Resilient food supply chain design: Modelling framework and metaheuristic solution approach
Bottani, Eleonora ; Murino, Teresa ; Schiavo, Massimo ; Akkerman, Renzo - \ 2019
Computers & Industrial Engineering 135 (2019). - ISSN 0360-8352 - p. 177 - 198.
Ant colony optimization - Food supply chain design - Multi-objective optimization - Multiple-sourcing policy - Resilient supply chain design - Supply chain management
This paper addresses the Resilient Food Supply Chain Design (RFSCD) problem, which is the problem of designing a food supply chain that is resilient enough to ensure business operations continuity in the event of risks or disruptions. Based on a graph theory representation of the food supply chain, this paper proposes a bi-objective mixed-integer programming formulation for this problem. The objectives are to (1) maximize the total profit over a one-year time span and (2) minimize the total lead time of the product along the supply chain. To solve the model, an Ant Colony Optimization (ACO) algorithm is presented. The developed model is suitable for adoption for the design of a multi-product resilient food supply chain that makes use of a multiple sourcing policy to deal with unexpected fluctuations of market demand and disruptions in raw materials supply. The adapted ACO algorithm is tested on a case study, referring to the SC of readymade UHT tomato sauce, which is particularly vulnerable to such risks.
Microalgae as human food : Chemical and nutritional characteristics of the thermo-acidophilic microalga Galdieria sulphuraria
Graziani, Giulia ; Schiavo, Simona ; Nicolai, Maria Adalgisa ; Buono, Silvia ; Fogliano, Vincenzo ; Pinto, Gabriele ; Pollio, Antonino - \ 2013
Food & Function 4 (2013)1. - ISSN 2042-6496 - p. 144 - 152.
The use of microalgae as a food source is still poorly developed because of the technical difficulties related to their cultivation and the limited knowledge about their chemical composition and nutritional value. The unicellular red microalga Galdieria sulphuraria has a very high daily productivity and its cultivation under acidic conditions avoided any bacterial contamination. G. sulphuraria can be cultured under autotrophic and heterotrophic conditions: in this study a screening of 43 strains showed that in the latter case a duplication of biomass production was obtained. The proximate composition (protein, carbohydrates, fiber and lipids), the micronutrient content (carotenoids, phycobiliproteins, chlorophylls and vitamins) together with the antioxidant activity of the biomass produced by a selected strain of G. sulphuraria under both cultivation conditions were determined. Results showed that the material is rich in proteins (26-32%) and polysaccharides (63-69%) and poor in lipids. Under heterotrophic cultivation conditions, the lipid moiety mainly contained monounsaturated fatty acids. Among micronutrients, some B group vitamins are present, beta-carotene is the main carotenoid and phycobiliproteins are present under both cultivating conditions. G. sulphuraria proteins are strictly associated with polysaccharide components and therefore not digestible. In the second part of the work, an extraction protocol using Viscozyme L, a commercial enzymatic preparation containing a mixture of polysaccharidases, was developed which made G. sulphuraria proteins a good substrate for human gastrointestinal enzymes. All in all, the data suggested that G. sulphuraria biomass has a potential use as food ingredients both for protein-rich or insoluble dietary fibre-rich applications. The low concentration of lipids and the absence of green color make this microalgae source particularly useful for the addition to many food preparations.
Effects of a simple or a complex starter microbiota on the gastric transcriptome profile of caesarean derived piglets
Priori, D. ; Colombo, M. ; Koopmans, S.J. ; Jansman, A.J.M. ; Schiavo, G. ; Trevisi, P. ; Bosi, P. - \ 2013
In: Energy and protein metabolism and nutrition in sustainable animal production / Oltjein, J.W., Kebreab, E., Lapierre, H., Wageningen, The Netherlands : Wageningen Academic Publisher (134 ) - ISBN 9789086862276 - p. 295 - 296.
Recent research suggests that early exposure of piglets to a diverse microbiota can shape the skills of gut-associated lymphoid tissue to respond to exogenous molecules (Lewis et al., 2012). In pig, a short encounter with a complex microbiota in the early life can be sufficient to influence the intestinal microbiota in the following weeks (Jansman et al., 2012). The priming effect of the complexity of the microbiota that enter the digestive tract, is not fully characterized. The gastric barrier of newborn piglets is not fully active and early contact with microbes can affect functional maturation of the stomach. Thus we aimed at evaluating the effect of complexity of starter microbiota on the gastric transcriptome profile of young pigs.
|The secretory nature of the lesion of carrot cell mutant ts11, rescuable by chitinase.
Baldan, B. ; Guzzo, F. ; Filippini, F. ; Schiavo, F. Lo; Vitale, A. ; Vries, S.C. de; Mariani, P. ; Terzi, M. - \ 1997
Planta 203 (1997). - ISSN 0032-0935 - p. 381 - 389.
|Characterization of carrot chitinases able to rescue the temperature-sensitive variant ts11.
Kragh, K. ; Jong, A.J. de; Toonen, M.A.J. ; Bucherna, N. ; Schiavo, F. Lo; Hendriks, T. ; Meijer, E.A. ; Kippers, A. ; Mikkelsen, J.D. ; Vries, S.C. de - \ 1996
Plant Molecular Biology 31 (1996). - ISSN 0167-4412 - p. 631 - 645.
Rhizobium lipooligosaccharides rescue a carrot somatic embryo mutant.
Jong, A.J. de; Heidstra, R. ; Spaink, H.P. ; Hartog, M.V. ; Meijer, E.A. ; Hendriks, T. ; Schiavo, F. Lo; Terzi, M. ; Bisseling, T. ; Kammen, A. van; Vries, S.C. de - \ 1993
The Plant Cell 5 (1993). - ISSN 1040-4651 - p. 615 - 620.
At a nonpermissive temperature, somatic embryos of the temperature-sensitive (ts) carrot cell mutant ts11 only proceed beyond the globular embryo stage in the presence of medium conditioned by wild-type embryos. The causative component in the conditioned medium has previously been identified as a 32-kD acidic endochitinase. In search of a function for this enzyme in plant embryogenesis, several compounds that contain oligomers of N-acetylglucosamine were tested for their ability to promote ts11 embryo formation. Of these compounds, only the Rhizobium lipooligosaccharides or nodulation (Nod) factors were found to be effective in rescuing the formation of ts11 embryos. These results suggest that N-acetylglucosamine-containing lipooligosaccharides from bacterial origin can mimic the effect of the carrot endochitinase. This endochitinase may therefore be involved in the generation of plant analogs of the Rhizobium Nod factors.
A carrot somatic embryo mutant is rescued by chitinase.
Jong, A.J. de; Cordewener, J.H.C. ; Schiavo, F. Lo; Terzi, M. ; Vandekerckhove, J. ; Kammen, A. van; Vries, S.C. de - \ 1992
The Plant Cell 4 (1992). - ISSN 1040-4651 - p. 425 - 433.
|A Daucus carota temperature sensitive mutant can be complemented with a wild type extracellular protein.
Schiavo, F. Lo; Jong, A.J. de; Cordewener, J.H.G. ; Terzi, M. ; Kammen, A. van; Vries, S.C. de - \ 1990
In: Abstractbook EMBO Workshop Molecular basis of plant embryogenesis, Wageningen / van Kammen, A., de Vries, S.C., - p. 59 - 59.
|Developmental mutants and extracellular proteins in carrot somatic embryogenesis.
Vries, S.C. de; Booij, H. ; Cordewener, J.H.G. ; Engelen, F. van; Jong, A.J. de; Kammen, A. van; Schiavo, F. Lo; Schellekens, G.A. ; Sterk, P. ; Terzi, M. - \ 1990
In: Plant embryogenesis, A. van Kammen, S.C. de Vries (eds.). Wageningen (1990) 20-21. Abstract Fundacion Juan March Symp. Approaches to plant development. Madrid, Spain (1990) 14-16. Ook: Phys. Plant. 79,2 (1990) A2. Abstr. 7th Congr. Fed. Eur. Soc. Plant Physiology. Ook: Abstractbook EMBO Workshop Molecular basis of
A carrot cell variant temperature sensitive for somatic embryogenesis reveals a defect in the glycosylation of extracellular proteins.
Schiavo, F. Lo; Giuliano, G. ; Vries, S.C. de; Genga, A. ; Bollini, R. ; Pitto, L. ; Cozzani, F. ; Nuti-Ronchi, V. ; Terzi, M. - \ 1990
Molecular and General Genetics 223 (1990). - ISSN 0026-8925 - p. 385 - 393.