrier suitability for future applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 48142.