scholarly journals Comparison of Dry Matter Loss Rates from Static and Dynamic Grain Respiration Measurement Systems for Soybeans at 18% Moisture Content and 30°C

2021 ◽  
Vol 64 (3) ◽  
pp. 893-903
Author(s):  
Ana B. Gatsakos ◽  
Lucas R. Trevisan ◽  
Kaneeka Sood ◽  
Mary-Grace C. Danao ◽  
Kent D. Rausch ◽  
...  
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Storage Time ◽  
Storage Conditions ◽  
List Type ◽  
Static System ◽  
Time Data ◽  
Measurement Systems ◽  
Dry Matter Loss ◽  
Loss Rates

HighlightsDesign, description, and comparison of static (S) and dynamic (D) grain respiration measurement systems (GRMS).No differences were detected between dry matter loss rates (vDML) from S-GRMS and D-GRMS for soybeans at 18% moisture content and 30°C stored for 20 d.Literature reports variable vDML estimates for soybeans stored in S-GRMS and D-GRMS; more studies should be conducted with a wider range of storage conditions before developing maximum allowable safe storage time guidelines.Abstract. Time to reach 0.5% dry matter loss (DML) is the estimated maximum allowable storage time (MAST) for shelled corn and has been suggested for use with other grains. Respiration studies have reported various estimates of this threshold depending on the type of grain respiration measurement system (GRMS) and storage conditions tested. The objectives of this study were (1) to design and evaluate two GRMS in which oxygen needed for respiration was limited in a static system (S-GRMS) or continuously supplied in a dynamic system (D-GRMS) during storage and (2) to compare the effects of GRMS on DML rates (vDML) for 18% moisture content soybeans stored at 30°C for 20 d. In this study, S-GRMS and D-GRMS units were designed to conduct respiration tests. Respired CO2 (mg CO2) was measured over time and used to calculate the specific mass of respired CO2 (mg CO2 kg-1 d.b. beans) and subsequent DML (%) using stoichiometric ratios from the respiration chemical reaction. DML rates, vDML (% d-1), were estimated by least squares linear regression of DML and time data. Four replications of respiration tests were conducted in each GRMS. Average estimates of vDML were 0.0157% d-1 and 0.0189% d-1 for S-GRMS and D-GRMS, respectively. Mean vDML from D-GRMS tests was 1.2 times greater than mean vDML from S-GRMS but not statistically different (p = 0.09). However, the coefficient of variation was 8 times greater for D-GRMS than for S-GRMS. More studies with a wider range of storage conditions should be conducted for development of a safety factor between both systems prior to using data from respiration of soybeans in the literature to estimate MAST. Keywords: Dry matter loss, Grain storage, Respiration, Soybeans.

scholarly journals Effects of Splits Content on Dry Matter Loss Rates of Soybeans Measured Using a Static Grain Respiration Measurement System

2021 ◽  
Vol 64 (4) ◽  
pp. 1365-1372
Author(s):  
Ana B. Gatsakos ◽  
Thomas B. Scatolini ◽  
Mary-Grace C. Danao ◽  
Richard S. Gates ◽  
Kent D. Rausch
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Storage Time ◽  
Storage Conditions ◽  
List Type ◽  
Dry Matter Loss ◽  
A Value ◽  
Kernel Content ◽  
The Relationship ◽  
Loss Rates

HighlightsRespiration rate increased with the percentage of split soy beans.The splits multiplier for soybeans appears to be more sensitive than the corn damage multiplier.The relationship between the split percentage and splits multiplier for soybeans is approximately linear.A value for the splits multiplier is provided for 18% moisture content soybeans stored at 35°C.Abstract. The objectives of this study were to compare the effects of 0% to 16% (w/w) splits content (xs) of soybeans stored at 35°C and 18% moisture content (w.b.) on dry matter loss rates (vDML) and to determine a splits multiplier (MS) for soybeans stored at these conditions, similar to the damage multiplier (MD) used in ASABE Standard D535 for shelled corn. Effects of percentage by weight splits (xs) on MS and safe storage time are expected to be greater than MD for corn because soybeans are prone to cracking and splitting, lipid oxidation, and protein degradation, all of which lead to grain dry matter and quality losses. Results indicated that vDML increased with increasing xs, and the mean vDML was 1.5 times greater for samples with 16% splits than for samples with 4% splits. The MS for soybeans was linearly correlated with xs, decreasing from 1.0 to 0.60 for 0% to 16% splits, respectively. Soybeans appeared to be more sensitive to percent by weight splits than corn was to the presence of damaged kernels. In Standard D535, the MD for corn only decreased from 1.0 to 0.8 when percent (w/w) damaged kernel content increased from 30% to 40%. In comparison, it should be noted that damage to soybeans was defined differently from damage to corn. This research is useful in defining MS for 18% moisture content soybeans stored at 35°C under hermetic conditions. The procedures outlined in this article may be used in the future to more formally define a soybean MS that covers a wider range of moisture contents, storage conditions, and possibly an MD based on other factors included in the USDA definitions of damaged soybean kernels. Keywords: Allowable storage time, Grain quality, Splits multiplier.

scholarly journals Evaluating the effects of storage conditions on dry matter loss and nutritional quality of grain legume fodders in West Africa

2020 ◽  
Vol 262 ◽  
pp. 114419
Author(s):  
D.B. Akakpo ◽  
I.J.M de Boer ◽  
S. Adjei-Nsiah ◽  
A.J. Duncan ◽  
K.E. Giller ◽  
...  
Keyword(s):  
West Africa ◽  
Nutritional Quality ◽  
Dry Matter ◽  
Storage Conditions ◽  
Grain Legume ◽  
Dry Matter Loss

scholarly journals Influence of Storage Moisture and Temperature On Lignocellulosic Degradation

2019 ◽  
Vol 1 (3) ◽  
pp. 332-342 ◽  
Author(s):  
Towey ◽  
Webster ◽  
Darr
Keyword(s):  
Moisture Content ◽  
Financial Risk ◽  
Frozen Storage ◽  
Storage Conditions ◽  
Biomass Degradation ◽  
Minimal Impact ◽  
Biomass Storage ◽  
Dry Matter Loss ◽  
The Impact

Feedstock degradation is a major source of financial risk for cellulosic biorefineries. To assess the impact of the feedstock loss and quality during storage, this study explored interactions of moisture content and temperature on the degradation of biomass. Specifically, this study evaluated the dry matter loss and compositional change of corn stover during storage conditions common at industrial biomass storage facilities. This lab-scale study allowed for increased measurement precision associated with quantifying how biomass degradation changes the quality of stored biomass. Results of this work define stable biomass storage moisture content of less than 20% in which there is low risk for degradation over time. At moisture levels above 20%, biomass degradation will be prevalent with hemicellulose being the most degraded fraction of the feedstock. Additionally, results demonstrate that temperature has a minimal impact on biomass degradation in non-frozen storage conditions.

Impact of storage environment on respiration, dry matter losses and fumonisin B1 contamination of stored paddy and brown rice

2017 ◽  
Vol 10 (4) ◽  
pp. 319-326 ◽  
Author(s):  
S. Martín Castaño ◽  
A. Medina ◽  
N. Magan
Keyword(s):  
Dry Matter ◽  
Fusarium Verticillioides ◽  
Brown Rice ◽  
Fumonisin B1 ◽  
Storage Conditions ◽  
Paddy Rice ◽  
Respiration Rates ◽  
Dry Matter Loss ◽  
Moisture Conditions ◽  
Early Indication

The objective of this study was to compare the effect of different storage moisture conditions (0.90 and 0.95 water activity, aw) and temperatures (25, 30 °C) on (1) respiration rates (CO2; R), (2) dry matter loss (DML) of paddy and brown rice, (3) inoculation of both rice types with Fusarium verticillioides under these storage conditions on R, DML, and (4) effects on fumonisin B1 (FB1) contamination of these rice types. There was an increase in temporal CO2 production with wetter and warmer conditions in naturally contaminated rice. Higher R and consequently, percentage (%) DML were generally observed for brown rice (up to 21%) while in paddy rice this was only up to 3.5% DML. The FB1 production in paddy rice was low and similar in all treatments regardless of aw × temperature conditions. In the dehusked brown rice there were higher levels of contamination with FB1, with a maximum at 0.95 aw and 25 °C. A significant correlation between %DMLs and FB1 contamination was obtained (R=0.7454, P<0.01). These results suggest that monitoring of CO2 may provide an early indication of fungal activity in moist rice and help in evaluating the relative risk of spoilage and potential for mycotoxin contamination.

Modelling moisture content and dry matter loss during storage of logging residues for energy

2011 ◽  
Vol 26 (3) ◽  
pp. 267-277 ◽  
Author(s):  
Tore Filbakk ◽  
Olav Albert Høibø ◽  
Janka Dibdiakova ◽  
Juha Nurmi
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Logging Residues ◽  
Dry Matter Loss

scholarly journals Coating Waxes on Pepper Fruits cv. Caribbean and Quality on Different Storage Conditions

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 826A-826
Author(s):  
Juan E. Manzano-Méndex ◽  
Judith Zambrano
Keyword(s):  
Weight Loss ◽  
Dry Matter ◽  
Storage Time ◽  
Titratable Acidity ◽  
Storage Conditions ◽  
Fruit Weight ◽  
Matter Content ◽  
Fresh Fruit ◽  
Dry Matter Content ◽  
Fruit Samples

Pepper fruits (Capsicum annum L. c.v. Caribbean) were treated with two commercial was coatings, Primafresh and Prolong. Fruits were sprayed with Primafresh (original concentration) and Prolong at 0.5% and 1.5% (w/v) concentration. Fruit samples were taken for analysis each of 5 days during 20 days from storage rooms at 1, 5, 10, and 15C. Parameters TSS, titratable acidity, pH, fresh fruit weight loss, texture, and dry matter content were analyzed. TSS and dry matter decreased with the storage time. Titratable acidity increased until 10 days after storage and decreased when fruit were stored for a longer time. The lowest texture deformation was observed at 1 and 5C. Coating treatments reduced the rate of fresh fruit weight loss of peppers compared to uncoated ones.

Predicting Storage Conditions for Rice Seed with Thermodynamic Analysis

2017 ◽  
Vol 13 (11) ◽  
Author(s):  
Pan Wang ◽  
Nan Fu ◽  
Dong Li ◽  
Li-jun Wang
Keyword(s):  
Moisture Content ◽  
Water Activity ◽  
Dry Matter ◽  
Storage Conditions ◽  
Rice Seed ◽  
Water Desorption ◽  
Desorption Process ◽  
Desorption Isotherms ◽  
Rice Seeds ◽  
Minimum Integral Entropy

AbstractThe desorption isotherms ofjaponicaandindicarice seeds were determined at 15, 25, 35, 45 °C within the water activity range from 0.12 to 0.92 and it was observed that GAB model could accurately describe the desorption behaviors with low values of mean relative error (MRE). The thermodynamic properties of rice seeds were obtained by water desorption isotherms. The moisture content with the minimum integral entropy was considered as the best storage condition where the strongest energetic interaction between water molecular and solid occurred and the optimum seed moisture for storage at 35 °C occurred at 6.02 g water per 100 g of dry matter (ɑwof 0.12) forjaponicarice seed and 5.28 g water per 100 g of dry matter (ɑwof 0.08) forindicarice seed, respectively. The mechanisms of desorption process were determined with integral enthalpy–entropy compensation theory and it was observed that the at low moisture content the desorption process of rice seed was controlled by changes of entropy, whereas the desorption process was considered to be controlled by enthalpy mechanism at high moisture content. It was found that theindicarice seed exhibited a wider water activity range in the minimum integral entropy zone, indicating thatindicarice seed was more stable to withstand the different storage conditions compared withjaponicarice seed.

Modelling the dry matter loss of coffee beans under different storage conditions

2020 ◽  
Vol 88 ◽  
pp. 101669
Author(s):  
Daniela de Carvalho Lopes ◽  
Antonio José Steidle Neto
Keyword(s):  
Dry Matter ◽  
Storage Conditions ◽  
Dry Matter Loss ◽  
Coffee Beans
Sign in / Sign up

Export Citation Format

Share Document