alexa Biochemical Composition of Chlorella Sorokiniana Grown
ISSN: 1948-5948

Journal of Microbial & Biochemical Technology
Open Access

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Research Article

Biochemical Composition of Chlorella Sorokiniana Grown in a Novel Design of Hybrid Photobioreactor

Renata Natsumi Haneda1*, Bruna Horvat Vieira2, Sérgio Rodrigues Fontes3, Geraldo Ombardi3, Carlos Aparecido Casali1 and Ana Teresa Lombardi1

1Department of Botany, Federal University of São Car los, Rodovia Washington Luis Km 235, São Carlos, São Paulo, Brazil

2Center for Water Resources and Applied Ecology, University of São Paulo, Avenida Trabalhador São-carlense 400, São Carlos, São Paulo, Brazil

3Department of Mechanical Engineering, University of São Paulo, Avenida Trabalhador São-carlense 400, São Carlos, São Paulo, Brazil

*Corresponding Author:
Renata Natsumi Haneda
Department of Botany, Federal University of São Car los
Rodovia Washington Luis Km 235, Brazil
Tel: +55 16997295570
Fax: +55 1633744827
E-mail: [email protected]

Received Date: March 06, 2015; Accepted Date: March 24, 2015; Published Date: March 31, 2015

Citation: Haneda RN, Vieira BH, Fontes SR, Ombardi G, Casali CA, et al. (2015) Biochemical Composition of Chlorella Sorokiniana Grown in a Novel Design of Hybrid Photobioreactor. J Microb Biochem Technol 7:076-082. doi: 10.4172/1948-5948.1000185

Copyright: © 2015 Sujata Sirsat A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The aim of this study was to assess the feasibility of a 180 L photobioreactor in which a submerged ultrafiltration system was used to maintain continuous nutrient inflow without biomass loss from the culture. After exponential growth, approximately 15% of the total volume was removed and replaced with a modified medium to induce algal physiological responses as a biochemical manipulation procedure. In this system, Chlorella sorokiniana was kept under healthy conditions, according to protein: carbohydrate ratio. C. sorokiniana was grown exponentially for 4 days up to 8.9x106 cells mL-1. The culture medium used for biochemical manipulation (72 h exposure) consisted of LC Oligo medium without nitrates or phosphates, and with 7x10-7 molL-1 total copper. The results confirmed the effectiveness of the submerged membrane and showed that algae exposure to a stressing medium resulted in intracellular carbohydrate increase, thus protein: carbohydrate (P:C) ratios, and affected lipid class composition. This novel photobioreactor configuration has the potential to improve microalgal yields and/or specific intracellular constituents, inasmuch as biochemical manipulation of the biomass is facilitated and the continuous system is operated without biomass loss.

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