scholarly journals Potential Use of Rum Distillery Slops as Animal Feed Supplement. III. Effect of pH, Composition and Dilution in Mold Growth and BOD Reduction of Slops.

1969 ◽  
Vol 64 (2) ◽  
pp. 138-147
Author(s):  
Isabel M. González ◽  
Nivia F. Murphy

The growth of different strains of Aspergilli used in this study was affected by changes in the pH of the slops. Best results were obtained at pH 4.8 or higher. The slops from two distilleries differed in composition, but this did not affect mold growth and did not alter consequent reductions of BOD and total sugars in the treated product. BOD reductions in diluted slops were higher (75%) than in undiluted slops (56%), increasing with slops dilution. Best results were obtained with a slops water dilution of 1:2.

1969 ◽  
Vol 63 (3) ◽  
pp. 325-329
Author(s):  
Isabel M. González ◽  
Nivia F. Murphy

Consideration of the nutritional value of slops suggested its use as growth media for the production of fodder molds. Rum distillery slops supported better mold growth than the medium recommended for its growth. Best results were obtained with strain Aspergillus phoenicis isolated from contaminated slops in our laboratory.


1969 ◽  
Vol 64 (2) ◽  
pp. 148-163
Author(s):  
Mario Ramírez ◽  
Isabel M. González

Experiments on fodder yeast growth in rum distillery slops showed best results in slops with added nutrients, 0.15% N as (NH4)2SO4 and 0.10% P as KH2PO4. More than 60% BOD reduction was obtained with a 24-h growth. Average yeast yield obtained was 10 g/L of dried yeast with a 32-40% protein content. The 1:1 slops-water dilution gave the best results.


1969 ◽  
Vol 63 (3) ◽  
pp. 330-335
Author(s):  
Isabel M. González ◽  
Nivia F. Murphy

Rum distillery slops proved to be a valuable medium for the growth of molds rich in mycelial protein. High reductions of BOD and total sugar content of the medium were obtained. The nitrogen content of recovered slops decreased as mycelial yield increased, indicating that the mold utilizes nitrogen for its growth. Increases in the pH of the slops were observed in all growth experiments conducted. Two mold strains compared favorably with the control mold strain in comparative mold screening tests among 12 strains investigated. Variations in protein content of mycelia were observed among the different strains studied. BOD reductions of slops were found proportional to mycelial yields, 30-53% after eight days' growth with the best strains tested.


1996 ◽  
Vol 8 (4-5) ◽  
pp. 303-311 ◽  
Author(s):  
Amha Belay ◽  
Toshimitsu Kato ◽  
Yoshimichi Ota

2017 ◽  
Vol 26 (3) ◽  
pp. 115
Author(s):  
Eny Martindah ◽  
Sjamsul Bahri

Mycotoxins contamination in animal feed is harmful to livestock and leads to residues, such as aflatoxin and its metabolites (aflatoxin M1, aflatoxicol, aflatoxin Q1 and aflatoxin P1) which are deposited in meat, milk, and eggs. The existence of mycotoxins has been widespread; and mycotoxin is the most important contaminant in the food chain because it has implications for human health. Mold growth and mycotoxin production mainly depend on the weather, such as warm temperatures (28-31°C) and high humidity (60-90%). Some types of mold can produce more than one type of mycotoxin and some mycotoxins can be produced by more than one species of fungi. Mycotoxins, especially aflatoxin, fumonisin, zearalenone, ochratoxin, deoxynivalenol, and T2 toxin present in feed and feedstuffs that have to be controlled. Mycotoxins are not only harmful to the health of consumers, but will also reduce the quality of the product that is contaminated, and cause economic losses. The risk of mycotoxin contamination in animal feed could be reduced by inhibiting the mould growth and toxin production, through crop rotation, using proper fungicides, and applying regulation of mycotoxins maximum limit in feed and food in order to prevent any danger to public health.


Biotechnology ◽  
2019 ◽  
pp. 1086-1108
Author(s):  
Saritha Vara

The most abundant aromatic biopolymer on earth Lignin is extremely recalcitrant to degradation. It creates a barrier to solutions or enzymes by linking to both hemicellulose and cellulose preventing the penetration of lignocellulolytic enzymes into the interior lignocellulosic structure. Global attention has been gained by fungi owing to the potential use of their versatile enzymes for agriculture, medicines, industries and bioremediation. The combination of extracellular ligninolytic enzymes, mediators, organic acids and accessory enzymes make some of the basidiomycete white-rot fungi to be able to degrade lignin efficiently. This review describes remediation of lignocelluloses by fungi, properties of fungi, their spatial distribution and the mechanisms of action which render them attractive candidates in biotechnological applications like biopulping, animal feed, genetic engineering and space exploration.


2019 ◽  
Vol 52 (1) ◽  
pp. 115-121 ◽  
Author(s):  
Lan Mu ◽  
Ming Cai ◽  
Zongli Wang ◽  
Jianyong Liu ◽  
Tianliang Liu ◽  
...  

1990 ◽  
Vol 53 (3) ◽  
pp. 230-236 ◽  
Author(s):  
ANJANI KARUNARATNE ◽  
ELENORA WEZENBERG ◽  
LLOYD B. BULLERMAN

The effect of three individual species of lactobacilli (Lactobacillus acidophilus, L. bulgaricus, and L. plantarum) and a commercial silage inoculant, containing three different strains of the same species, on growth and aflatoxin production of A. flavus subsp. parasiticus NRRL 2999 was determined. The study was done in three substrates; a liquid semi-synthetic broth, rice, and corn. The effect of the growing cell masses of the lactobacilli as well as the effect of metabolic products contained in cell free filtrates were determined in the liquid medium. The cells were effective in preventing growth of the mold, and bacterial metabolites were effective in reducing the amount of aflatoxin produced, although growth was not affected. The prevention of growth that was observed was determined to be relative to a pH effect and microbial competition; however, the lower levels of aflatoxin obtained in the presence of cell free supernatant culture fluids could not be explained on the basis of pH or competition. Mold growth was not affected by the presence of the silage inoculant on the rice and corn. However, increased levels of aflatoxin B1 were observed in the presence of the silage inoculant on rice, and decreased levels of aflatoxin G1 were observed on the presence of the silage inoculant on corn.


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