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•-Baker's yeast wastewater is among the severe environmental threat with 29000 mg/L COD.•- M. indicus, M. hiemalis, N. intermedia, and A. oryzae were grown on the wastewater.•- Fungi ...reduced the total COD of wastewater by 36.3%.•- Fungal biomass has valuable amino acids and minerals for aquaculture feed.•- The effluent remained was anaerobically digested to biogas and to further remove COD.
Baker's yeast production industry generates large quantities of high chemical oxygen demand (COD) wastewater. The integration of baker's yeast wastewater (BYW) for an innovative two-step waste biorefinery process by producing protein-rich fungal biomass and biogas along with COD and nutrients removal was the main object of the present research. In the first step, fungal biomass production from BYW was investigated using four species of filamentous fungi. The maximum biomass yield of 5.13 g/L BYW containing 43.8% mycoprotein and 36.3% COD removal was achieved by A. oryzae. In the second step, to produce biogas and further remove organic matter, the effluent of fungal fermentation was subjected to anaerobic digestion and COD removal between 22.4 and 44.2% was obtained. Overall, 1 m3 of BYW yielded 5.13 kg of protein-rich biomass and 1.42 m3 of methane. Additionally, pigment production using N. intermedia was investigated, and 1.54 mg carotenoids/g biomass was produced.
Based on the stationary zero-curvature equation and the Lenard recursion equations, we derive the coupled modified Korteweg–de Vries (cmKdV) hierarchy associated with a 3×3 matrix spectral problem. ...Resorting to the Baker–Akhiezer function and the characteristic polynomial of Lax matrix for the cmKdV hierarchy, we introduce a trigonal curve with three infinite points and two algebraic functions carrying the data of the divisor. The asymptotic properties of the Baker–Akhiezer function and the two algebraic functions are studied near three infinite points on the trigonal curve. Algebro-geometric solutions of the cmKdV hierarchy are obtained in terms of the Riemann theta function.
Sweetpotato (Ipomoea batatas L. Lam. 2n = 6x = 90) is a highly heterozygous, clonally propagated crop for which population hybrid breeding is expected to result in yield jumps and large genetic gain ...increases. The main objective of this study was to select parents for a heterosis exploiting breeding scheme in Uganda using general combining ability and index selection aggregating yield and biotic stress traits. Two large and very diverse breeding populations established in Uganda (UGA A, 50 parents; UGA B, 80 parents) were recombined for this study into a hybrid population comprising 8097 genotypes from 1097 interpopulation families. Parents and offspring clones were evaluated in unreplicated trials across five environments during 2018/2019, together with two commercial checks (Ejumula and NASPOT 8). Using mixed model analysis, breeding values (BVs) were estimated across traits (i.e., storage root yield, commercial roots per plant, foliage yield, and resistance to sweetpotato virus disease SPVD and Alternaria blight). For storage root yield, the BVs ranged from 3.5 to 10 t ha−1 and from 2 to 12 t ha−1 for parents in UGA A and B, respectively. For SPVD resistance, scored one month before harvest, the BVs ranged from 3.3 to 4.3 and from 3.1 to 4.7 for parents in UGA A and B, respectively. Out of 130 parental candidates, 40 parents were selected (20 for each parental group). The plan is to use in the future GCA values combined by a modified Pesek‐Baker index using standardized desired genetic gains to select parents together with other information such as flesh color of parental material.
Core Ideas
High SPVD pressure environments might not be appropriate to estimate genetic parameters for yield traits.
The determination of GCA appears to be extremely important for the selection of sweetpotato parents.
The proposed modified Pesek‐Baker index resulted in satisfactory prediction of responses across all key traits.
Dave, who's getting a blood transfusion (maybe for leukaemia); Steve, who fractured his leg and moves around in a wheelchair; Betsy, who is admitted because she is very sad and doesn't smile anymore ...(maybe a major depressive episode). 1 Bell C. Does Peppa Pig encourage inappropriate use of primary care resources? BMJ 2017; 359: j5397. doi:10.1136/bmj.j5397 29229662 2 Rey HA Rey M. Curious George goes to the hospital.
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