scholarly journals Effect of the initial pH on the performance characteristics of the deproteinization process of galactose supplemented shrimp shells by Aspergillus niger in a solid state drum bioreactor

Author(s):  
Ghaly Abdel ◽  
Mahmoud Nesreen
2020 ◽  
Vol 34 (1) ◽  
pp. 49-57
Author(s):  
Teerin Chysirichote

Valorization of banana peel (BP) through solid state fermentation (SSF) was aimed<br /> in this research. The appropriate conditions of citric acid (CA) production by SSF of<br /> Aspergillus niger were investigated. Firstly, the optimum initial pH of the BP and the<br /> aeration rate were studied by conducting SSF in a 250-mL flask and 2-L glass column,<br /> respectively. It was found that the initial pH of the BP and aeration rates affected the CA<br /> production. The results showed that the initial pH of 5.0 and 1.0 vvm aeration were appropriate for the CA production of A. niger using BP as a substrate. The problem of rising temperature during SSF was found when applying the optimum condition to the SSF<br /> in the 20-L packed bed bioreactor (PBB), which caused a decrease in the CA production<br /> compared to that of the glass column. The cooling air jacket constructed to the PBB to<br /> remove the heat during the SSF helped increase the CA production from that in the PBB.<br /> The maximum CA production in the 20-L air-jacketed PBB was 124.0±19.2 mg g–1DS.


Author(s):  
Arnaldo D. S. Júnior ◽  
Rosangela B. Garcia ◽  
Dina G. Rodrigues ◽  
Jorge Nozaki

A new method of culture is described to study the growth of Aspergillus niger on cactus pulp in the solid-state. After extraction of viscous polyelectrolytes, employed in water treatment, the pulp of Cereus peruvianus was used as a substrate for solid-state fermentation by a wild strain of A. niger . The good conditions for A. niger growth were 60 % moisture, initial pH 3.0, 35 °C, a nitrogen source made of 11 % ammonium and 2 % urea (on a nitrogen basis), 5 % potassium phosphate, and 3.2 g spores/100 g substrate. Related to the dry pulp, maximum fungal growth was observed after 120 hours of fermentation with 14 % of protein production.


2013 ◽  
Vol 781-784 ◽  
pp. 836-839
Author(s):  
Xiu Li Qin ◽  
Li Hui Zhao

In this paper, the condition of aspergillus niger and the bacillus subtilis mixing fermentation to produce soybean peptides was studied. The results indicated that the best fermentation condition of the aspergillus niger and the bacillus subtilis mixing fermentation to produce soybean peptides is that: the initial pH of the culture medium is 8.0, the proportion of mixture strains (aspergillus niger vs bacillus subtilis) is 2 to 1,the fermentation temperature is 30°C and the fermentation time is 80 hours. In this condition the degree of hydrolysis of the fermentation bean pulp is 36.5%.


2019 ◽  
pp. 1-3
Author(s):  
Madhuri B ◽  
Narasimha G ◽  
Balaji M*

Areca palm (ChrysalidoCarpus lutescenes) a widely used plant having feathery arching brands with 100 leaflets. All these plants produce much of waste in additions to greeny and nuts. This waste of spade is used for the production of various molecules that are used in industry and pharma sector. Fermentation techniques are used to generate economically important enzymes for industrial and pharmaceutical purposes. Cellulase enzyme degrades the cellulose in between β-1, 4 glucosidic link found in lignocellulosic complex which under physical treatment is slower to degrade. The present study of Aspergillus niger for cellulose production was carried in solid state (SS) and submerged (SM) fermentations for production of cellulase enzyme. Cellulase production in SSF after 72 h of fermentation was 8.02 and in SMF activity was 2.98 per ml of cultured broth at H 6 and temperature at 30°C. Both SMF and SSF were supplemented with lactose and lactobionic acid, which acted as cellulase P production inducers. The aim of the present work was to study the effect of Areca palm spade as substrate for Aspergillus niger and its cellulase production under SMF and SSF.


2021 ◽  
Vol 9 (5) ◽  
pp. 895
Author(s):  
Carlotta Alias ◽  
Daniela Bulgari ◽  
Fabjola Bilo ◽  
Laura Borgese ◽  
Alessandra Gianoncelli ◽  
...  

A low-energy paradigm was adopted for sustainable, affordable, and effective urban waste valorization. Here a new, eco-designed, solid-state fermentation process is presented to obtain some useful bio-products by recycling of different wastes. Urban food waste and scraps from trimmings were used as a substrate for the production of citric acid (CA) by solid state fermentation of Aspergillus niger NRRL 334, with a yield of 20.50 mg of CA per gram of substrate. The acid solution was used to extract metals from waste printed circuit boards (WPCBs), one of the most common electronic waste. The leaching activity of the biological solution is comparable to a commercial CA one. Sn and Fe were the most leached metals (404.09 and 67.99 mg/L, respectively), followed by Ni and Zn (4.55 and 1.92 mg/L) without any pre-treatments as usually performed. Commercial CA extracted Fe more efficiently than the organic one (123.46 vs. 67.99 mg/L); vice versa, biological organic CA recovered Ni better than commercial CA (4.55 vs. 1.54 mg/L). This is the first approach that allows the extraction of metals from WPCBs through CA produced by A. niger directly grown on waste material without any sugar supplement. This “green” process could be an alternative for the recovery of valuable metals such as Fe, Pb, and Ni from electronic waste.


2011 ◽  
Vol 165 (1) ◽  
pp. 382-395 ◽  
Author(s):  
Jaqueline Renovato ◽  
Gerardo Gutiérrez-Sánchez ◽  
Luis V. Rodríguez-Durán ◽  
Carl Bergman ◽  
Raúl Rodríguez ◽  
...  

2011 ◽  
Vol 54 (3) ◽  
pp. 559-568 ◽  
Author(s):  
Christiane Trevisan Slivinski ◽  
Alex Vinicius Lopes Machado ◽  
Jorge Iulek ◽  
Ricardo Antônio Ayub ◽  
Mareci Mendes de Almeida

BioResources ◽  
2014 ◽  
Vol 9 (4) ◽  
Author(s):  
Valesca Weingartner Montibeller ◽  
Luciana Porto de Souza Vandenberghe ◽  
Antonella Amore ◽  
Carlos Ricardo Soccol ◽  
Leila Birolo ◽  
...  

LWT ◽  
2018 ◽  
Vol 87 ◽  
pp. 241-249 ◽  
Author(s):  
Francisc Vasile Dulf ◽  
Dan Cristian Vodnar ◽  
Eva-Henrietta Dulf ◽  
Zoriţa Diaconeasa ◽  
Carmen Socaciu

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