Influence of organic by-products and nitrogen source on chemical and microbiological status of an agricultural soil

1997 ◽  
Vol 24 (2) ◽  
pp. 196-204 ◽  
Author(s):  
J. A. Entry ◽  
B. H. Wood ◽  
J. H. Edwards ◽  
C. W. Wood
Keyword(s):  
Nitrogen Source ◽  
Agricultural Soil ◽  
By Products ◽  
Microbiological Status

scholarly journals Ammonia-oxidizing bacteria are more responsive than archaea to nitrogen source in an agricultural soil

2016 ◽  
Vol 96 ◽  
pp. 4-15 ◽  
Author(s):  
Yang Ouyang ◽  
Jeanette M. Norton ◽  
John M. Stark ◽  
Jennifer R. Reeve ◽  
Mussie Y. Habteselassie
Keyword(s):  
Nitrogen Source ◽  
Agricultural Soil ◽  
Ammonia Oxidizing Bacteria

scholarly journals Optimization of Lactic Acid Production from Pineapple By-Products and an Inexpensive Nitrogen Source Using Lactiplantibacillus plantarum strain 4O8

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Joel Romial Ngouénam ◽  
Pierre Marie Kaktcham ◽  
Chancel Hector Momo Kenfack ◽  
Edith Marius Foko Kouam ◽  
François Zambou Ngoufack
Keyword(s):  
Lactic Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Acid Production ◽  
Lactic Acid Production ◽  
Nitrogen Sources ◽  
Production Medium ◽  
Optimum Conditions ◽  
Pharmaceutical Industries ◽  
By Products

Lactic acid (LA) is used in food, cosmetic, chemical, and pharmaceutical industries and has recently attracted much attention in the production of biodegradable polymers. The expensive substances including carbon and nitrogen sources involved in its fermentative synthesis and the increasing market demand of LA have prompted scientists to look for inexpensive raw materials from which it can be produced. This research was aimed at determining the optimum conditions of lactic acid (LA) production from pineapple by-products and an inexpensive nitrogen source using Lactiplantibacillus plantarum strain 4O8. After collection and preparation of the carbon source (pineapple by-products) and nitrogen sources (by-products from fish, chicken, and beer brewing industries), they were used for the formulation of 4 different media in terms of nitrogen sources. Then, the proximate compositions of promising nitrogen sources were determined. This was followed by the screening of factors (temperature, carbon source, nitrogen source, MgSO4, MnSO4, FeSO4, KH2PO4, and KHPO4) influencing the production of LA using the definitive plan. Lastly, the optimization process was done using the central composite design. The highest LA productions ( 14.64 ± 0.05   g / l and 13.4 ± 0.02   g / l ) were obtained in production medium supplemented with chicken and fish by-products, respectively, making them the most promising sources of nitrogen. The proximate analysis of these nitrogen sources revealed that their protein contents were 83.00 ± 1.41 % DM and 74.00 ± 1.41 % DM for chicken by-products and fish by-products, respectively. Concerning the screening of factors, temperature, nitrogen source, and carbon source were the factors that showed a major impact on LA production in the production medium containing chicken by-products as nitrogen source. A pineapple by-product concentration of 141.75 g/l, a nitrogen source volume of 108.99 ml/l, and a temperature of 30.89°C were recorded as the optimum conditions for LA production. The optimization led to a 2.73-fold increase in LA production when compared with the production medium without nitrogen source. According to these results, chicken by-products are a promising and an inexpensive nitrogen source that can be an alternative to yeast extract in lactic acid production.

Optimisation of Tetrahymena rostrata growth using food by-products as nitrogen source

1998 ◽  
Vol 12 (2) ◽  
pp. 177-181 ◽  
Author(s):  
P. Caillieret-Ethuin ◽  
F. Duyme ◽  
F. Tonon ◽  
J. Jeanfils ◽  
J. De Coninck
Keyword(s):  
Nitrogen Source ◽  
By Products

scholarly journals Cunninghamella bertholletiae’s Toxins from Decomposing Cassava: Mitigation Strategy for Toxin Reduction Using Nepenthes mirabilis ‘Monkey Cup’ Digestive Fluids

2021 ◽  
Author(s):  
Elie Fereche Itoba-Tombo ◽  
Seteno Karabo Obed Ntwampe ◽  
John Baptist Nzukizi Mudumbi ◽  
Lukhanyo Mekuto ◽  
Enoch Akinbiyi Akinpelu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Secondary Metabolites ◽  
Agricultural Soil ◽  
Fermentation Broth ◽  
Fumonisin B1 ◽  
Mitigation Strategy ◽  
Liquid Chromatography Mass Spectrometry ◽  
Natural Plant ◽  
By Products

A fermentation technique was utilised to assess a fungus, i.e. Cunninghamella bertholletiae/polymorpha, isolated from rotting cassava, ability to produce mycotoxins and resultant oxidation by-products of the mycotoxins using liquid chromatography–mass spectrometry (LC/MS). Thus, the mycotoxins/secondary metabolites, fumonisin B1 (FB1) and deoxynivalenol (DON) were produced while, heptadecanone, octadecanamide, octadecenal and 3-keto-deoxynivalenol (DON) were successfully identified as biodegradation by-products in the fermentation broth treated with hydrolysing ‘monkey cup’ juice from Nepenthes mirabilis. Exposure to the mycotoxins and the biodegradation by-products through consumption of contaminated produce including contact due to the cumulative presence in arable agricultural soil can be harmful to humans and animals. Therefore, this work reports on a strategy for the mitigation and reduction of mycotoxins in agricultural soil using natural plant pitcher juices from N. mirabilis’ ‘monkey cup’.

The formation kinetics of haloacetonitriles and halonitromethanes during chloramination

2014 ◽  
Vol 14 (4) ◽  
pp. 540-546 ◽  
Author(s):  
Yi-Hsueh Chuang ◽  
Hsin-hsin Tung
Keyword(s):  
Nitrogen Source ◽  
Organic Nitrogen ◽  
Nitrogen Sources ◽  
Product Formation ◽  
Precursor Pool ◽  
Formation Kinetics ◽  
Dissolved Organic Matters ◽  
Xad Resins ◽  
Kinetics Of ◽  
By Products

This study investigates the formation of 14N- and 15N-nitrogenous disinfection by-product formation upon 15N-chloramination from four dissolved organic matters (DOMs). A series of XAD resins were used to fractionate DOM based on their hydrophobicity and functional group. The results show that hydrophobic acid (HPOA) fraction was the most important precursor pool for haloacetonitrile (HAN); these precursors mainly generated HAN through chloramine incorporation. HPOA and hydrophobic neutral (HPON) gave higher trichloronitromethane (TCNM) yields than the other fractions did. The nitrogen origin upon chloramination of HPOA was primarily from dissolved organic nitrogen (DON). By contrast, chloramines provided the main nitrogen sources during chloraminating HPON and HPOA with low DON to dissolved organic carbon ratios. The results of formation kinetics show that dichloroacetonitrile (DCAN) of which nitrogen source originate from DON formed faster than that of which nitrogen source originate from chloramines. Under normal chloramine exposure (4,000 mg-min/L, equal to 2 mg/L chloramines with around 2 days' reaction duration), 14N-DCAN concentration was two to over five times higher than that of 15N-DCAN. This study also uses a model to calculate the formation concentration of nitrogenous disinfection by-products without hydrolysis effects. The results show that 15N-DCAN formation was linearly correlated with chloramine exposure.

Using Tobacco By‐products as a Nitrogen Source for Container‐Grown Houseplants

2003 ◽  
Vol 26 (8) ◽  
pp. 1697-1708 ◽  
Author(s):  
Robert L. Mikkelsen
Keyword(s):  
Nitrogen Source ◽  
By Products
Sign in / Sign up

Export Citation Format

Share Document