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Wyszukujesz frazę "food wastes" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Home Composting of Food Wastes Using Rotary Drum Reactor as an Alternative Treatment Option for Organic Household Wastes
Autorzy:
Sayara, Tahseen
Shadouf, Mahmoud
Issa, Hour
Obaid, Hanan
Hanoun, Ruba
Powiązania:
https://bibliotekanauki.pl/articles/2105275.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
waste management
food wastes
home composting
rotary drum composter
Opis:
In this research, the application of home composting system as an alternative approach for household organic waste management was investigated. A rotary drum home composter made of galvanized steel was designed and used for the composting process. It consists of two chambers of about 170 L each, and is equipped with sufficient holes to ensure aerobic conditions as well as valves for leachate drainage. Different parameters, including using waste to bulking agent ratio, co-composting using animal manure and introducing charcoal with the feedstock were investigated. The designed reactor proved its efficiency for composting purposes, according to the obtained results regarding the degradation of the organic waste with ease operation and monitoring. The highest reduction volume (85%) in the composted materials was in treatment of 1:0.5 waste to bulking agent, whereas co-composting using animal manure better enhanced the organic matter degradation, as the highest decrease in the C/N ratio (about 62%) was observed in this treatment. No significant effect of the charcoal war recorded regarding the degradation process, but was clear in reducing odors.
Źródło:
Journal of Ecological Engineering; 2022, 23, 6; 139--147
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of glycosylated flavonoids extracted from sweet-cherry stems, as antibacterial agents against pathogenic Escherichia coli isolates
Autorzy:
Aires, Alfredo
Dias, Carla
Carvalho, Rosa
Saavedra, Maria
Powiązania:
https://bibliotekanauki.pl/articles/1038644.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
flavonoids
agro-food wastes
enhanced extraction
antimicrobial agents
pathogenic bacteria
Opis:
The aim of this study was to evaluate the bioactivity of flavonoids extracted from sweet-cherry stems which are often used by a traditional system of medicine to treat gastro-intestinal and urinary tract infections but lacking any consistent scientific evidence; moreover the information about the class of phenolics, their content and the potential bioactivity of such material is very scarce. Thus, in this context, we have set a research study in which we evaluated the profile and content of phenolics extracted from sweet-cherry stems through a conventional (70ºC and 20 min) and ultrasound assisted extraction (40 kHz, room temperature and 20 min). The extracts were phytochemically characterized by using an HPLC-DAD-UV/VIS system and assayed by an in vitro minimum inhibitory concentration (MIC) bioassay against Escherichia coli isolates. Simultaneously, the total antioxidant activities were measured using the 2,2'-azinobis-3-ethylbenzothiazoline-6-sulphonate (ABTS•+) radical cation assay. Our results indicate that sweet-cherry stems have a high content of sakuranetin, ferulic acid, p-coumaric acid, p-coumaroylquinic acid, chlorogenic acid and its isomer neochlorogenic acid. Their average levels were highly affected by the extraction method used (p<0.001). The same trend was observed for total antioxidant activity and MIC values. The extracts produced with ultrasounds presented both, a higher total antioxidant activity and a lower minimum inhibitory concentration. Statistical analyses of our results showed a significant correlation (p<0.01) of total antioxidant activity and minimum inhibitory concentration with phenolics present in the extracts studied. Thus, we can conclude that cherry stems can be further exploited to purify compounds and produce coproducts with enhanced biologically added value for pharmaceutical industry.
Źródło:
Acta Biochimica Polonica; 2017, 64, 2; 265-271
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agro-food wastes utilization by Blakeslea trispora for carotenoids production
Autorzy:
Papaioannou, Emmanouil
Liakopoulou-Kyriakides, Maria
Powiązania:
https://bibliotekanauki.pl/articles/1039808.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Blakeslea trispora
β-carotene
natural substrates
agro-food wastes
biotechnologically produced carotenoids
Opis:
The all-trans-β-carotene is a natural pigment used in various industrial fields (food, cosmetics, pharmaceuticals, etc) and possesses the higher provitamin A activity, in respect to other carotenoids. All-trans-β-carotene is produced industrially by chemical and biotechnological means. For β-carotene biotechnological production in industrial scale mated cultures of Blakeslea trispora, a heterothallic fungus, are mainly used. Despite the intense research for β-carotene production by B. trispora, natural substrate utilization has not been extensively studied. Solid agro-food wastes such as cabbage, watermelon husk and peach peels from northern Greece as main carbon source into submerged B. trispora cultures for carotenoids production, was examined. The media containing only the agro-food waste (2-4) gave a biomass accumulation 7.77±0.4 g/L, while a reference medium 1 with glucose (10 g/L) gave 4.65±0.21 g/L. In another experiments series agro-food wastes were used with corn steep liquor and thiamine (media 6-8), giving a biomass accumulation and total carotenoid volumetric production 10.2±2.41 g/L and 230.49±22.97 mg/L, respectively. These are the higher values reported for solid wastes so far in respect to those obtained from a synthetic medium, with higher glucose concentration of 50 g/L where the correspondent values were 9.41±1.18 g/L and 45.63 mg/L respectively. The results support that B. trispora is able to utilize, almost equivalently, different origin agro-food wastes for carotenoids production. Furthermore, β-carotene percentage in all examined cases was over 76%, as it was estimated by HPLC analysis, suggesting that these agro food wastes may be used for high purity, large scale β carotene production.
Źródło:
Acta Biochimica Polonica; 2012, 59, 1; 151-153
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Food industry waste composting in a rotational reactor
Autorzy:
Tronina, P.
Bubel, F.
Powiązania:
https://bibliotekanauki.pl/articles/779660.pdf
Data publikacji:
2008
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
odpady z przemysłu spożywczego
nawozy organiczne
kompost
food wastes processing
organic fertilizer
compost
Opis:
The permanently rising costs of food industry waste management create a real necessity for searching for new economical and environmentally friendly technologies with which such waste can be utilized. The purpose of this study was an evaluation of waste composting using rotational reactor technology with further use of the resultant product as a fertilizer. In order to conduct the research, a rotational reactor was designed and constructed. For the composting process, such waste materials as meat and bone pulp, past its sell-by date dairy and bakery products, sawdust, poultry and cattle manure, were used. The composition of the composted masses was chosen so that their approximate C:N:P proportions and consistency were appropriate for the growth of biodegradating micro-organisms. The efficiency of the presented technology was evaluated based on the inactivation of selected strains of bacteria and the eggs of invasive parasites. The products obtained were tested by the Institute of Soil Science and Plant Cultivation in Puławy with regard to its possible environmental usage.
Źródło:
Polish Journal of Chemical Technology; 2008, 10, 2; 37-42
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lycopene recovery from tomato peel under mild conditions assisted by enzymatic pre-treatment and non-ionic surfactants
Autorzy:
Papaioannou, Emmanouil
Karabelas, Anastasios
Powiązania:
https://bibliotekanauki.pl/articles/1039778.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
enzymatic pre-treatment
non-ionic surfactant
carotenoids recovery
agro-food wastes
tomato peel lycopene recovery
Opis:
The tomato processing industry generates large quantities of tomato peel residues, usually creating environmental problems. These residues are a significant source of lycopene, thus providing an attractive alternative for profitable handling of these otherwise problematic by-products. The enzymatic pretreatment of these residues for lycopene recovery has already been employed, although the use of surfactants for enhancing the recovery has not been examined so far. The enzymatic pretreatment of tomato peels, using two commercially available pectinolytic enzyme preparations, was evaluated suggesting that there is an optimum pretreatment time of about 1 h, enzyme amount 250 Units/mL and no significant pH influence. Lycopene surfactant - assisted extraction was further investigated, showing that, among eight surfactants used, the most suitable was "Span 20", with an optimum ratio of 6-7 surfactant molecules per lycopene molecule. Sequential enzymatic pretreatment and surfactant-assisted extraction (30 min for each step) was evaluated leading to an improved lycopene extraction yield, with a somewhat smaller surfactant molar ratio (i.e. 4-5). In the latter case, the yield of lycopene recovery was almost four times greater compared to just 1 hr enzymatic pretreatment, and was approximately ten times greater compared to the recovery from untreated peels. Furthermore, such lipophilic compound recovery, avoiding the use of organic solvents, is environmentally attractive and ensures direct lycopene use in the food and cosmetics industries.
Źródło:
Acta Biochimica Polonica; 2012, 59, 1; 71-74
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the effects of management of apple pomace for energy purposes in fermentation and combustion processes
Porównanie efektów zagospodarowania wytłoków jabłkowych na cele energetyczne w procesach fermentacji oraz spalania
Autorzy:
Herkowiak, M.
Adamski, M.
Pilarski, K.
Dworecki, Z.
Witaszek, K.
Niedbała, G.
Piekutowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/334725.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
renewable energy sources
energy balance
higher heating value
biogas
food wastes
odnawialne źródła energii
bilans energetyczny
ciepło spalania
biogaz
odpady spożywcze
Opis:
The search for alternative fuels is becoming increasingly common due to exhausting conventional energy sources. One of the solutions is to manage waste from agricultural and food production for energy purposes. The aim of the study was to compare possible energy gains from the use of apple pomace as a fuel in two variants. The first option consisted in converting waste into solid fuel for combustion, while the second option included methane fermentation of pomace and the use of the resulting fermentation for combustion. The research was carried out to determine the energy usefulness of apple pomace extruders, among others. combustion heat, calorific value and biogas efficiency. The amount of energy that can be obtained from biogas resulting from the decomposition of pomace as well as from the post-process fermentation was also determined. Energy expenditures necessary for the processes that transform the raw material into fuel were simulated. Then an energy balance was carried out which showed that the fermentation of pomace and the combustion of the fermented pulp, taking into account the losses, resulted in an energy gain of 4.03 MJ⋅kg-1 (1.12 kWh⋅kg-1) higher than the use of pomace for combustion alone.
Ze względu na wyczerpujące się konwencjonalne źródła energii coraz powszechniejsze staje się poszukiwanie paliw alternatywnych. Jednym z rozwiązań jest zagospodarowywanie odpadów pochodzących z produkcji rolniczej oraz spożywczej na cele energetyczne. Celem pracy było porównanie możliwych zysków energetycznych z wykorzystania wytłoków jabłkowych jako paliwa w dwóch wariantach. Wariant pierwszy obejmował przekształcenie odpadu na paliwo stałe w celu spalenia, natomiast wariant drugi dotyczył fermentacji metanowej wytłoków oraz wykorzystania powstałego w jej wyniku pofermentu na sposób spalania. W pracy wykonano badania pozwalające określić przydatność energetyczną wytłoków jabłkowych m.in. ciepło spalania, wartość opałową oraz wydajność biogazową. Wyznaczono również ilość energii możliwą do uzyskania z biogazu powstałego w wyniku rozkładu wytłoków oraz z pofermentu pozostałego po tym procesie. Dokonano symulacji nakładów energetycznych potrzebnych na procesy przekształcające surowiec do postaci paliwa. Następnie wykonano bilans energetyczny, który wykazał, że w wyniku fermentacji wytłoków oraz spalania pofermentu przy uwzględnieniu strat możliwe jest uzyskanie o 4.03 MJ⋅kg-1 (1.12 kWh⋅kg-1)
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2018, 63, 4; 73-79
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjał produkcji metanu z odpadów z przemysłu żywności i napojów
The potential of biogas production from food and beverage industry waste
Autorzy:
Pazera, A.
Ślęzak, R.
Krzystek, L.
Ledakowicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/2073234.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
biogaz
potencjał produkcji metanu
odpady organiczne z przemysłu żywności i napojów
biogas
methane production potential
organic wastes from food and beverage industry
Opis:
Odpady organiczne z przemysłu żywności i napojów w Polsce mogą być wykorzystywane jako substrat do produkcji biogazu w procesie fermentacji. W roku 2013 w Polsce istniało 565 przedsiębiorstw produkujących rocznie powyżej 500 Mg odpadów z przemysłu żywności i napojów. Ilość generowanych odpadów z tych przedsiębiorstw wynosiła4023 tys. Mg o potencjale produkcji metanu 183,4 min m3/rok. W województwie podlaskim o wysokim potencjale produkcji biogazu oraz w województwie mazowieckim i małopolskim o największym zagęszczeniu zakładów przemysłowych nie było ani jednej biogazowni.
Organic wastes from food and beverage industry are very cheap substrate for biogas production in the anaerobic digestion process. In 2013 there were 565 companies producing annually more than 500 Mg of waste from food and beverage industry in Poland. The amount of waste generated was equal to 4023 thousands Mg, giving the methane production potential of 183.4 millions m3/year. In the Podlaskie province with very high potential of biogas production, the Subcarpathian region and Lubusz with the highest density of industrial plants there was no biogas plant.
Źródło:
Inżynieria i Aparatura Chemiczna; 2015, 4; 194--195
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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