scholarly journals Qualidade sanitária de grãos de soja avariados por percevejo na lavoura e armazenados em diferentes condições

2021 ◽  
Vol 1 (54) ◽  
pp. 148
Author(s):  
Jaqueline Ferreira Vieira Bessa ◽  
Osvaldo Resende ◽  
Rayr Rodrigues Lima ◽  
Maria Aparecida Da Silva Lopes ◽  
Carolina De Freitas Fófano Garcia ◽  
...  
Keyword(s):  
Moisture Content ◽  
Water Activity ◽  
Storage Temperature ◽  
Effect Of Temperature ◽  
Stink Bug ◽  
Moisture Contents ◽  
Randomized Design ◽  
Set Up ◽  
Storage Temperatures

<p><span class="fontstyle0">The objective of this work was to evaluate, throughout the storage, the effect of temperature and moisture content on soybean grains with high damage caused by stink bug in the crop, through sanitary quality. Two moisture contents (11.75 and 13.84% wet base) were used and the grains were packed in high density polyethylene packages (HDPE), stored in four BOD’s, regulated at temperatures of 20, 25, 30 and 35 °C and evaluated every two months by analyzing the water activity, grain sanity and the occurrence index. The experiment was set up in a completely randomized design and in a 2 x 4 x 4 factorial scheme, with two moisture contents, four storage temperatures and four evaluation times. The moisture content and the temperatures throughout the storage influence the sanitary quality of the soybean grains damaged by stink bug. The higher the moisture content and the storage temperature, the higher the water activity of soybeans damaged by bedbug, and the increase in the occurrence of fungi</span> <br /><br /></p>

scholarly journals Effects of Moisture Content and Storage Temperatures on Germination of Quercus macrocarpa Acorns

1987 ◽  
Vol 5 (1) ◽  
pp. 22-24
Author(s):  
W.R. Schroeder ◽  
D.S. Walker
Keyword(s):  
Moisture Content ◽  
Storage Temperature ◽  
Quercus Macrocarpa ◽  
Moisture Contents ◽  
Bur Oak ◽  
And Storage ◽  
Storage Temperatures ◽  
Temperature Storage

Viability of bur oak Quercus macrocarpa Michx. acorns was determined after 6 months storage at − 2°C (28°F), 1°C (34°F) and 5°C (41°F) and moisture contents of either 17%, 27%, 37% or 44%. Viability was significantly affected by moisture content with optimum germination occurring for acorns stored at 44% moisture. Optimum storage temperature was 1°C (34°F) although acorns tolerated subfreezing temperatures to − 2°C (28°F) with little loss in viability. Acorn moisture content had a greater effect on viability than storage temperature. Storage for up to 6 months had no detrimental effects on germination of bur oak acorns.

scholarly journals Physiological performance of Coccoloba gigantifolia seeds subjected to desiccation and storage

2021 ◽  
Vol 43 ◽  
Author(s):  
Sidney Alberto do Nascimento Ferreira ◽  
Daniel Felipe de Oliveira Gentil ◽  
Carlos Alberto Cid Ferreira
Keyword(s):  
Moisture Content ◽  
Marked Reduction ◽  
Control Treatment ◽  
Randomized Design ◽  
Physiological Quality ◽  
Completely Randomized Design ◽  
And Storage ◽  
Storage Temperatures ◽  
Water Contents

Abstract: Coccoloba gigantifolia is recently described species, with an area of restricted occurrence and threatened with extinction, whose great ornamental potential is due to the size of its leaves and the architecture of the plant. The objective of this study was to evaluate the viability of its seeds under different water contents and storage temperatures, through two experiments. The first one used a completely randomized design (CRD) with six treatments (drying periods: 0, 1, 2, 3, 4 and 5 days) and four replications. The second experiment used a CRD in a 2 (storage temperatures: 8.0 ± 1.2 and 19.5 ± 0.7 °C) x 3 (storage periods: 1, 2 and 4 months) factorial scheme, in addition to a control treatment (without storage), with four replications. The seeds have a recalcitrant behavior, as they are sensitive to desiccation, with a marked reduction in viability with moisture content below 19.5%. Storage at temperatures of 8.0 and 19.5 °C did not maintain the physiological quality of the seeds, with 25.2% water, and the largest losses were found at a temperature of 8.0 oC.

Motilitas dan Vabilitas Spermatozoa Ayam Kampung pada Suhu 5°C Menggunakan Pengencer dan Lama Simpan yang Berbeda

2018 ◽  
Vol 5 (2) ◽  
pp. 102
Author(s):  
Enike Dwi Kusumawati ◽  
Selvinus Lawu Woli ◽  
Aju Tjatur Nugroho Krisnaningsih ◽  
Waluyo Edi Susanto ◽  
Syam Rahadi
Keyword(s):  
Data Analysis ◽  
Storage Temperature ◽  
Coconut Water ◽  
Laboratory Research ◽  
Ringer Lactate ◽  
Randomized Design ◽  
Native Chicken ◽  
Lactate Solution ◽  
Better Than

ABSTRAKPenelitian ini dilakukan untuk mengetahui motilitas dan viabilitas spermatozoa ayam kampung pada suhu 5oC menggunakan pengencer dan lama simpan yang berbeda. Metode yang digunakan dalam penelitian ini adalah penelitian laboratorium menggunakan Rancangan Acak Lengkap (RAL) Faktorial dengan pengencer ringer lactat solution, air kelapa dan tanpa pengencer serta lama simpan 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, masing-masing diulang 10 kali. Variabel yang diamati yaitu motilitas dan viabilitas spermatozoa. Analisa data yang digunakan adalah analisis varian. Hasil analisis data menunjukkan bahwa motilitas dan viabilitas spermatozoa menggunakan pengencer ringer lactat solution lebih tinggi (P<0,01) serta dapat bertahan sampai lama simpan 24 jam dibandingkan air kelapa dan tanpa pengencer. Adapun nilai motilitas ringer lactat solution, air kelapa dan tanpa pengencer pada lama simpan 24 jam masing-masing sebesar 43,5±17,17%; 8±4,83%; 6,5±2,4%, sedangkan nilai viabilitasnya sebesar 83,2±7,25%; 64,6±3,20%; dan 63,1±2,33%. Kesimpulan dari hasil penelitian ini adalah ringer lactat solution lebih baik dibandingkan air kelapa dan tanpa pengencer dalam mempertahankan kualitas semen ayam kampung pada suhu simpan 5oC sampai lama simpan 24 jam.Kata Kunci : air kelapa, ayam kampung, motilitas, spermatozoa, viabilitas  ABSTRACTThis study was conducted to determine the motility and viability of spermatozoa of Native chickens at 5oC using different diluents and time storage. The method used in this study was laboratory research using Factorial Completely Randomized Design with ringer lactate solution, coconut water and without diluent at 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30 hours of time storage each repeated 10 times. The variables observed were motility and viability of sperm. Data analysis used is variance analysis. The results of data analysis showed that the motility and viability of spermatozoa using ringer lactate solution diluents was higher (P <0.05) than coconut water and without diluents. The motility values of ringer lactat solution, coconut water and without diluents were 43,5±17,17%; 8±4,83%; 6,5±2,4% respectively, while the viability values were 83,2±7,25%; 64,6±3,20% and 63,1±2,33%. The conclusion of this study is that ringer lactat solution is better than coconut water an without diluents in maintaining the quality of Native chicken semen at a storage temperature of 5oC until 24 hours.Keywords: coconut water, motility, native chicken, sperm, viability

scholarly journals Application of Trichoderma harzianum on the physiological quality of cowpea seeds

2021 ◽  
pp. 643-648
Author(s):  
Marcelo Laranjeira Pimentel ◽  
Henara Valéria Miranda Castro ◽  
Mike Kirixi Munduruku ◽  
Larissa Conceição Cunha Ponte ◽  
Deyvielen Maria Ramos Alves ◽  
...  
Keyword(s):  
Trichoderma Harzianum ◽  
Seed Treatment ◽  
Germination Percentage ◽  
Hypocotyl Length ◽  
Cowpea Seeds ◽  
Randomized Design ◽  
Germination Speed ◽  
Physiological Quality ◽  
Set Up

The use of fungi in seed treatment can improve the plant's physiological characteristics. The aim of this study was to evaluate the influence of the use of Trichoderma harzianum on the physiological quality of bean seeds. The experiment was set up and conducted in the forest seed laboratory of the Federal University of Western Para, in a randomized design, using 4 procedures on the basis of a colony forming unit (CFU): T1 (0 CFU), T2 (4 x 109 CFU), T3 (8 x 109 CFU) and T4 (12 x 109 CFU), with 5 repetitions. Germination percentage (G%), germination speed index (GSI), hypocotyl length (HL) and radicle length (RL) were evaluated as variables. The data were analyzed by variance analysis and the averages were compared using the Tukey test (p≤0.05), in addition to the regression analysis, using the Minitab© version 18 statistical software. There were differences between the germination percentage tests, in which T2 obtained 100% of germinated seeds, for GSI it was observed that T2 and T3 were equal and superior to the other treatments, while for RL T1 and T2 obtained the best results, however, for HL there were no statistical differences between treatments. T2 was more efficient in the physiological quality of seeds to germination percentage and germination speed index

scholarly journals Quality of fresh-cut avocado (Persea americana Mill.) stored under different temperatures

2009 ◽  
Vol 33 (4) ◽  
pp. 1095-1102 ◽  
Author(s):  
Ana Carla Marques Pinheiro ◽  
Eduardo Valério de Barros Vilas Boas ◽  
Lucas Carvalho e Silva ◽  
Alessandra de Paiva Alves ◽  
Marcelo La Selva ◽  
...  
Keyword(s):  
Persea Americana ◽  
Sodium Hypochlorite Solution ◽  
Rigid Plastic ◽  
Randomized Design ◽  
Pvc Film ◽  
Different Temperatures ◽  
Fresh Cut ◽  
Hedonic Scale ◽  
Storage Temperatures

The goal of this work was to evaluate the effect of different storage temperatures on the quality maintenance of fresh-cut 'Fortuna' avocado (Persea americana Mill.). The fruit was selected, washed and sanitized with sodium hypochlorite solution (190 ppm total residual chlorinee) for 15 minutes. After that, the tip was cut and the fruit was also cut in halves, peeled and the pit removed, manually. Then the halves were immersed in 0.5% calcium chlorite + 0.5% cysteine solution for 2 minutes, to avoid darkening and packed in rigid plastic covered with 20 micrometer thick plastic wrap (PVC film) with a permeability to O2, CO2 and water vapor of 15,000, 80,000 and 390 cm³/m²/day, respectively. The product was stored under 3 different temperatures 0, 5, 10ºC and evaluated at 5 different storege periods of 0, 2, 3, 5 and 6 days, in a randomized design in a 3x5 factorial. The storage of fresh-cut avocado at 5ºC is the best alternative because it determines better maintenance of quality of the avocado. These presented lower darkening of pulp, better scores for appearance and acceptability, lower softening and polyphenoloxidase activity, in comparison to those stored at 0 and 10ºC. The fresh-cut avocados stored at 5ºC presented a shelf life of 5 days, based, mainly on, appearance, score 7.3, sited between the concepts "like moderately" and "like very much" on a hedonic scale of 9 points and 86% of acceptability, at the end of 5 days of storage.

scholarly journals Post-harvest quality of Campomanesia adamantium (Cambess.) O. Berg. in function of storage temperature

2020 ◽  
Vol 43 ◽  
pp. e48979
Author(s):  
Marília Assis do Santos ◽  
Alan Carlos Costa ◽  
Clarice Aparecida Megguer ◽  
Júlien da Silva Lima ◽  
Yasmin Giovanna Santos Carvalho ◽  
...  
Keyword(s):  
Visual Analysis ◽  
Storage Temperature ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Maturity Stage ◽  
Post Harvest ◽  
Fruit Species ◽  
Randomized Design ◽  
Soluble Solid

Brazil has a large variety of native and exotic fruit species, including the gabiroba, which can be sources of income for the population. The objective of this study was to evaluate the post-harvest behavior of gabiroba fruit by maturity stage and storage temperature. The fruits were divided into two lots and stored at temperatures of 6, 12, 24 and 30°C. The first batch was used for the physical and chemical analysis of acidity, soluble solids, firmness, percentage of green color, and visual analysis; this batch was composed of green and yellow-green fruit. The second lot was intended for breath analysis, composed of green, yellow-green, and yellow fruits. The experiment was conducted in a completely randomized design with five replications. Data were analyzed using descriptive statistics. Considering the evaluated characteristics, the gabiroba soluble solid/titratable acidity ratio values should be approximately 4.0 for the fruits to be considered acceptable for consumption. For the preservation of the post-harvest quality of gabiroba, it is indicated that the harvest is carried out at the green stage of maturation and that they are stored at a temperature of 6°C. The highest respiratory rates were observed in fruits harvested at the yellow stage, not being recommended its storage.

Modeling the Effect of Water Activity, pH, and Temperature on the Probability of Enterotoxin A Production by Staphylococcus aureus

2016 ◽  
Vol 79 (1) ◽  
pp. 148-152 ◽  
Author(s):  
TIAN DING ◽  
YAN-YAN YU ◽  
CHENG-AN HWANG ◽  
QING-LI DONG ◽  
SHI-GUO CHEN ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Water Activity ◽  
Storage Temperature ◽  
Probability Model ◽  
Toxin Production ◽  
Factors Affecting ◽  
Model Predictions ◽  
And Storage ◽  
Storage Temperatures ◽  
Good Agreement

ABSTRACT The objectives of this study were to develop a probability model of Staphylococcus aureus enterotoxin A (SEA) production as affected by water activity (aw), pH, and temperature in broth and assess its applicability for milk. The probability of SEA production was assessed in tryptic soy broth using 24 combinations of aw (0.86 to 0.99), pH (5.0 to 7.0), and storage temperature (10 to 30°C). The observed probabilities were fitted with a logistic regression to develop a probability model. The model had a concordant value of 97.5% and concordant index of 0.98, indicating that the model satisfactorily describes the probability of SEA production. The model showed that aw, pH, and temperature were significant factors affecting the probability of toxin production. The model predictions were in good agreement with the observed values obtained from milk. The model may help manufacturers in selecting product pH and aw and storage temperatures to prevent SEA production.

scholarly journals Improving the Quality of Turkey Meat via Storage Temperature, Packaging Atmosphere, and Oregano (Origanum vulgare) Essential Oil Addition

Agriculture ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 463
Author(s):  
Samir A. Mahgoub ◽  
Mohamed E. Abd El-Hack ◽  
Zohair S. Mulla ◽  
Waleed R. El-Ghareeb ◽  
Ayman E. Taha ◽  
...  
Keyword(s):  
Essential Oil ◽  
Storage Temperature ◽  
Modified Atmosphere Packaging ◽  
Modern World ◽  
Origanum Vulgare ◽  
Oregano Essential Oil ◽  
E Coli ◽  
Turkey Meat ◽  
Storage Temperatures

The provision of plentiful good-quality food is a primary issue in the modern world. This work was planned to study the influence of packaging atmosphere and oregano (Origanum vulgare) essential oil addition [(vacuum packaging: T1 or modified atmosphere packaging or T2 (CO2/N2 = 4:6) or T3, T2 with oregano essential oil (T2 + EO)] under various storage temperatures (0, 5, 10, and 15 °C) on the control of survival of Escherichia coli O157:H7 and associated spoilage flora in sliced smoked turkey meat. The pathogen increased by only <1.0 log colony-forming unit (CFU)/g under all packaging and temperature combinations. Moreover, T1, T2, and T3 exerted practically similar inhibitory activity against the pathogen and dominating bacteria, with a relatively low growth of E. coli O157:H7 in sliced smoked turkey during the shelf life under all storage regimes compared to the control. However, the pathogen survival was highest on the sliced smoked turkey under T1, decreasing by only 0.67, 0.74, 0.63, and 1.30 log CFU/g within 37 days if kept at 0, 5, 10, and 15 °C, respectively. Under T2 and the same condition, E. coli O157:H7 in the product declined by only 0.31, 0.50, 0.72, and 1.10 log CFU/g within 37 days of storage, respectively. In the T3 samples, the pathogen was reduced by only 0.33, 0.67, 1.72, and 3.46 log CFU/g through 37 days of storage, respectively. Under T3 were E. coli O157:H7 populations in smoked turkey eliminated (negative by enrichment) under all conditions (after 129, 95, 95, and 43 days maintained at 0, 5, 10, and 15 °C, respectively) compared with other packaging temperature combinations. Thus, T3 contributed to developing ready-to-eat smoked turkey with enhanced product quality and eliminating the pathogen.

scholarly journals OVIPOSITION PREFERENCE AND BIOLOGY OF FRUIT FLIES (DIPTERA: TEPHRITIDAE) ON GRAPE VINE GENOTYPES

2018 ◽  
Vol 31 (4) ◽  
pp. 850-859 ◽  
Author(s):  
SABRINA CRISTINA CORRÊA ◽  
CLEITON LUIZ WILLE ◽  
HADSON HOFFER ◽  
MARI INÊS CARISSIMI BOFF ◽  
CLÁUDIO ROBERTO FRANCO
Keyword(s):  
Oviposition Preference ◽  
Fruit Flies ◽  
Choice Test ◽  
Transparent Plastic ◽  
Grape Vine ◽  
Grape Berries ◽  
Randomized Design ◽  
Set Up ◽  
Plastic Containers

ABSTRACT Grape orchards are highly affected by oviposition of fruit flies on grape berries, which compromises the productivity and quality of the grapes. The goal of this study was to evaluate the susceptibility of American, European, and hybrid grape genotypes to Anastrepha fraterculus and Ceratitis capitata (Diptera: Tephritidae) under laboratory conditions (25 ± 2ºC, 60 ± 10% RH, and 14-hour photophase). The assays were conducted by evaluating oviposition preference through choice and no-choice (antibiosis) tests. The choice test was set up using circular arenas (diameter: 300 mm) with 10 grapes per genotype. The no-choice test was set up using 150 grapes per genotype which were placed inside plastic boxes (417 x 297 x 289 mm). After exposure of the grapes to one or two couples of fruit flies per genotype in choice and no-choice tests, respectively, the grapes were transferred to transparent plastic containers (750 mL). The number of eggs per grape and its viability were evaluated. The no-choice test also evaluated the biological cycle of the fruit flies. The assays were conducted in a completely randomized design with 15 replicates. The most preferred grapes for oviposition by A. fraterculus were Cabernet Sauvignon, Niagara Rosada, and BRS Cora, while C. capitata mainly preferred Isabel Precoce grapes. We observed the complete development of fruit flies in the Moscato Embrapa grapes, but this only occurred with C. capitata. All genotypes evaluated were considered susceptible to A. fraterculus and C. capitata. However, the fruit flies expressed differences in preference for oviposition and host quality.

scholarly journals Conservation of Alstroemeria cut flowers stored under refrigeration

2020 ◽  
Vol 43 ◽  
pp. e50016
Author(s):  
Vanessa Cury Galati ◽  
Ana Carolina Corrêa Muniz ◽  
João Emmauel Ribeiro Guimarães ◽  
Claudia Machado Fabrino Mattiuz ◽  
Ben Hur Mattiuz
Keyword(s):  
Storage Period ◽  
Postharvest Quality ◽  
Cut Flowers ◽  
Floral Longevity ◽  
Randomized Design ◽  
Significant Difference ◽  
Relative Water ◽  
Peroxidase Enzymes ◽  
Storage Temperatures

Alstroemeria flowers have shown great importance in the world trade of cut flowers due mainly to its beauty and wide variety of colors. However, the durability of its inflorescences is usually hampered by the rapid yellowing of the leaves, which impairs their decorative quality. Cut flowers require the use of technologies to improve postharvest quality and floral longevity. This research aimed to study the postharvest conservation of inflorescences of Alstroemeria cv. Ajax at different storage temperatures. Floral stems were placed in containers with distilled water and stored at four temperatures (4, 8, 12, and 22ºC) for 12 days. The following analyses were performed: fresh mass variation, respiratory activity, relative water content, soluble and reducing carbohydrate contents, polyphenol-oxidase and peroxidase enzymes, pigments (anthocyanin and carotenoids), and longevity. The experiment was conducted in a completely randomized design, the results were submitted to analysis of variance (ANOVA), and the effect of treatments submitted to F-test. Significant differences were compared using the least significant difference (LSD) at 95% confidence interval (p ≤ 0. 05). The temperatures of 8 and 12ºC were effective in maintaining the postharvest quality of inflorescences during storage period, as they remained turgid due to transpiration reduction caused by low temperatures, and longevity reaching 46 and 22 days, respectively.

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