Abstract
A novel oat-based biorefinery producing L(+)-lactic acid and various value-added coproducts (e.g., β-glucan, anti-irritant solution) is proposed. Pearling is employed for sequential separation of bran-rich fractions for the extraction of value-added coproducts. Lactic acid production is achieved via fungal fermentation of Rhizopus oryzae on pearled oat flour. Maximum lactic acid concentration (51.7 g/L) and starch conversion yield (0.68 g/g) were achieved when an oat flour concentration of 116.5 g/L was used. Oxygen transfer played a significant role with respect to lactic acid production and starch conversion yield. Rhizopus oryzae produced a range of enzymes (glucoamylase, protease, phosphatase) for the hydrolysis of cereal flour macromolecules. Enzyme production during fungal fermentation has been reported. The proposed biorefining strategy could lead to significant operating cost reduction as compared to current industrial practices for lactic acid production from pure glucose achieved by bacterial fermentations.
| Language | English |
|---|---|
| Pages | 1755-1761 |
| Number of pages | 7 |
| Journal | Journal of Agricultural and Food Chemistry |
| Volume | 55 |
| Issue number | 5 |
| Early online date | 9 Feb 2007 |
| DOIs | |
| Publication status | Published - 7 Mar 2007 |
| Externally published | Yes |
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Development of an Oat-Based Biorefinery for the Production of L(+)-Lactic Acid by Rhizopus oryzae and Various Value-Added Coproducts. / Koutinas, Apostolis A.; Malbranque, Fabien; Wang, Ruohang; Campbell, Grant M.; Webb, Colin.
In: Journal of Agricultural and Food Chemistry, Vol. 55, No. 5, 07.03.2007, p. 1755-1761.Research output: Contribution to journal › Article
TY - JOUR
T1 - Development of an Oat-Based Biorefinery for the Production of L(+)-Lactic Acid by Rhizopus oryzae and Various Value-Added Coproducts
AU - Koutinas, Apostolis A.
AU - Malbranque, Fabien
AU - Wang, Ruohang
AU - Campbell, Grant M.
AU - Webb, Colin
PY - 2007/3/7
Y1 - 2007/3/7
N2 - A novel oat-based biorefinery producing L(+)-lactic acid and various value-added coproducts (e.g., β-glucan, anti-irritant solution) is proposed. Pearling is employed for sequential separation of bran-rich fractions for the extraction of value-added coproducts. Lactic acid production is achieved via fungal fermentation of Rhizopus oryzae on pearled oat flour. Maximum lactic acid concentration (51.7 g/L) and starch conversion yield (0.68 g/g) were achieved when an oat flour concentration of 116.5 g/L was used. Oxygen transfer played a significant role with respect to lactic acid production and starch conversion yield. Rhizopus oryzae produced a range of enzymes (glucoamylase, protease, phosphatase) for the hydrolysis of cereal flour macromolecules. Enzyme production during fungal fermentation has been reported. The proposed biorefining strategy could lead to significant operating cost reduction as compared to current industrial practices for lactic acid production from pure glucose achieved by bacterial fermentations.
AB - A novel oat-based biorefinery producing L(+)-lactic acid and various value-added coproducts (e.g., β-glucan, anti-irritant solution) is proposed. Pearling is employed for sequential separation of bran-rich fractions for the extraction of value-added coproducts. Lactic acid production is achieved via fungal fermentation of Rhizopus oryzae on pearled oat flour. Maximum lactic acid concentration (51.7 g/L) and starch conversion yield (0.68 g/g) were achieved when an oat flour concentration of 116.5 g/L was used. Oxygen transfer played a significant role with respect to lactic acid production and starch conversion yield. Rhizopus oryzae produced a range of enzymes (glucoamylase, protease, phosphatase) for the hydrolysis of cereal flour macromolecules. Enzyme production during fungal fermentation has been reported. The proposed biorefining strategy could lead to significant operating cost reduction as compared to current industrial practices for lactic acid production from pure glucose achieved by bacterial fermentations.
KW - Fungal fermentation
KW - Lactic acid production
KW - Oat-based biorefinery
KW - Rhizopus oryzae
UR - http://www.scopus.com/inward/record.url?scp=33947585386&partnerID=8YFLogxK
UR - http://pubs.acs.org/journal/jafcau
U2 - 10.1021/jf0627120
DO - 10.1021/jf0627120
M3 - Article
VL - 55
SP - 1755
EP - 1761
JO - Journal of Agricultural and Food Chemistry
T2 - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
SN - 0021-8561
IS - 5
ER -