Biodegradation of composites based on maltodextrin and wheat B-starch in compost

0453332 - ÚMCH 2016 RIV CZ eng J - Journal Article
Růžek, L. - Růžková, M. - Koudela, M. - Bečková, L. - Bečka, D. - Kruliš, Zdeněk - Šárka, E. - Voříšek, K. - Ledvina, Š. - Šalounová, B. - Venyercsanová, J.
Biodegradation of composites based on maltodextrin and wheat B-starch in compost.
Horticultural Science. Roč. 42, č. 4 (2015), s. 209-214. ISSN 0862-867X. E-ISSN 1805-9333
R&D Projects: GA ČR GA525/09/0607
Institutional support: RVO:61389013
Keywords : biodegradable plastics * acetylated maltodextrin * lettuce
Subject RIV: JI - Composite Materials
Impact factor: 0.436, year: 2015

The study is focused on the microbial and chemical parameters of green compost in which composites based on acetylated wheat B-starch and maltodextrin (patented procedure) were biodegraded and also on the parameters of lettuce grown on this compost before and after the biodegradation. With a load of up to 1 g of composites per 1 l of compost, and with a storage period of 0, 7–14, 15–20 and 21–147 days, mixture of compost wiped off the surface both of well-preserved composites and of the immediate surroundings of their residues was evaluated. Microbial biomass, basal respiration (BR), metabolic quotient, dehydrogenase and arylsulfatase activity (ARS) and the parameters of the lettuce growth on this compost did not show any negative changes. On the contrary acetylated wheat B-starch and maltodextrin stimulated both ARS and BR. ARS showed the most rapid onset among all tests. The height of the aboveground parts of the lettuce (Lactuca sativa L. var. capitata) grown on green compost was significantly better, compared to commercial peat-based substrates.
Permanent Link: http://hdl.handle.net/11104/0254174