scholarly journals Quality of seeds from Leucaena species stored under ambient conditions

2017 ◽  
Vol 12 (4) ◽  
pp. 279-285 ◽  
Author(s):  
B. Wencomo Hilda ◽  
Ortíz R. ◽  
Caceres J.
Keyword(s):  
Ambient Conditions ◽  
Leucaena Species

scholarly journals Effect of Packaging Material, Storage Temperature and Duration on the Quality of Semi-Processed Adult House Cricket Meal

2017 ◽  
Vol 7 (1) ◽  
pp. 21 ◽  
Author(s):  
Edwin Kamau ◽  
Christopher Mutungi ◽  
John Kinyuru ◽  
Samuel Imathiu ◽  
C. Tanga ◽  
...  
Keyword(s):  
Storage Time ◽  
Storage Temperature ◽  
Color Change ◽  
Viable Count ◽  
Ambient Conditions ◽  
House Cricket ◽  
Product Quality And Safety ◽  
Conventional Foods ◽  
Penicillium Spp

Edible insects are widely consumed in different parts of the world and can serve as an alternative nutritional source to conventional foods. Nonetheless, little attention has been given to their quality and shelf life in different packages when exposed to different storage environments. In this study, the effect of storage temperature, duration and type of packaging on the storage stability of the adult house cricket meal was examined. The samples were boiled, solar dried, milled and packaged into polypropylene (PP), plastic (PL) and polyethylene (PL) packages. The samples were then stored for six months in refrigerated and ambient conditions where by changes in physical and biochemical attributes were monitored. Iodine values significantly decreased in all the packages while peroxide, p-anisidine and saponification values significantly increased. SFA, MUFA and PUFA contents reduced during storage although a higher tendency for MUFA and PUFA values was observed in the refrigerated samples. Total viable count (TVC) and yeast and molds counts significantly increased in storage. Three types of fungi; Aspergillus spp., Alternaria spp. and Penicillium spp. were isolated in all the packages. Overall color change steadily decreased with increase in storage time. Deterioration was higher in samples stored in ambient conditions than in refrigeration. The degree of deterioration in the two storage environments among the different packages was in the order; PP>PE>PL. Although the PL package outperformed the other packages it is recommended to carry out sensory analysis and avoid post-processing contamination that can adversely affect the product quality and safety during storage. 

scholarly journals Optimization and sensitivity analysis of fast ethanol assay in maize seeds

2019 ◽  
Vol 41 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Damrongvudhi Onwimol ◽  
Thunyapuk Rongsangchaicharean ◽  
Pitipong Thobunluepop ◽  
Tanapon Chaisan ◽  
Wanchai Chanprasert
Keyword(s):  
Quality Assessment ◽  
Ethanol Production ◽  
Seed Quality ◽  
Storage Conditions ◽  
Ambient Conditions ◽  
Maize Seed ◽  
Seed Deterioration ◽  
Maize Seeds ◽  
Hermetic Seal

Abstract: The evaluation of seed deterioration is very important to control the quality of the seeds stored. This study aimed to investigate the potential of fast ethanol assay for seed quality assessment of maize stored under different conditions. The first experiment was to determine the incubating temperature, incubating time, and amount of seed used in the assay. The results showed that the best protocol for the detection of headspace ethanol was incubation of 3 g of maize seed with 20% moisture content (wet basis) in a 20 mL gas chromatography vial at 70 °C for 1.5 h. The assay induced approximately 200-700 µg.L-1 of headspace ethanol, which was sufficient to identify seeds with different vigour levels. In the second experiment, the optimal conditions were used for quality assessment in aged maize seed stored for 12 months under different storage conditions. The increase in the ethanol production of stored maize seed under the controlled conditions (15 °C and 20% RH in the hermetic seal) was lower than under ambient conditions. The ethanol production levels of maize seed samples at the start of storage was significantly lesser than at six months storage (p < 0.05). The test limitations in deteriorated seed with different cultivars and ages will be discussed.

scholarly journals Effect of neem leaf and banana pulp extracts on shelf life and quality of mango (Mangifera indica L.)

2018 ◽  
Vol 16 (3) ◽  
pp. 343-350 ◽  
Author(s):  
Rabeya Akter Sarmin ◽  
Shamim Ahmed Kamal Uddin Khan ◽  
Kanij Fatema ◽  
Sabiha Sultana
Keyword(s):  
Shelf Life ◽  
Disease Severity ◽  
Leaf Extract ◽  
Disease Incidence ◽  
Mangifera Indica ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Ambient Conditions ◽  
Neem Leaf Extract

The study was carried out to minimize the postharvest loses and extend shelf life of mango fruitby maintaining physico-chemical properties. The variety selected for the study was “Amrapali”. Freshly harvested mango was treated with different concentrations (20% and 40%) of neem leaf and banana pulp extract alone or in combination. Untreated mango was considered as control. All treated and untreated mango was kept into paper cartons at room condition. The treated fruits showed significant differences in case of total soluble solids content, titratable acidity, vitamin C, disease incidence, disease severity and shelf life in comparison to control fruits. Among the treatments, T2 (neem leaf extract at 20%) and T5 (neem leaf extract 40% + banana pulp extract 40%) treatments showed longer shelf life (9.92 and 10.25 days, respectively), slower changes in color (score 2.77 and 2.93, respectively) and firmness (score 2.67 and 2.77, respectively); less disease severity (score 2.93 and 3.57, respectively), disease incidence (46.67% and 60.00%) and lower loss in weight (38.04% and 35.17%, respectively) at 9 DAT (Days after treatment). On the other hand, total soluble solid was highest in T3 (neem leaf extract 40%) treated fruitswith18.73% more Brix at 13 DAT in comparison to control and other treatments. The effectiveness of the treatment T5 (neem leaf extract 40% + banana pulp extract 40%) was meaningful which could be recommended for maintenance of postharvest quality of mango stored in ambient conditions. J. Bangladesh Agril. Univ. 16(3): 343–350, December 2018

Effect of solvent vapour annealing on bismuth triiodide film for photovoltaic applications and its optoelectronic properties

2020 ◽  
Vol 8 (35) ◽  
pp. 12173-12180
Author(s):  
Muthu Gomathy M. Pandian ◽  
Dhruba B. Khadka ◽  
Yasuhiro Shirai ◽  
Shodruz Umedov ◽  
Masatoshi Yanagida ◽  
...  
Keyword(s):  
Photovoltaic Device ◽  
Optoelectronic Properties ◽  
Ambient Conditions ◽  
Solvent Vapour ◽  
Effect Of Solvent ◽  
Photovoltaic Applications ◽  
Bismuth Triiodide

The annealing ambient conditions affect the morphology and optoelectronic quality of bismuth triiodide film and hence impact on the photovoltaic device parameters.

Buckling failure of compressive loaded hard layers in flexible devices

2004 ◽  
Vol 843 ◽  
Author(s):  
Piet C.P. Bouten ◽  
Marcel A.J. van Gils
Keyword(s):  
Composite Structures ◽  
Compressive Strain ◽  
Thin Layers ◽  
Ambient Conditions ◽  
Flexible Devices ◽  
Layer Composite ◽  
Base Polymer ◽  
Buckling Failure ◽  
Inorganic Layers

ABSTRACTSubstrate materials for flexible devices are multi-layer composite structures. On top of a base polymer functional inorganic layers such as permeation barriers and conductive layers are applied. Due to the thermal mismatch between polymer and inorganic layer, the layer is compressive loaded at ambient conditions. A characteristic failure mode, occurring with compressive loaded thin layers, is buckling failure. The interface between adjacent layers fails locally, and the thin top layer bends outwards. The buckles have a characteristic width and height. These sizes are used to analyse the compressive strain, present in the layer before failure, and the adhesion quality of the failed interface. A buckle map is introduced to guide this analysis.

Effects of ambient conditions on the quality of graphene synthesized by chemical vapor deposition

Vacuum ◽  
2012 ◽  
Vol 86 (12) ◽  
pp. 1867-1870 ◽  
Author(s):  
F.T. Si ◽  
X.W. Zhang ◽  
X. Liu ◽  
Z.G. Yin ◽  
S.G. Zhang ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Ambient Conditions

Reactions of reproductively photoresponsive versus unresponsive meadow voles to simulated winter conditions

1995 ◽  
Vol 73 (8) ◽  
pp. 1479-1488 ◽  
Author(s):  
F. H. Bronson ◽  
M. C. Kerbeshian
Keyword(s):  
Body Mass ◽  
Reproductive Potential ◽  
Day Length ◽  
Ambient Conditions ◽  
Meadow Voles ◽  
Winter Condition ◽  
Winter Conditions ◽  
Extreme Phenotypes ◽  
Harsh Conditions

At least some populations of meadow voles (Microtus pennsylvanicus) comprise individuals that vary greatly in the degree to which their reproduction can be controlled by day length. Some individuals respond to the short days of winter with complete gonadal inhibition, others are insensitive to this cue and thus have the capacity to reproduce opportunistically during the winter, and still others are intermediate in their responsiveness. The relative costs and benefits associated with some of the nonreproductive dimensions of these different strategies are explored. The two extreme phenotypes, reproductively photoresponsive and unresponsive individuals, were exposed in the laboratory to winter versus summer conditions, as defined by photoperiod, temperature, and quality of diet. This was done in cages that required the voles to leave their nests and subject themselves to ambient conditions in order to feed. The winter condition exerted a potent influence on body mass, body fat, food intake, nest building, pelage depth, and the amount and temporal pattern of feeding, as well as reproductive potential. The results suggest that the major nonreproductive advantage enjoyed by the photoregulated phenotype is a decrease in body mass and hence a decrease in required foraging time that anticipates harsh winter conditions. The opportunists also may lose mass in response to harsh conditions, but this is a direct and immediate response for which they may be poorly prepared.

scholarly journals EFFECTS OF 2% 02, 50% CO2, AND THE COMBINATION ON FLAVOR QUALITY AND FERMENTATION PRODUCTS OF STRAWBERRIES AND BLUEBERRIES

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 677e-677
Author(s):  
Diana Dostal Lange ◽  
Randolph M. Beaudry
Keyword(s):  
Storage Period ◽  
Taste Panel ◽  
Flavor Quality ◽  
Ambient Conditions ◽  
Fermentation Products ◽  
Fermentation Product ◽  
Highly Effective ◽  
Off Flavors ◽  
Very High

Low O2 and high CO2 concentrations can be used effectively to slow respiration and retard decay, but anaerobic and C02-injurious conditions must be avoided. The objective of this research was to: 1) determine the effects of low O2 and very high-C02 on flavor quality and accumulation of fermentation products. Strawberries and blueberries were stored in 2% O2/0% CO2, 20% 02/50% CO2, 2% O2/50% CO2, and 20% 02/0% CO2 for 0, 2, 4, 6, and 8 days at 20C. A taste panel evaluated the berries at the end of each storage period and again after 2 days under ambient conditions. Ethanol was the primary fermentation product that accumulated in response to low O2 and high CO2 concentrations. However, acetaldehyde was produced preferentially in response to elevated C02 levels. The flavor quality of the strawberries and blueberries was only acceptable for 2 days for treatments containing 50% CO2. The most intense off-flavors were detected in the 2% 02/50% CO2 and 20% O2/50% CO2 samples. 50% CO2 was highly effective in preventing decay, but this concentration was too high for acceptable flavor quality for storage periods greater than 2 days.

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