POST-HARVEST QUALITY OF OZONATED MACAUBA FRUITS FOR BIODIESEL PRODUCTION

ABSTRACT The presence of microorganisms, especially during storage, can lead to the rapid deterioration of macauba fruits (Acrocomia aculeata) and reduce the quality of extracted oil for biodiesel production. An alternative to ensure the quality of the oil is the use of ozone gas, a oxidizing agent that has high antimicrobial and sanitizing power. The objective of this study was to evaluate the influence of high concentrations of ozone gas on macaúba fruit and its effect on the quality of the oil throughout storage for the production of biodiesel. Ozonation was performed 20 days after harvest using fruits with and without the epicarp. Ozone was applied at a concentration of 18.0 mg L-1 and a flow of 1.5 L min-1 for 10 h. After ozonation, the fruits were stored for different periods, and the physical-chemical parameters of the oil were evaluated. The ozonation of fruits without the epicarp visually reduced microorganism attack. In general, the ozonation process of macauba fruits maintained the visual characteristics of the fruits and the physical-chemical characteristics of the oil for biodiesel production compared to untreated fruits. The average acidity values of the oil were lower in the treatments with the ozone gas. Removal of the epicarp tends to facilitate the ozonation process, potentially by improving gas penetration into the fruit.

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The Mater-Bi® biodegradable film for strawberry (Fragaria x ananassa Duch.) mulching: effects on fruit yield and quality

Italian Journal of Agronomy ◽

10.4081/ija.2016.731 ◽

2016 ◽

Vol 11 (3) ◽

pp. 203 ◽

Cited By ~ 5

Author(s):

Luigi Morra ◽

Maurizio Bilotto ◽

Domenico Cerrato ◽

Raffaella Coppola ◽

Vincenzo Leone ◽

...

Keyword(s):

Bioactive Compounds ◽

Titratable Acidity ◽

Solid Content ◽

Soluble Solid Content ◽

Chemical Parameters ◽

Biodegradable Film ◽

Yield And Quality ◽

Physical Chemical ◽

Soluble Solid

Two trials in different agricultural farms were carried out from October 2014 to June 2015 with the aim to assess the advantages linked to the substitution of the low density polyethylene (LDPE) films for soil mulching with the Mater-Bi® biodegradable films in the strawberry cultivation under tunnel in Campania. Lifetime of biodegradable mulch and influence of type of mulch on the yield and the quality of cvs Sabrina and Fortuna were evaluated. Plants were cultivated on mulched, raised beds, high 40 cm from bottom soil. Mater-Bi® film was 20 µm thick while LDPE film was 50 mm thick. The physical-chemical parameters (firmness, pH, total soluble solid content, titratable acidity and skin colour) and some bioactive compounds (total polyphenols, flavonoids, anthocyanins, antioxidant activity) of fruits were determined by three samplings effected in consecutive months (from March to May 2015) of the harvest cycle. Biodegradable film guaranteed an effective mulch along the whole strawberry cycle (9-10 months including the time of drawing up of film). Yields of cv Sabrina on LDPE was 18% higher than those on Mater-Bi® while the opposite was detected in cv Fortuna (+10%). The physical-chemical parameters of fruits were not modified by the mulches. The content of the bioactive compounds, instead, resulted, in each time of sampling, significantly higher in fruits picked on Mater-Bi® based film.

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AVALIAÇÃO DA QUALIDADE DE LARANJA PÊRA APÓS ARMAZENAMENTO COM ETILENO

Boletim do Centro de Pesquisa de Processamento de Alimentos ◽

10.5380/cep.v20i2.1261 ◽

2002 ◽

Vol 20 (2) ◽

Author(s):

JORGE JOSÉ DO VALE OLIVEIRA ◽

MARIA CECÍLIA DE FIGUEIREDO TOLEDO ◽

JOSÉ MARIA MONTEIRO SIGRIST ◽

KATUMI YOTSUYANAGI ◽

IVÂNIA ATHIÉ

Keyword(s):

Relative Humidity ◽

Storage Period ◽

Quality Parameters ◽

Chemical Parameters ◽

Physical Chemical ◽

Before And After ◽

Orange Fruit

Laranjas da variedade Pêra, previamente armazenadas durante três dias, com e sem etileno foram pulverizadas com Imazalil, Tiabendazol e a mistura de ambos, formulados ou não com cera. Em seguida, foram mantidas durante 25 dias a 4ºC ± 2ºC/90% ± 5% de umidade relativa, sendo avaliados parâmetros de qualidade da laranja, antes e ao final do armazenamento. Com exceção do atributo cor não ocorreram diferenças estatisticamente significativas nos demais parâmetros químicos e físico-químicos, independente da exposição ao etileno. O etileno foi eficiente no desverdecimento de laranjas, sem comprometer seus atributos de qualidade, e o tratamento posterior com cera contribuiu para manter inalterado o padrão de cor obtido. EVALUATION OF THE QUALITY OF PÊRA ORANGE FRUIT AFTER STORAGE IN ETHYLENE Abstract Oranges of the variety Pêra previously stored during three days with and without ethylene were sprayed with Imazalil, Thiabendazole and a mixture of both fungicides, formulated with and without wax. Following this treatment the fruits were stored during 25 days at 4ºC ± 2ºC / 90% ± 5% of relative humidity, parameters related to orange quality were evaluated before and after the storage period. With exception of the attribute color, no significative statistically differences were observed in the chemical and physical-chemical parameters, independent of the exposure to ethylene. The ethylene was effective for the degreening of orange with no action on the quality parameters. The further treatment with wax contributed to maintain the pattern of colour unchanged.

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Post harvest evaluation of physical-chemical parameters of mechanically damaged Tahiti acid limes

Revista Brasileira de Pesquisa em Alimentos ◽

10.14685/rebrapa.v1i2.20 ◽

2010 ◽

Vol 1 (2) ◽

pp. 79

Author(s):

Michel Shoiti Tamura ◽

Roselene Ferreira Oliveira ◽

Simone Correia Molina ◽

Edmar Clemente

Keyword(s):

Titratable Acidity ◽

Soluble Solids ◽

Chemical Parameters ◽

Post Harvest ◽

Physical Chemical ◽

Randomized Design ◽

Significant Difference ◽

Completely Randomized Design ◽

Solids Content

From harvest to consumption, fruit and vegetables suffer a series of mechanical damages which, depending on their sensitiveness, may cause damages that put their final quality at risk. This work had as its objective evaluate the post harvest quality of mechanically damaged ‘Tahity’ acid limes. The experiment was carried out in a completely randomized design, with 3 repetitions and 7 fruits per treatment, mechanical damages were then evaluated by cutting and impacting in comparison to healthy fruits (control), and maintained for periods of 0, 3. 6, 9, 12, 15 and 18 days, thus obtaining a 3 x 7 factorial experiment. Analyses were made throughout the 18 days, so as to determine the total soluble solids content (expressed in °Brix); titratable acidity (in g of citric acid. 100mL-1); ratio (relationsoluble solids and titratable acidity); vitamin C (expressed in mg of ascorbic acid 100mL-1) and pH. The results obtained showed that there was significant difference in the chemical parameters evaluated, mainly those submitted to damaging treatment. DOI: http://dx.doi.org/10.14685/rebrapa.v1i2.20

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The quality of water of the Mantovo reservoir, Republic of Macedonia

Archives of Biological Sciences ◽

10.2298/abs0903501s ◽

2009 ◽

Vol 61 (3) ◽

pp. 501-512 ◽

Cited By ~ 2

Author(s):

Valentina Slavevska-Stamenkovic ◽

T. Stafilov ◽

S. Smiljkov ◽

M. Paunovic ◽

S. Hristovski

Keyword(s):

Organic Pollution ◽

Nutrient Concentrations ◽

Chemical Parameters ◽

Limnodrilus Hoffmeisteri ◽

Quality Of Water ◽

Environmental Status ◽

Physico Chemical ◽

High Concentrations ◽

Very High

The aim of the paper is to evaluate the quality of water of the Mantovo Reservoir (Southeast Macedonia)based on physico-chemical parameters and the macrozoobenthos. Monthly sampling was performed during 2003 and 2004. Temperature and DO depth profile data indicate that the Mantovo Reservoir is a dimictic lake. Based on mean nutrient concentrations, the Mantovo Reservoir can be considered as being phosphorus-deficient. During the summer stratification, very high concentrations of Mn (2,819 ?g/l)and Cu (147.6?g/l)were detected in the lower profundal. Limnodrilus hoffmeisteri was the dominant species, which indicates the presence of organic pollution. Dominance of Chaoborus crystallinus and decline in abundance of L. hoffmeisteri in the lower profundal indicate a deterioration of environmental status in the deepest part of the lake.

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The Diversity of Makrozoobenthos as Bio-Indicators of Water Quality of the River Kundur District Labuhanbatu

Budapest International Research and Critics Institute (BIRCI-Journal) Humanities and Social Sciences ◽

10.33258/birci.v4i1.1732 ◽

2021 ◽

Vol 4 (1) ◽

pp. 1027-1033

Author(s):

Winarti Winarti ◽

Arman Harahap

Keyword(s):

Total Abundance ◽

Chemical Parameters ◽

Observation Station ◽

Physical Chemical ◽

Physico Chemical ◽

Physical And Chemical Parameters ◽

The Individual ◽

Physical And Chemical ◽

Chemical Water

Macrozoobenthos used as a bioindicator of the waters, this happens because of the nature of the benthos which has mpergerakan low so it got a lot of influence from the environment. This study aims to determine the condition of the river Kundur with a view the community structure of macrozoobenthos which include: species composition, abundance, diversity, uniformity and dominance as well as the physical and chemical parameters of water as a paremeter supporters. Based on the results of observations, macrozoobenthos were found during the study in the river Kundur consists of 3 phylum, 4 classes, 17 family with 11 species. The composition of the class of macrozoobenthos in the whole of the observation station consists of a Gastropod (37%), Insecta (23%), Malacostraca (20%), Polychaeta (10%) dan Malacostraca (20%). The value of an abundance ranged from 325,7 - 3309,6 ind/m3. With the value of the total abundance at Station I which is equal to 3690,1 ind/m3, Station II 3723,1 ind/m3, Station III 3692,3 ind/m3 can be categorized diversity are light polluted with the value of the index of uniformity (E) that describes the spread of the individual tends to be uniform or relatively the same. While the condition of the physical-chemical parameters and the substrate bottom of the river Kundur in general has a range of relatively homogeneous, spread evenly throughout the observation stations and still be able to support life macrozoobenthos. To the results of measurements of the parameters of physico-chemical water and substrate in the river kundur in general has a range of relatively homogeneous in the whole observation stations and still be able to support the life of the macrozoobenthos.

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Hydrochemical Characterisation of Groundwater Quality: Merdja Plain (Tebessa Town, Algeria)

Civil Engineering Journal ◽

10.28991/cej-2020-03091473 ◽

2020 ◽

Vol 6 (2) ◽

pp. 318-325 ◽

Cited By ~ 11

Author(s):

Baazi Houria ◽

Kalla Mahdi ◽

Tebbi Fatima Zohra

Keyword(s):

Groundwater Quality ◽

Principal Component ◽

Anthropogenic Factors ◽

Agricultural Activity ◽

Chemical Parameters ◽

Physico Chemical ◽

High Concentrations ◽

Geological Formations

The objective of this work is to evaluate the physico-chemical quality of the groundwater of the Merdja plain and to determine the sources of mineralization. This quality is influenced by several environmental and anthropogenic factors such as geological context, climate, precipitation and interaction between groundwater and aquifers and human activities. A Principal Component Analysis (PCA) on samples taken from several wells spread over the entire Tebessa plain (Merdja) allowed us to detect two axes that explain 73.4% of the information. The first axis describes the variables related to mineralisation and the second one describes those related to agricultural activity. Multidimensional Positioning (MDS) confirmed the interaction of physico-chemical parameters between them and their influence on groundwater quality by highlighting three groups of wells according to their physico-chemical characteristics, particularly those containing high concentrations of nitrates. This contamination is mainly the result of spreading the fertilisers and wastes that are dumped into the plain without treatment. Salinization is the result of long-term interactions between groundwater and geological formations.

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INFLUENCE OF PACKAGING ON THE PHYSICO-CHEMICAL PARAMETERS AND ORGANOLEPTIC EVALUATION OF TABLE WINE

Известия вузов. Пищевая технология ◽

10.26297/0579-3009.2019.2-3.28 ◽

2019 ◽

Author(s):

Т.А. ДРОЗДОВА ◽

А.П. БИРЮКОВ ◽

Н.Ю. КАЧАЕВА ◽

Р.А. ДРОЗДОВ

Keyword(s):

Red Wine ◽

Chemical Characteristics ◽

Chemical Parameters ◽

Glass Bottle ◽

Organoleptic Evaluation ◽

Organoleptic Characteristics ◽

Physico Chemical ◽

Sweet Wines ◽

Physical And Chemical

Определены физико-химические показатели 12 образцов сухих и полусладких белых и красных столовых вин, выработанных одним предприятием и разлитых в стеклобутылку (СБ), бутылку из полиэтилентерефталата и упаковку «пакет в коробке» (ПВК) в феврале 2018 г. холодным и горячим способами, с целью установления влияния упаковки на изменение органолептического состава и физико-химических показателей столовых вин. Физико-химический анализ и дегустация представленных образцов столовых вин проведены в марте 2018 г. с использованием общепринятых методик. Установлено, что через месяц после розлива в упаковку все опытные образцы соответствовали требованиям действующей нормативной документации на данный вид продукции и обладали оптимальными физико-химическими показателями, кроме образца полусладкого красного вина в СБ, который на момент анализа был подвержен микробиологическому воздействию. Во всех исследованных образцах столовых вин обнаружен 1,2-пропиленгликоль, но его содержание не превышало допустимых норм. По итогам дегустации для сухих столовых вин рекомендован розлив в СБ, поскольку холодный розлив, применяемый при этом виде упаковки, практически не влияет на изменение органолептических характеристик продукта. Для полусладких вин рекомендуется горячий розлив, поскольку он препятствует забраживанию и задушке вина, а розлив в упаковку ПВК позволяет сохранять качество вина. Physico-chemical parameters of 12 samples of dry and semi-sweet white and red table wines produced by one enterprise and poured into a glass bottle (GB), a bottle of polyethylene terephthalate and a bag-in-box in February 2018 by cold and hot methods were determined in order to establish the influence of packaging on the change in the organoleptic composition and physico-chemical characteristics of table wines. Physical and chemical analysis and tasting of the presented samples of table wines were carried out in March 2018 using generally accepted methods. It was found that a month after filling in the package, all prototypes met the requirements of the current regulatory documentation for this type of product and had optimal physico-chemical parameters, except for the sample of semi-sweet red wine in the GB, which at the time of analysis was exposed to microbiological effects. In all the studied samples of table wines 1,2-propylene glycol was found, but its content did not exceed the permissible norms. Following the results of the tasting, bottling in the GB is recommended for dry table wines, since the cold bottling used in this type of packaging practically does not affect the change in the organoleptic characteristics of the product. For sweet wines it is recommended that hot-filling because it prevents fermenting and suffocating wine and bottling in bag-in-box allows to preserve the quality of the wine.

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Benthic Macroinvertebrates Diversity as Bioindicator of Water Quality of Some Rivers in East Kalimantan, Indonesia

International Journal of Ecology ◽

10.1155/2018/5129421 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 6

Author(s):

Fatmawati Patang ◽

Agoes Soegianto ◽

Sucipto Hariyanto

Keyword(s):

Water Quality ◽

Benthic Macroinvertebrates ◽

Water Quality Index ◽

Quality Index ◽

Average Score ◽

Chemical Parameters ◽

Melanoides Tuberculata ◽

East Kalimantan ◽

Physical Chemical

The objectives of this study were to clarify and evaluate the water quality of a number of rivers in East Kalimantan province of Indonesia. For this purpose, our study successfully utilized the benthic macroinvertebrates diversity as well as physical-chemical parameters of river’s water. For instance, based on the values of Average Score per Taxon (ASPT) and the National Sanitation Foundation-Water Quality Index (NSF-WQI), Karang Mumus River was categorized as polluted with Chironomus sp. and Melanoides tuberculata as codominant taxa. In addition, Jembayan River exhibited doubtful or moderate quality containing M. tuberculata and A. parvula as codominant taxa. However, Pampang River was found to be the cleanest river with Odonata and Baetidae families as codominant taxa.

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Assessment of Physical-Chemical Characteristics of Water and Sediments from a Brazilian Tropical Estuary: Status and Environmental Implications

The Scientific World JOURNAL ◽

10.1100/2012/676173 ◽

2012 ◽

Vol 2012 ◽

pp. 1-14 ◽

Cited By ~ 1

Author(s):

Madson de G. Pereira ◽

Marta V. A. S. de Andrade ◽

Vanessa C. Ornelas ◽

Raimunda A. N. de Almeida ◽

Maurício P. F. Fontes ◽

...

Keyword(s):

Northeastern Brazil ◽

Chemical Characteristics ◽

Tropical Estuary ◽

Total Organic Matter ◽

Environmental Standards ◽

Environmental Implications ◽

Environmental Preservation ◽

X Ray ◽

Physical Chemical

The environmental quality of the Jacuípe River's estuary (very important in northeastern Brazil) was assessed during 2007 and 2008. In water, concentrations (mg L−1) ofNO2-(<0.004 to 0.016),NO3-(0.01 to 0.33), solublePO43-(<0.02 to 0.22), dissolved oxygen (3.9 to 9.6), total contents (mg L−1) of Cd (<0.001), Cu (<0.01), Pb (<0.01), and Zn (<0.1), pH (5.60 to 8.00), and electrical conductivity (0.12 to 48.60 mS cm−1) agreed with environmental standards. In sediments, clay and total organic matter (%, m/m) varied, respectively, from 8.8 to 12.0 and from 1.1 to 8.8, while infrared, thermogravimetric profile, electronic micrograph, as well as X-Ray analyses showed desirable adsorptive characteristics. However, maximum exchangeable levels (mg kg−1) of Cd (1.3), Cu (44.6), Pb (35.7), and Zn (43.7) and their respective maximum pseudototal concentrations (mg kg−1): 19.4, 95.1, 68.2, and 30.3 were below the recommended limits. In this sense, it was possible to demonstrate good environmental preservation even with the growing number of industries and touristic activities in the evaluated estuarine area.

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