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Articles; Pharmaceutical Biotechnology

Improvement of hypocrellin production by a new fungal source and optimization of cultivation conditions

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Pages 819-826 | Received 17 Sep 2015, Accepted 11 Apr 2016, Published online: 05 May 2016

Figures & data

Table 1. Taxon designation of Shiraia species from Moso bamboo seeds based on sequence data from the internal transcribed spacer regions of nuclear ribosomal DNA (ITS rDNA).

Table 2. Orthogonal design of culture medium optimization.

Figure 1. (a) Colour reaction of the pigments produced by Shiraia sp.: (1) pigment acetone extract with FeCl3 solution (1 mol/L, 0.1 mL); (2) pigment acetone extract with hydrochloric acid solution (1 mol/L, 0.1 mL); (3) pigment acetone extract with sodium hydroxide solution (1 mol/L, 0.1 mL). (b) UV–vis absorbing spectrum of the main pigment components: (1) standard hypocrellin A; (2) hypocrellins produced by Shiraia sp. 816. (c) HPLC chromatograms of authentic compound hypocrellin A: (1) standard hypocrellins (HA, hypocrellin A; HB, hypocrellin B); (2) cell extracts of Shiraria sp. 816.

Figure 1. (a) Colour reaction of the pigments produced by Shiraia sp.: (1) pigment acetone extract with FeCl3 solution (1 mol/L, 0.1 mL); (2) pigment acetone extract with hydrochloric acid solution (1 mol/L, 0.1 mL); (3) pigment acetone extract with sodium hydroxide solution (1 mol/L, 0.1 mL). (b) UV–vis absorbing spectrum of the main pigment components: (1) standard hypocrellin A; (2) hypocrellins produced by Shiraia sp. 816. (c) HPLC chromatograms of authentic compound hypocrellin A: (1) standard hypocrellins (HA, hypocrellin A; HB, hypocrellin B); (2) cell extracts of Shiraria sp. 816.

Table 3. Hypocrellin A produced by Shiraia species from Moso bamboo seeds under submerged fermentation.

Figure 2. Effects of various parameters from cultivation condition on hypocrellin A production within the single-factor experiments. DCW (♦), hypocrellin A (▪). Data are shown as mean ± SD (n = 3).

Figure 2. Effects of various parameters from cultivation condition on hypocrellin A production within the single-factor experiments. DCW (♦), hypocrellin A (▪). Data are shown as mean ± SD (n = 3).

Figure 3. Effect of different carbon sources (a), organic nitrogen sources (b), inorganic nitrogen sources (c) and inorganic salts (d) on DCW (■) and hypocrellin A content (░). Data are shown as mean ± SD (n = 3). Statistical analysis of the data was performed with SSPS 18.0 using Student–Newman–Keuls test for determining significant difference (p < 0.05).

Figure 3. Effect of different carbon sources (a), organic nitrogen sources (b), inorganic nitrogen sources (c) and inorganic salts (d) on DCW (■) and hypocrellin A content (░). Data are shown as mean ± SD (n = 3). Statistical analysis of the data was performed with SSPS 18.0 using Student–Newman–Keuls test for determining significant difference (p < 0.05).

Table 4. Results of orthogonal for culture medium optimization.