scholarly journals The performance of microbial flocs produced with aquaculture waste as food for Artemia

2017 ◽  
Vol 23 (6) ◽  
pp. 1440-1448 ◽  
Author(s):  
G.Z. Luo ◽  
M.L. Yao ◽  
H.X. Tan ◽  
W.H. Wu

2011 ◽  
Vol 2011 (3) ◽  
pp. 92-109
Author(s):  
Y. Azimi ◽  
D. G. Allen ◽  
B. Cairns ◽  
R. R. Farnood


2021 ◽  
Author(s):  
Elena Brei

The purpose of this study was to expand the current knowledge of the composition of extracellular polymeric substances (EPS), principally EPS proteins, and their influence on structure, stability and surface chemistry of microbial flocs in activated sludge. It was proposed that a substantial portion of EPS proteins contains glycoproteins or proteins that are strongly bound noncovalently to carbohydrates. Various buffer additives, purification and precipitation methods were employed for protein purification and several glycoprotein detection methods were utilized for glycoprotein detection in the EPS. The proteins were separated with success, with a substantial portion suggesting either a possible glycosylation or strong noncovalent interactions with carbohydrate moiety. An enzyme, oligoendopeptidase F from M3B family was tentatively identified as a major protein present. These results suggest that proteins in the activated sludge EPS may exist in a very intricate arrangement. Furthermore, the EPS peptides may get degraded by naturally present enzymes in the EPS after the protein is digested prior to mass spectrum (MS), making the identification challenging.



2020 ◽  
Vol 202 ◽  
pp. 06043
Author(s):  
Woro Kusumaningtyas Perwitasari ◽  
Fuad Muhammad ◽  
Jaffran Wasiq Hidayat

Mororejo village is a village located in a coastal area located in Kaliwungu District, Kendal Regency. Mororejo village has a population of around 4,258 people with 60% of the population working as fish farmers who use and utilize land near the sea by establishing ponds that are their daily livelihood. Silvofishery is a traditional technology aquaculture model that combines fishery business with mangrove planting, which can increase pond productivity. The purpose of this paper is to find out the silvofishery model that has been applied by coastal communities in Kendal Regency. The application of silvofishery system in Mororejo village is traditional ditch pond, with a range of 80% : 20 % mangrove. n. Types of mangrove plants planted are Rhizophora sp and Avicennia sp. Mangroves can function as shrimp aquaculture waste filters (nitrate reduction 44,5 % , ammonia 46,6% and nitrite 59,0%) and increase the productivity of shrimp culture (average growth weight 49,833 gr). Socialization and research activities about the benefits of silvofishery for communities in the Kendal regency coast have not been done much but all stakeholders already have a good perception and agreed to apply silvofishery as an alternative system for sustainable aquaculture.







2017 ◽  
Vol 120 (1-2) ◽  
pp. 309-321 ◽  
Author(s):  
C.A. White ◽  
P.D. Nichols ◽  
D.J. Ross ◽  
T. Dempster




2011 ◽  
Vol 63 (2) ◽  
pp. 262-269 ◽  
Author(s):  
H. J. Lin ◽  
W. J. Gao ◽  
K. T. Leung ◽  
B. Q. Liao

Characteristics of different fractions (small flocs vs. large flocs) of sludge flocs from a submerged anaerobic membrane bioreactor treating thermomechanical pulping (TMP) whitewater were determined using various analytic techniques, including extraction and chemical analysis of extracellular polymeric substances (EPS), particle size analyzer, and polymer chain reaction (PCR)-denaturing gradient gel electrophoresis (DGGE). The results showed that the fraction of smaller flocs contained a higher level of bound EPS and had a higher fractal dimension as compared to the fraction of larger flocs. PCR-DGGE analysis indicated that there were significant differences in microbial community between the fraction of smaller flocs and large flocs. The microbial community of the smaller flocs was similar to that of the sludge cake layers, indicating the pioneering role of the microbial community in smaller flocs in membrane fouling. These findings provide a new insight in the difference of membrane fouling potential between smaller flocs and larger flocs fraction.



Aquaculture ◽  
2021 ◽  
pp. 737295
Author(s):  
Paula Senff ◽  
Brendan Elba ◽  
Andreas Kunzmann ◽  
Lucy Gwen Gillis ◽  
Georgina Robinson


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