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Publikationer (10 of 32) Visa alla publikationer
Brancoli, P., Lundin, M., Bolton, K. & Eriksson, M. (2019). Bread loss rates at the supplier-retailer interface – Analysis of risk factors tosupport waste prevention measures. Resources, Conservation and Recycling, 128-136
Öppna denna publikation i ny flik eller fönster >>Bread loss rates at the supplier-retailer interface – Analysis of risk factors tosupport waste prevention measures
2019 (Engelska)Ingår i: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, s. 128-136Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This paper quantifies bread waste throughout the Swedish supply chain and investigates the loss rate of prepackagedbread products at the supplier-retailer interface. The goal is to understand the extent of bread waste inSweden and to identify risk factors for high quantities of waste at the supplier-retailer interface, in order toprovide information supporting waste prevention measures. The study uses primary data, in combination withnational statistics and data from sustainability reports and the literature. Primary data were collected from 380stores of a Swedish retail company and a bakery. Bread waste was calculated to be 80 410 tons/year in Sweden,the equivalent of 8.1 kg per person/year, and was found to be concentrated at households and in retail, specificallyat the supplier-retailer interface. The results provide evidence that take-back agreements between suppliersand retailers, where the retailer only pays for sold products and the supplier bears the cost of the unsoldproducts and their collection and treatment, are risk factors for high waste generation. Current business modelsmay need to be changed to achieve a more sustainable bread supply chain with less waste.

Nyckelord
Food waste, Bread, Retail, Take-back agreement, Waste prevention, Reasons
Nationell ämneskategori
Naturresursteknik
Forskningsämne
Resursåtervinning
Identifikatorer
urn:nbn:se:hb:diva-21006 (URN)10.1016/j.resconrec.2019.04.027 (DOI)
Projekt
Supermarket food waste
Tillgänglig från: 2019-05-07 Skapad: 2019-05-07 Senast uppdaterad: 2019-05-13Bibliografiskt granskad
Bátori, V., Lundin, M., Åkesson, D., Lennartsson, P. R., Taherzadeh, M. J. & Zamani, A. (2019). The Effect of Glycerol, Sugar, and Maleic Anhydride on Pectin-Cellulose Thin Films Prepared from Orange Waste. POLYMERS, 11(3)
Öppna denna publikation i ny flik eller fönster >>The Effect of Glycerol, Sugar, and Maleic Anhydride on Pectin-Cellulose Thin Films Prepared from Orange Waste
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2019 (Engelska)Ingår i: POLYMERS, Vol. 11, nr 3Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This study was conducted to improve the properties of thin films prepared from orange waste by the solution casting method. The main focus was the elimination of holes in the film structure by establishing better cohesion between the major cellulosic and pectin fractions. For this, a previously developed method was improved first by the addition of sugar to promote pectin gelling, then by the addition of maleic anhydride. Principally, maleic anhydride was introduced to the films to induce cross-linking within the film structure. The effects of concentrations of sugar and glycerol as plasticizers and maleic anhydride as a cross-linking agent on the film characteristics were studied. Maleic anhydride improved the structure, resulting in a uniform film, and morphology studies showed better adhesion between components. However, it did not act as a cross-linking agent, but rather as a compatibilizer. The middle level (0.78%) of maleic anhydride content resulted in the highest tensile strength (26.65 +/- 3.20 MPa) at low (7%) glycerol and high (14%) sugar levels and the highest elongation (28.48% +/- 4.34%) at high sugar and glycerol levels. To achieve a uniform film surface with no holes present, only the lowest (0.39%) level of maleic anhydride was necessary.

Nyckelord
bio-based, film, mechanical properties, polysaccharides, resource recovery, solution casting, orange waste
Nationell ämneskategori
Industriell bioteknik
Forskningsämne
Resursåtervinning; Resursåtervinning
Identifikatorer
urn:nbn:se:hb:diva-21529 (URN)10.3390/polym11030392 (DOI)000464512900002 ()2-s2.0-85066752753 (Scopus ID)
Tillgänglig från: 2019-08-06 Skapad: 2019-08-06 Senast uppdaterad: 2019-08-07
Mahboubi, A., Lundin, M., Doyen, W., De Wever, H. & Taherzadeh, M. J. (2018). Diffusion-based reverse membrane bioreactor for simultaneous bioconversion of high-inhibitor xylose-glucose media. Process Biochemistry, 72, 23-30
Öppna denna publikation i ny flik eller fönster >>Diffusion-based reverse membrane bioreactor for simultaneous bioconversion of high-inhibitor xylose-glucose media
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2018 (Engelska)Ingår i: Process Biochemistry, ISSN 1359-5113, E-ISSN 1873-3298, Vol. 72, s. 23-30Artikel i tidskrift (Refereegranskat) Published
Nyckelord
Reverse membrane bioreactor, Concentration gradient, Diffusion rate, Fermentation, Inhibitor detoxification
Nationell ämneskategori
Industriell bioteknik
Identifikatorer
urn:nbn:se:hb:diva-15219 (URN)10.1016/j.procbio.2018.06.007 (DOI)000442710600003 ()2-s2.0-85048947972 (Scopus ID)
Tillgänglig från: 2018-10-31 Skapad: 2018-10-31 Senast uppdaterad: 2018-11-21Bibliografiskt granskad
Patinvoh, R., Lundin, M., Taherzadeh, M. J. & Sárvári Horváth, I. (2018). Dry Anaerobic Co-Digestion of Citrus Wastes with Keratin and Lignocellulosic Wastes: Batch And Continuous Processes. Waste and Biomass Valorization
Öppna denna publikation i ny flik eller fönster >>Dry Anaerobic Co-Digestion of Citrus Wastes with Keratin and Lignocellulosic Wastes: Batch And Continuous Processes
2018 (Engelska)Ingår i: Waste and Biomass Valorization, ISSN 1877-2641, E-ISSN 1877-265XArtikel i tidskrift (Refereegranskat) Published
Abstract [en]

Dry anaerobic co-digestion of citrus wastes (CW) with chicken feather (CF), wheat straw (WS) and manure bedded with straw (MS) was investigated in batch and continuous processes. Experiments were designed with different mixing ratios considering the inhibitory effect of CW, C/N ratio, and total solid content of individual feedstocks. Best mixing ratio (CF:CW:WS:MS) of 1:1:6:0, enhanced methane yield by 14% compared to the expected yield calculated according to the methane yields obtained from the individual fractions. The process performance of this mixture was then investigated in continuous plug flow reactors at different organic loading rates (OLR) with feedstock total solid contents of 21% TS (RTS21) and 32% TS (RTS32). At OLR of 2 gVS/L/d, a methane yield of 362 NmlCH4/gVSadded was obtained from RTS21, which is 13.5% higher than the yield obtained from RTS32 (319 NmlCH4/gVSadded). However, it was not possible to achieve a stable process when the OLR was further increased to 3.8 gVS/L/d; there were increased total VFAs concentrations and a decline in the biogas production.

Ort, förlag, år, upplaga, sidor
Springer Netherlands, 2018
Nyckelord
Solid wastes, Dry co-digestion, Batch process, Continuous process, Process performance
Nationell ämneskategori
Industriell bioteknik
Identifikatorer
urn:nbn:se:hb:diva-15640 (URN)10.1007/s12649-018-0447-y (DOI)2-s2.0-85053541114 (Scopus ID)
Tillgänglig från: 2019-01-07 Skapad: 2019-01-07 Senast uppdaterad: 2019-01-07
Lennartsson, P. R., Ferreira, J. A., Taherzadeh, M. J., Lundin, M. & Gmoser, R. (2018). Pigment Production by the Edible Filamentous Fungus Neurospora Intermedia. Fermentation, 4(11), 1-15
Öppna denna publikation i ny flik eller fönster >>Pigment Production by the Edible Filamentous Fungus Neurospora Intermedia
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2018 (Engelska)Ingår i: Fermentation, ISSN 2311-5637, Vol. 4, nr 11, s. 1-15Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The production of pigments by edible filamentous fungi is gaining attention as a result of the increased interest in natural sources with added functionality in the food, feed, cosmetic, pharmaceutical and textile industries. The filamentous fungus Neurospora intermedia, used for production of the Indonesian food “oncom”, is one potential source of pigments. The objective of the study was to evaluate the fungus’ pigment production. The joint effect from different factors (carbon and nitrogen source, ZnCl2, MgCl2 and MnCl2) on pigment production by N. intermedia is reported for the first time. The scale-up to 4.5 L bubble column bioreactors was also performed to investigate the effect of pH and aeration. Pigment production of the fungus was successfully manipulated by varying several factors. The results showed that the formation of pigments was strongly influenced by light, carbon, pH, the co-factor Zn2+ and first- to fourth-order interactions between factors. The highest pigmentation (1.19 ± 0.08 mg carotenoids/g dry weight biomass) was achieved in a bubble column reactor. This study provides important insights into pigmentation of this biotechnologically important fungus and lays a foundation for future utilizations of N. intermedia for pigment production. 

Ort, förlag, år, upplaga, sidor
Göteborg: , 2018
Nyckelord
pigments; neurospora intermedia; carotenoids; edible filamentous fungi; ascomycetes
Nationell ämneskategori
Teknik och teknologier
Forskningsämne
Resursåtervinning
Identifikatorer
urn:nbn:se:hb:diva-13654 (URN)10.3390/fermentation4010011 (DOI)
Tillgänglig från: 2018-02-14 Skapad: 2018-02-14 Senast uppdaterad: 2018-08-20Bibliografiskt granskad
Pagés Díaz, J., Pereda Reyes, I., Sanz, J. L., Lundin, M., Taherzadeh, M. J. & Sárvári Horváth, I. (2017). A comparison of process performance during the anaerobic mono-and co-digestion of slaughter house waste through different operational modes. Journal of Environmental Sciences(China)
Öppna denna publikation i ny flik eller fönster >>A comparison of process performance during the anaerobic mono-and co-digestion of slaughter house waste through different operational modes
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2017 (Engelska)Ingår i: Journal of Environmental Sciences(China), ISSN 1001-0742, E-ISSN 1878-7320Artikel i tidskrift (Refereegranskat) Accepted
Abstract [en]

The use of consecutive feeding was applied to investigate the response of the microbial biomass to a second addition of substrates in terms of biodegradation using batch tests as a promising alternative to predict the behavior of the process. Anaerobic digestion (AD) of the slaughterhouse waste (SB) and its co-digestion with manure (M), various crops (VC), and municipal solid waste were evaluated. The results were then correlated to previous findings obtained by the authors for similar mixtures in batch and semi-continuous operation modes. AD of the SB failed showing total inhibition after a second feeding. Co-digestion of the SB + M showed a significant improvement for all of the response variables investigated after the second feeding, while co-digestion of the SB + VC resulted in a decline in all of these response variables. Similar patterns were previously detected, during both the batch and the semi-continuous modes.

Nyckelord
Co-digestion, Biomethane potential test, Second feeding, Specific methanogenic activity, Slaughterhouse waste
Nationell ämneskategori
Bioenergi
Identifikatorer
urn:nbn:se:hb:diva-13561 (URN)10.1016/j.jes.2017.06.004 (DOI)427593900015 ()2-s2.0-85021321465 (Scopus ID)
Tillgänglig från: 2018-01-17 Skapad: 2018-01-17 Senast uppdaterad: 2018-11-22Bibliografiskt granskad
Kashi, S., Satari, B., Lundin, M., Sárvári Horváth, I. & Othman, M. (2017). Application of a mixture design to identify effects of susbtrates ratios and intractions on anaerobic digestion of municipal sludge, grease trapwaste, and meat processing waste. Journal of Environmental Chemical Engineering, 5(6), 6156-6164
Öppna denna publikation i ny flik eller fönster >>Application of a mixture design to identify effects of susbtrates ratios and intractions on anaerobic digestion of municipal sludge, grease trapwaste, and meat processing waste
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2017 (Engelska)Ingår i: Journal of Environmental Chemical Engineering, ISSN 2160-6544, E-ISSN 2213-3437, Vol. 5, nr 6, s. 6156-6164Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Anaerobic mono- and co-digestion of two municipal sludge wastes (A and C), grease trap waste (B), and meat processing waste (D) were investigated under mesophilic temperature conditions by biochemical methane potential (BMP) assays and kinetic modeling. Wastes ratios in the mixtures were systematically selected based on Simplex Lattice mixture design, and statistical analyses were performed to elucidate possible synergetic and antagonistic effects of wastes interactions on the kinetics and ultimate methane potentials of wastes co-digestion. The mixture of 1/8A + 1/8B + 1/8C + 5/8D (VS basis) showed the highest COD and VS removals of 35.0% and 33.8%, respectively. Substrates B and D with 980 and 641 mL/g-VS methane yields, respectively, had the highest BMP. However, with reaction rate constants of 0.047 and 0.070 d−1, their methane production was very slow. It was observed that diluting these organic-rich but complex substrates with readily soluble wastes (A and C) enhanced their biogas production rate markedly. Statistical analysis showed that the interactions among the substrates in co-digestion did not have a significant impact on the ultimate cumulative methane yields. Nevertheless, these interactions proved to have synergic and antagonistic effects on the reaction rates, leading to accelerated or hindered methane production rates. As a result, while the methane yield of wastes co-digestion could be predicted by proportional summation of methane yields obtained in mono-digestions of these waste fractions, such linear regressions were unable to provide a good estimation of the rate constants. Quadratic equations, however, were found to estimate the rate constants of the co-digestion process with good accuracy

Nyckelord
Anaerobic co-digestion, Biochemical methane potential, KineticsMixture design, Interaction
Nationell ämneskategori
Bioenergi
Identifikatorer
urn:nbn:se:hb:diva-13559 (URN)10.1016/j.jece.2017.11.045 (DOI)000416982600095 ()2-s2.0-85034453359 (Scopus ID)
Tillgänglig från: 2018-01-17 Skapad: 2018-01-17 Senast uppdaterad: 2018-01-18Bibliografiskt granskad
Satari, B., Palhed, J., Karimi, K., Lundin, M., Taherzadeh, M. J. & Zamani, A. (2017). Process optimization for citrus waste biorefinery via simultaneous pectin extraction and pretreatment.. BioResources, 12(1), 1706-1722
Öppna denna publikation i ny flik eller fönster >>Process optimization for citrus waste biorefinery via simultaneous pectin extraction and pretreatment.
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2017 (Engelska)Ingår i: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 12, nr 1, s. 1706-1722Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In a novel valorization approach for simultaneous pectin extn. and pretreatment (SPEP) of citrus waste (CW) by dil. nitric acid and ethanol, almost all of the CW was converted to bio-derived chems. in a singlestep process at a low/moderate temp. The SPEP was performed at different temps. (70 °C and 80 °C), pH (1.8, 3.0, and 4.3), and extn. times (2 h and 3 h) with a full factorial design. The max. pectin yield of 45.5% was obtained at pH 1.8, 80 °C, and 2 h. The pectin yields at pH 1.8 were much higher than at pH 4.3 and 3. Also, the degree of methyl-esterification at pH 1.8 was higher than 50%, whereas at the higher pH, low methoxyl pectins were extd. The treated CW obtained after the SPEP, free from limonene, was subjected to sep. cellulolytic enzymic hydrolysis and ethanolic fermn. The glucose yields in the enzymic hydrolyzates were higher for the CW treated at pH 1.8. The fermn. of the enzymic hydrolyzates by Mucor indicus resulted in fungal biomass yields in the range of 355 to 687 mg per g of consumed sugars. The optimum conditions for obtaining the max. SPEP yield (glucose + pectin (g) / raw material (g)*100) were pH 1.8, 80 °C, and 2 h, which resulted in a yield of 58.7% (g/g CW). [on SciFinder(R)]

Ort, förlag, år, upplaga, sidor
North Carolina State University, Dep. of Wood and Paper Science, 2017
Nyckelord
Citrus waste, Dilute-acid, Enzymatic hydrolysis, Ethanol, Fermentation, Full factorial design, Fungal biomass, Limonene, Mucor indicus, Pectin, Pretreatment
Nationell ämneskategori
Industriell bioteknik
Identifikatorer
urn:nbn:se:hb:diva-12532 (URN)10.15376/biores.12.1.1706-1722 (DOI)000397065200123 ()2-s2.0-85028313752 (Scopus ID)
Tillgänglig från: 2017-08-27 Skapad: 2017-08-27 Senast uppdaterad: 2017-10-23Bibliografiskt granskad
Patinvoh, R., Feuk-Lagerstedt, E., Lundin, M., Sárvári Horváth, I. & Taherzadeh, M. J. (2016). Biological pretreatment of chicken feather and biogas production from total broth. Applied Biochemistry and Biotechnology, 180(7), 1401-1415
Öppna denna publikation i ny flik eller fönster >>Biological pretreatment of chicken feather and biogas production from total broth
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2016 (Engelska)Ingår i: Applied Biochemistry and Biotechnology, ISSN 0273-2289, E-ISSN 1559-0291, Vol. 180, nr 7, s. 1401-1415Artikel i tidskrift (Refereegranskat) Published
Nyckelord
Chicken feather; Pretreatment; Bacillus substilis strain; Keratinase; Biogas production; Mesophilic; Hydrolysate; Total broth; Bacteria granules
Nationell ämneskategori
Bioenergi
Identifikatorer
urn:nbn:se:hb:diva-13563 (URN)10.1007/s12010-016-2175-8 (DOI)000389891800011 ()2-s2.0-84976333954 (Scopus ID)
Tillgänglig från: 2018-01-17 Skapad: 2018-01-17 Senast uppdaterad: 2018-11-28Bibliografiskt granskad
Nair, R. B., Lundin, M., Lennartsson, P. R. & Taherzadeh, M. J. (2016). Optimizing dilute phosphoric acid pretreatment of wheat straw in the laboratory and in a demonstration plant for ethanol and edible fungal biomass production using Neurospora intermedia.. Journal of chemical technology and biotechnology (1986)
Öppna denna publikation i ny flik eller fönster >>Optimizing dilute phosphoric acid pretreatment of wheat straw in the laboratory and in a demonstration plant for ethanol and edible fungal biomass production using Neurospora intermedia.
2016 (Engelska)Ingår i: Journal of chemical technology and biotechnology (1986), ISSN 0268-2575, E-ISSN 1097-4660Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND : A method is described that uses dil. phosphoric acid for wheat straw pretreatment and subsequent ethanol and fungal biomass prodn. with the edible fungus Neurospora intermedia. Dil. phosphoric acid pretreatment of wheat straw was optimized at a lab. scale, and the results were validated in a biorefinery demonstration plant for the first time. The various conditions for the dil. acid pretreatment include such factors as phosphoric acid concns. (0.5-3.0% w/v), temp. (150-210 °C), and reaction time (5-20 min). RESULTS : The optimal pretreatment conditions were detd. as an acid concn. of 1.75% (w/v) at a temp. of 190 °C for 15 min, based on the max. enzymic digestibility with the min. inhibitor release. The efficiency of enzymic polysaccharide hydrolysis was 36% for untreated straw and 86% for straw pretreated with dil. phosphoric acid. Scale up of the pretreatment at a biorefinery demonstration plant improved the process, with the subsequent efficiency of polysaccharide hydrolysis being 95% of the theor. max. Ethanol fermn. of enzymically hydrolyzed wheat straw using N. intermedia showed an improvement in the ethanol yield from 29% (with untreated straw) to 94% (with dil. phosphoric acid pretreated straw) of the theor. max. CONCLUSION : This study opens up an alternative strategy for the efficient use of wheat straw for the prodn. of ethanol and edible fungal biomass in existing wheat-to-ethanol plants.

Nyckelord
Dilute phosphoric acid, Ethanol, Fermentation, Filamentous fungi, Optimization, Pretreatment
Nationell ämneskategori
Industriell bioteknik
Identifikatorer
urn:nbn:se:hb:diva-11393 (URN)10.1002/jctb.5119 (DOI)000403025100014 ()2-s2.0-84997724781 (Scopus ID)
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CAPLUS AN 2016:1751717(Journal)

Tillgänglig från: 2016-12-14 Skapad: 2016-12-14 Senast uppdaterad: 2018-12-01Bibliografiskt granskad
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