Table 5.
Retention index and absorption maxima for extrolites dectected in Monascus (the UV spectra of the unknown compounds are shown in the Supplementary data).
| Extrolite | Retention index | Absorption maxima (nm) | Extrolite by section |
|---|---|---|---|
| Anthraquinone X (= atrochrysone?) | 1207 | 220, 261, 282sh, 427 | Floridani |
| Anthraquinone Z | 948 | 223, 271, 298, 433 | Floridani |
| Asterric acid | 921 | 207, 220sh, 252, 317 | Floridani |
| Asterric acid derivative | 825 | 207, 220sh, 252, 317 | Floridani |
| (−)-bisdechlorogeodin | 868 | 203, 224sh, 278, 336sh | Floridani |
| Citrinadin-like | 783, 821, 830 | 200, 227sh, 246, 265sh, 325 | Floridani |
| Citrinin | 907 | 221, 242sh, 328, 415sh | Rubri |
| Curvularin | 881 | 200, 223, 270, 301 | Floridani |
| Dehydrocurvularin | 861 | 202, 225, 283, 334sh | Floridani |
| ENDI | 745 | End-absorption | Floridani |
| GULLA | 1007 | 202, 258, 286, 328, 369, 428 | Floridani |
| Indole alkaloid (= gypsetin-like) | 967 | 224, 278, 288, 295 | Floridani, Rubri |
| JOPS | 1098 | 208, 248, 275, 353 | Floridani |
| Metabolite M series | 845, 854, 865, 881, 906, 946 | 291, 242sh, 283, 318 | Floridani |
| Metabolite N series | 917, 1048 | 203, 236, 251sh, 326, 381 | Floridani |
| Metabolite O series | 905, 982, 993 | 202, 226sh, 254, 272sh, 335 | Floridani |
| Metabolite Y series | 1097 (Y1), 1273 (Y2) | 200, 228sh, 274, 375 | Floridani |
| Methyl asterrate | 934 | 200, 227sh, 246, 265sh, 325 | Floridani |
| Mevinolin | 1232 | 230sh, 240, 250sh | Rubri |
| Mevinolin, open acid form | 1121 | 230sh, 240, 250sh | Rubri |
| Monascin | 1251 | 230, 282, 397 | Rubri |
| Rubratoxin-like (Nonadrides, provisionally identified as rubratoxins) | 1033, 1066 | 215sh, 263 | Floridani |
| Orthosporin-like | 721 | 241sh, 248273, 282, 324 | Floridani |
| Physcion-like (anthraquinone W) | 1079 | 221, 250sh, 264, 282, 331, 440 | Floridani |
| PP-V | 943 | 250, 296, 420, 524 | Rubri |
| PP-R | 981 | 252, 306, 417, 524 | Rubri |
| Questin | 958 | 223, 247sh, 280, 428 | Floridani |
| Red anthraquinone series | 1316, 1326, 1387, 1412, 1422 | 227, 268, 330, 442 | Floridani |
| Rubratoxin-like | 1198 | 202, 251 | Floridani, Rubri |
| Rubropunctamine | 1417 | 218, 250, 279, 298sh, 447sh, 475, 512sh | Rubri |
| Rubropunctatin | 1252 | 218sh, 235, 279, 394475sh, 521 | Rubri |
| Secalonic acid D | 1104 | 200, 215sh, 258, 331, 388sh | Floridani |
| Shamixanthone-like | 1121 | 201, 228, 263, 301, 366 | Floridani |
| Sulochrin | 873 | 203, 224sh, 278, 324sh | Floridani |
| Xanthomonascin A | 1143 | 230, 282, 397 | Rubri |
Asterric acid, methyl asterrate and (−)-bisdechlorogeodin are all part of the geodin biosynthetic family; sh: shoulder.