Influence of freeze-drying treatment on the chemical composition of peppers (Capsicum L.) from the Brazilian Amazonia region

2021 ◽  
Vol 38 ◽  
pp. 102220
Author(s):  
Jaime Paiva Lopes Aguiar ◽  
Edson Pablo da Silva ◽  
Aline Priscilla Gomes da Silva ◽  
William Gustavo Sganzerla ◽  
Jianbo Xiao ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Freeze Drying ◽  
Brazilian Amazonia ◽  
Drying Treatment

scholarly journals Nutritional comparison between dried and ensiled indigofera, papaya and moringa leaves

2019 ◽  
Vol 44 (1) ◽  
pp. 77 ◽  
Author(s):  
A. Jayanegara ◽  
V. Ardani ◽  
H. A. Sukria
Keyword(s):  
Chemical Composition ◽  
Room Temperature ◽  
Considerable Extent ◽  
In Vitro Fermentation ◽  
Silage Fermentation ◽  
High Ammonia ◽  
Drying Treatment ◽  
In Vitro Rumen Fermentation

The objective of this experiment was to evaluate chemical composition, in vitro fermentation and digestibility of dried and ensiled indigofera, papaya and moringa leaves. The leaves were subjected to artificial drying in an oven at 60oC for 24 h and ensiling treatment for 30 d under room temperature. Dried and ensiled samples were determined for chemical composition, silage fermentation characteristics and in vitro rumen fermentation and digestibility. The experimental design was a factorial design 3 × 2 in which the first factor was different leaves (indigofera, papaya and moringa) and the second factor was conservation treatments (drying and ensiling). Determination of chemical composition was performed in duplicate whereas in vitro evaluation was conducted in three replicates. Results showed that ensiling treatment decreased CP contents of indigofera and moringa but not papaya leaves. Ensiling also decreased NDF and NDICP contents of all experimental leaves in comparison to drying treatment. The pH of all silages was high and they were characterized with high ammonia concentrations. Ensiled indigofera tended to have lower IVDMD and IVOMD as compared to dried indigofera (P<0.1). It can be concluded that ensiling of high protein forages leads to considerable extent of proteolysis.

scholarly journals Proximate Chemical Composition of Dried Shrimp and Tilapia Waste Bioflocs Produced by Two Drying Methods

2021 ◽  
Vol 9 (2) ◽  
pp. 193
Author(s):  
Tarq Binalshikh-Abubkr ◽  
Marlia M. Hanafiah ◽  
Simon Kumar Das
Keyword(s):  
Chemical Composition ◽  
Freeze Drying ◽  
Drying Methods ◽  
Shrimp Waste ◽  
Drying Method ◽  
Iron Copper ◽  
Nutrient Value ◽  
Nitrogen Free Extract ◽  
Freeze Dried ◽  
Proximate Chemical Composition

The effects of two waste sources, red hybrid tilapia (Oreochromis sp.) and whiteleg shrimp (Litopenaeus vannamei), and two drying methods (freeze-drying and oven-drying) on the proximate chemical composition of bioflocs were investigated. In total, four kinds of experimentally treated bioflocs were compared to identify the best waste source and drying method to produce biofloc of an acceptable nutrient value: freeze-dried shrimp biofloc (FDSBF), oven-dried shrimp biofloc (ODSBF), freeze-dried tilapia biofloc (FDTBF), and oven-dried tilapia biofloc (ODTBF). The protein, lipid, ash, fiber, total nitrogen free extract (NFE), and energy contents of the dried bioflocs ranged from 12.12 to 24.09 g/100 g, 0.35 to 0.92 g/100 g, 42.45 to 61.01 g/100 g, 7.43 to 17.11 g/100 g, 16.45 to 18.59 g/100 g, and 0.99 to 1.94 Kcal g−1, respectively. Statistically, there were significant differences within the means of the two biofloc sources in terms of their proximate compositions (p < 0.05). The average values between the drying methods for protein, lipid, total NFE, and energy were also significantly different, while no significant differences (p > 0.05) were recorded for ash and fiber. Amino acids (AAs) were higher in FDTBF, followed by ODTBF. The mineral profiles showed that phosphorous, potassium, manganese, selenium, and copper were higher in the tilapia waste bioflocs, while calcium, zinc, iron, copper, chromium, and cobalt were higher in the shrimp waste bioflocs. Although the statistical analysis showed that the shrimp waste bioflocs had higher levels of lipid, fiber, total NFE, and minerals, the tilapia waste bioflocs contained higher levels of potential AAs, energy, and protein, which are regarded as expensive ingredients in aquaculture feeding. This study indicates that biofloc derived from tilapia waste can be regarded as a more suitable source of biofloc meal (in terms of protein, ash, energy, and AAs) than biofloc derived from shrimp waste. Our findings also suggest that freeze-drying is a more effective drying method for drying biofloc, as it efficiently maintains nutritional quality.

Effects of oven- or freeze-drying on chemical composition and NIR spectra of pasture silage

1999 ◽  
Vol 80 (3-4) ◽  
pp. 309-319 ◽  
Author(s):  
Daniel Alomar ◽  
Rita Fuchslocher ◽  
Sergio Stockebrand
Keyword(s):  
Chemical Composition ◽  
Freeze Drying

Optimization of an alcoholic-alkaline freeze-drying treatment for granular cold-water swelling starches

2016 ◽  
Vol 69 (5-6) ◽  
pp. 1600198 ◽  
Author(s):  
Bo Zhu ◽  
Shuangyan Wu ◽  
Jianli Liu ◽  
Weidong Gao
Keyword(s):  
Freeze Drying ◽  
Cold Water ◽  
Drying Treatment ◽  
Water Swelling

scholarly journals Effect of Ultrasonic Frequency on Thickener Performance

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Gongcheng Li ◽  
Shulong Liu ◽  
Zengsheng Wen ◽  
Guolei Liu ◽  
Yu Cui ◽  
...  
Keyword(s):  
Freeze Drying ◽  
Ultrasonic Frequency ◽  
Sem Images ◽  
Copper Mine Tailings ◽  
Ultrasonic Equipment ◽  
Average Fraction ◽  
Drying Treatment ◽  
Average Size ◽  
Gravity Thickening ◽  
The Relationship

Gravity thickening is an important aspect to solve numerous environmental and safety problems that were created by tailings discharging at low solid concentrations. Furthermore, in order to efficiently facilitate the separation of released water and solid sediments, a continuous thickening system with ultrasonic equipment has been used to investigate the thickening performance of copper-mine tailings under different ultrasonic frequencies (16 kHz, 20 kHz, 22 kHz, 25 kHz, and 28 kHz). After freeze-drying treatment, the underflow samples are imaged using the scanning electron microscope (SEM); then, the structure of floc or aggregates in the SEM images is quantifiably analyzed using the software of Image J. Results show that the underflow concentration increases as the ultrasonic frequency increases and decreases afterwards. A linear logarithmic function can explain the relationship between underflow concentration and run time at a certain ultrasonic. The underflow concentration is maximized at 64.47 wt. % when the ultrasonic frequency is 22 kHz. Based on the analysis on the microstructure of underflow samples, the minimum pore average size and pore average fraction are obtained when the ultrasonic frequency is 22 kHz, implying that 22 kHz is the optimum ultrasonic frequency combining the results of the underflow concentration.

Effects of Freeze-Drying Treatment on the Aromatic Profile of Tuber spp. Truffles

2012 ◽  
Vol 38 (3) ◽  
pp. 768-773 ◽  
Author(s):  
Irene Palacios ◽  
Eva Guillamón ◽  
Ana García-Lafuente ◽  
Ana Villares
Keyword(s):  
Freeze Drying ◽  
Drying Treatment ◽  
Tuber Spp

scholarly journals Impact of Inorganic Metal (Ag, Cu) Nanoparticles on the Quality of Seeds and Dried Rapeseed Sprouts

Agriculture ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 106
Author(s):  
Magdalena Kachel ◽  
Stanisław Rudy ◽  
Marta Krajewska ◽  
Mariusz Rudy
Keyword(s):  
Silver Nanoparticles ◽  
Chemical Composition ◽  
Physical Properties ◽  
Freeze Drying ◽  
Cu Nanoparticles ◽  
Flavonoid Content ◽  
Winter Rape ◽  
Drying Temperature ◽  
The Impact

The present study focuses on the impact of copper and silver nanoparticles on the chemical composition and physical properties of rapeseeds and rape sprouts. The seeds and sprouts were obtained from winter rape grown in a three-year cultivation (2018–2020) treated with silver (AgNP) and copper (CuNP) nanoparticles. In addition, the effect of the freeze-drying temperature (20; 40; 60 °C) on selected properties of the sprouts was studied. Spraying growing plants with nanoparticles resulted, in most cases, and depending on the year, in a reduction in the mass of seeds (MTS) by 9.5% (single nanoparticles spray ×1 CuNP in 2018), an increase in the fat content (by 8.80% for ×1 CuNP in 2018), a reduction in the protein content (by 12.93% for ×1 CuNP in 2018) and flavonoid content (by up to 58% for ×1 AgNP and CuNP in 2018), as well as increase in the glucosinolates content by 25% (for double nanoparticles spray ×2 AgNP in 2019). For the sprouts obtained from the rapeseeds, in most cases, a decrease in the content of flavonoids was observed (26.68% for ×1 AgNP; 20 °C in 2018), depending on the year of cultivation, the nanoparticles used, and the drying temperature. The obtained results remain inconclusive, which encourages the authors to undertake further research.

Effect of roughage species consumed on fecal alkane recovery in sheep, and effect of sample drying treatment on alkane concentrations

2006 ◽  
Vol 46 (7) ◽  
pp. 771 ◽  
Author(s):  
C. Elwert ◽  
H. Dove ◽  
M. Rodehutscord
Keyword(s):  
Freeze Drying ◽  
Trifolium Subterraneum ◽  
Single Species ◽  
Carbon Chain ◽  
Carbon Chain Length ◽  
Fixed Amount ◽  
Fecal Samples ◽  
Oven Drying ◽  
Fecal Recovery ◽  
Drying Treatment

The effect of roughage species on fecal alkane recoveries (the proportion of ingested alkane recovered in feces) and the effect of sample drying treatment on alkane concentrations in samples of dietary components and feces were studied in 2 experiments conducted with sheep. In experiment 1, 6 single-species diets (2 different batches of lucerne (Medicago sativa) hay, Phalaris aquatica hay, oaten straw, wheaten straw, Trifolium subterraneum hay) were fed to 6 animals each in a crossover design. A further 3 animals were fed a mixed diet of Trifolium subterraneum and beeswax-labelled cottonseed meal. In experiment 2, fecal samples from sheep fed 4 different mixtures of pelleted lucerne and ground wheat grain (lucerne : wheat 360 : 270 g/day; 360 : 450 g/day; 600 : 270 g/day; 600 : 450 g/day; 4 animals per diet), a fixed amount (270 g/day) of which was labelled with beeswax, were dried in 1 of 3 ways: freeze drying, oven drying at 65°C for 48 h or oven drying at 105°C for 24 h. Differences in fecal alkane recoveries between various roughage species were not statistically significant, due in part to high between-animal variation in recovery. The fecal recovery of odd-chain alkanes increased in a curvilinear manner with carbon-chain length. The fecal recoveries of even-chain alkanes were highly variable, due to their low concentrations, and also differed from those expected given the recoveries of the adjacent odd-chain alkanes. The results indicate that oven drying fecal samples at 65°C for 48 h could replace freeze drying, but drying at 105°C significantly reduced fecal alkane concentrations. Further studies are necessary to investigate the effect of drying treatment on the alkane concentration in fresh roughages.

The water content of the seeds of peas, soya beans, linseed, grass, onion and carrot as a function of temperature and humidity of the atmosphere

1948 ◽  
Vol 38 (1) ◽  
pp. 81-83 ◽  
Author(s):  
R. Gane
Keyword(s):  
Chemical Composition ◽  
Moisture Content ◽  
Water Content ◽  
The Other ◽  
Surrounding Atmosphere ◽  
Other Hand ◽  
Temperature And Humidity ◽  
Drying Treatment ◽  
Final Water Content ◽  
Enclosed Space

SUMMARYMoisture content and temperature are of first importance in the storage of seeds. Seeds are usually stored in porous containers like sacks and paper bags, and their water content fluctuates with the humidity of the surrounding atmosphere. In sealed chambers, on the other hand, the humidity of the atmosphere will be determined by the water content of the seeds and, with different kinds of seeds in an enclosed space, an exchange of water will occur until equilibrium has been reached. This does not mean, however, that different kinds of seeds, or even different samples of the same kind will have exactly the same final water content, since the water content/humidity relations are affected by differences in structure, chemical composition and previous drying treatment; it is permissible, however, for practical purposes, to ignore the slight differences which occur between samples of the same kind of seed.

scholarly journals Effect of freeze-drying and production process on the chemical composition and fatty acids profile of avocado pulp

2014 ◽  
Vol 41 (4) ◽  
pp. 404-411 ◽  
Author(s):  
Ma Claudia Castañeda-Saucedo ◽  
Elia Herminia Valdés-Miramontes ◽  
Ernesto Tapia-Campos ◽  
Adriana Delgado-Alvarado ◽  
Ana Cecilia Bernardino-García ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Production Process ◽  
Freeze Drying ◽  
Fatty Acids Profile
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