Utilization of Meat and Bone Meal for Yeast Fermentation to Produce Astaxanthin
In: Fermentation, Jg. 9 (2023-07-01), Heft 7, S. 630-630
Online
academicJournal
Zugriff:
Meat and bone meal (MBM) is a product of the rendering industry, which is looking for high-value applications of rendered animal proteins (RAP). The objective of this research was to utilize MBM as a nitrogen source to produce astaxanthin (AX) by Xanthophyllomyces dendrorhous and quantify the bioavailability of MBM as a potential substitution of commercial nitrogen sources (i.e., yeast extract and peptone). To conduct yeast fermentation under the optimal glucose loading, the C/N ratio was optimized to achieve maximum AX content. MBM was hydrolyzed by using proteinase and alkaline (Ca(OH)2) for 4, 8, and 16 h with different enzyme and alkaline loadings to produce MBM hydrolysates (MBMHs). The MBMHs were directly fermented by X. dendrorhous under the optimum glucose concentration. Experimentally, the optimum medium contained 40 g/L glucose, 5 g/L peptone, and 3 g/L yeast extract, where AX content of 3.69 mg/g dry cell mass was achieved. MBMHs were used by X. dendrorhous as a nitrogen source, while fermentation with lyophilized MBMHs was generated using proteinase K. This resulted in a maximum AX content of 1.58 mg/g dry cell mass. This research exhibits the feasibility of using MBM as a nitrogen source to produce AX with X. dendrorhous.
Titel: |
Utilization of Meat and Bone Meal for Yeast Fermentation to Produce Astaxanthin
|
---|---|
Autor/in / Beteiligte Person: | Li, Sang ; Zheng, Yi |
Link: | |
Zeitschrift: | Fermentation, Jg. 9 (2023-07-01), Heft 7, S. 630-630 |
Veröffentlichung: | MDPI AG, 2023 |
Medientyp: | academicJournal |
ISSN: | 2311-5637 (print) |
DOI: | 10.3390/fermentation9070630 |
Schlagwort: |
|
Sonstiges: |
|