TY - JOUR
T1 - Simultaneous production of l-lactic acid with high optical activity and a soil amendment with food waste that demonstrates plant growth promoting activity
AU - Kitpreechavanich, Vichien
AU - Hayami, Arisa
AU - Talek, Anfal
AU - Chin, Clament Fui Seung
AU - Tashiro, Yukihiro
AU - Sakai, Kenji
N1 - Funding Information:
Part of this work was financially supported by the Asian Core Program of the Japanese Society for the Promotion of Science, Strategic Funds for the Promotion of Science and Technology, and Japan Society for the Promotion of Science (JSPS) Grant-in-Aid for Scientific Research (No. 23580116, No. 26740050), by the Asian Core Program of the Japanese Society for the Promotion of Science, and by the Science and Technology Research Partnership for Sustainable Development (SATREPS) promoted by JICA and JST.
Publisher Copyright:
© 2016 The Society for Biotechnology, Japan.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - A unique method to produce highly optically-active l-lactic acid and soil amendments that promote plant growth from food waste was proposed. Three Bacillus strains Bacillus subtilis KBKU21, B. subtilis N3-9 and Bacillus coagulans T27, were used. Strain KBKU21 accumulated 36.9 g/L l-lactic acid with 95.7% optical activity and 98.2% l-lactic acid selectivity when fermented at 43°C for 84 h in a model kitchen refuse (MKR) medium. Residual precipitate fraction (anaerobically-fermented MKR (AFM) compost) analysis revealed 4.60%, 0.70% and 0.75% of nitrogen (as N), phosphorous (as P2O5), and potassium (as K2O), respectively. Additionally, the carbon to nitrogen ratio decreased from 13.3 to 10.6. AFM compost with KBKU21 promoted plant growth parameters, including leaf length, plant height and fresh weight of Brassica rapa (Komatsuna), than that by chemical fertilizers or commercial compost. The concept provides an incentive for the complete recycling of food waste, contributing towards a sustainable production system.
AB - A unique method to produce highly optically-active l-lactic acid and soil amendments that promote plant growth from food waste was proposed. Three Bacillus strains Bacillus subtilis KBKU21, B. subtilis N3-9 and Bacillus coagulans T27, were used. Strain KBKU21 accumulated 36.9 g/L l-lactic acid with 95.7% optical activity and 98.2% l-lactic acid selectivity when fermented at 43°C for 84 h in a model kitchen refuse (MKR) medium. Residual precipitate fraction (anaerobically-fermented MKR (AFM) compost) analysis revealed 4.60%, 0.70% and 0.75% of nitrogen (as N), phosphorous (as P2O5), and potassium (as K2O), respectively. Additionally, the carbon to nitrogen ratio decreased from 13.3 to 10.6. AFM compost with KBKU21 promoted plant growth parameters, including leaf length, plant height and fresh weight of Brassica rapa (Komatsuna), than that by chemical fertilizers or commercial compost. The concept provides an incentive for the complete recycling of food waste, contributing towards a sustainable production system.
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U2 - 10.1016/j.jbiosc.2015.12.017
DO - 10.1016/j.jbiosc.2015.12.017
M3 - Article
C2 - 26819060
AN - SCOPUS:85006569253
SN - 1389-1723
VL - 122
SP - 105
EP - 110
JO - Journal of Bioscience and Bioengineering
JF - Journal of Bioscience and Bioengineering
IS - 1
ER -