Degradation and bioavailability of dried alginate hydrocolloid capsules in simulated soil system

TY - JOUR

T1 - Degradation and bioavailability of dried alginate hydrocolloid capsules in simulated soil system

AU - Achmon, Yigal

AU - Dowdy, F. Ryan

AU - Simmons, Christopher W.

AU - Zohar-Perez, Cheinat

AU - Rabinovitz, Zahi

AU - Nussinovitch, Amos

N1 - Publisher Copyright: © 2019 Wiley Periodicals, Inc.

PY - 2019/11/15

Y1 - 2019/11/15

N2 - 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.

AB - 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.

KW - alginate

KW - biodegradation in soil

KW - hydrocolloid

KW - polymer degradation

KW - soil respiration

UR - http://www.scopus.com/inward/record.url?scp=85068133384&partnerID=8YFLogxK

U2 - 10.1002/app.48142

DO - 10.1002/app.48142

M3 - 文章

AN - SCOPUS:85068133384

SN - 0021-8995

VL - 136

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 43

M1 - 48142

ER -