title: Solanum chrysotrichum hairy root cultures: characterization, scale-up and production of five antifungal saponins for human use.
abstract: The production of five antifungal saponins (SC-2 - SC-6) recently extracted from Solanum chrysotrichum leaves was performed using hairy root cultures grown in 250-mL flasks and in 2-L modified draught-tube internal-loop airlift reactors (2-L MR). In both scales, first order growth kinetics were observed, reaching specific growth rates of 0.08 and 0.12 d(-1), respectively. Root density at the end of the culture period was the same for the flasks and for the 2-L MR. In flasks the production of the most active saponin SC-2 was growth-associated, with a maximum yield of 0.04 % dry weight, while in the 2-L MR an SC-2 yield of 0.7 % dry weight was reached, representing a value six times greater than that observed for plant leaves. SC-3 was obtained from root biomasses grown in flasks, while SC-4 was recovered from biomasses at both levels under investigation. SC-5 and SC-6 were only detected in the culture medium of roots grown in 2-L MR. Solanum chrysotrichum hairy root cultures and their scale-up in reactors are feasible strategies for the production of these antifungal compounds for human use.
authors.affiliation: Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, México.
authors.forename: Luis
authors.initials: L
authors.lastname: Caspeta
authors.forename: Iris
authors.initials: I
authors.lastname: Nieto
authors.forename: Alejandro
authors.initials: A
authors.lastname: Zamilpa
authors.forename: Laura
authors.initials: L
authors.lastname: Alvarez
authors.forename: Rodolfo
authors.initials: R
authors.lastname: Quintero
authors.forename: Ma Luisa
authors.initials: ML
authors.lastname: Villarreal
mesh_terms: D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D006801:Humans; D018517:Plant Roots / Q000737:chemistry / Q000254:growth & development; D012503:Saponins / Q000096:biosynthesis* / Q000737:chemistry / Q000302:isolation & purification; D032322:Solanum / Q000737:chemistry* / Q000254:growth & development; D046509:Tissue Culture Techniques / Q000379:methods
chemical_list: D000935:Antifungal Agents; D012503:Saponins