Abstract
Polysaccharides and alkaloids are the most important bioactive compounds found in Dendrobium candidum. For mass production of polysaccharide and alkaloids from protocorm-like bodies (PLBs), this study optimized medium condition by investigating several factors affecting D. candidum PLB biomass and bioactive compound accumulation in bioreactors. During PLB bioreactor culture, sucrose is a suitable carbon source at an optimal concentration of 30 g l−1 for polysaccharide and alkaloid production. High production of polysaccharides and alkaloids was determined in salt strengths of 1/2×, 3/4×, and full strength of the MS medium. Phosphate and ammonium/nitrate ratio in normal half-strength MS medium had to be adjusted, and 1.8 mmol phosphate and 30 mmol of NO3 − as the sole nitrogen source were suitable. Production of bioactive compounds by PLB bioreactor culture is a feasible and efficient method, and polysaccharide and alkaloid yields can be improved by modifying the culture medium.
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Abbreviations
- BA:
-
Benzyl aminopurine
- CW:
-
Coconut water
- DW:
-
Dry weight
- FW:
-
Fresh weight
- MS:
-
Murashige and Skoog medium
- NAA:
-
α-Naphthalene acetic acid
- PLBs:
-
Protocorm-like bodies
- vvm:
-
Air volume/culture medium volume per min
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This research was supported by the National Science Foundation of China (31160079).
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Communicated by M. Capuana.
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Yang, F., Wei, NN., Gao, R. et al. Effect of several medium factors on polysaccharide and alkaloid accumulation in protocorm-like bodies of Dendrobium candidum during bioreactor culture. Acta Physiol Plant 37, 94 (2015). https://doi.org/10.1007/s11738-015-1843-6
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DOI: https://doi.org/10.1007/s11738-015-1843-6