scholarly journals Impact of storage on sugar loss in sorghum stalks

2019 ◽  
Vol 14 (33) ◽  
pp. 1629-1634
Author(s):  
Maureen Wright
Keyword(s):  
Sugar Loss

Susceptibility to root tip breakage increases storage losses of sugar beet genotypes

2016 ◽  
pp. 625-632 ◽  
Author(s):  
Christa Hoffmann ◽  
Katharina Schnepel
Keyword(s):  
Sugar Beet ◽  
Sugar Content ◽  
Close Correlation ◽  
Invert Sugar ◽  
Root Tip ◽  
Sugar Accumulation ◽  
Genotypic Differences ◽  
Storage Losses ◽  
Controlled Conditions ◽  
Sugar Loss

Good storability of sugar beet is of increasing importance, not only to reduce sugar losses, but also with regard to maintaining the processing quality. Genotypic differences are found in storage losses. However, it is not clear to which extent damage may contribute to the genotypic response. The aim of the study was to quantify the effect of root tip breakage on storage losses of different genotypes. For that purpose, in 2012 and 2013, six sugar beet genotypes were grown in field trials at two locations. After lifting roots were damaged with a cleaning device. They were stored for 8 and 12 weeks, either under controlled conditions in a climate container at constant 8°C, or under ambient temperature in an outdoor clamp. The close correlation underlines that storage losses under controlled conditions (constant temperature) can well be transferred to conditions in practice with fluctuating temperature. The strongest impact on invert sugar accumulation and sugar loss after storage resulted from storage time, followed by damage and growing environment (year × growing site). Cleaning reduced soil tare but increased root tip breakage, in particular for genotypes with low marc content. During storage, pathogen infestation and invert sugar content of the genotypes increased with root tip breakage, but the level differed between growing environments. Sugar loss was closely related to invert sugar accumulation for all treatments, genotypes and environments. Hence, it can be concluded that root tip breakage contributes considerably to storage losses of sugar beet genotypes, and evidently genotypes show a different susceptibility to root tip breakage which is related to their marc content. For long-term storage it is therefore of particular importance to avoid damage during the harvest operations and furthermore, to have genotypes with high storability and low susceptibility to damage.

Reducing sugar loss in enzymatic hydrolysis of ethylenediamine pretreated corn stover

2017 ◽  
Vol 224 ◽  
pp. 405-410 ◽  
Author(s):  
Wen-Chao Li ◽  
Xia Li ◽  
Lei Qin ◽  
Jia-Qing Zhu ◽  
Xiao Han ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Corn Stover ◽  
Reducing Sugar ◽  
Pretreated Corn Stover ◽  
Hydrolysis Of ◽  
Sugar Loss

scholarly journals Assessment of Natural Deep Eutectic Solvent Pretreatment on Sugar Production from Lignocellulosic Biomass

2018 ◽  
Vol 152 ◽  
pp. 01014 ◽  
Author(s):  
Yoon Li Wan ◽  
Yuen Jun Mun
Keyword(s):  
Enzymatic Hydrolysis ◽  
Lignocellulosic Biomass ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Economic Feasibility ◽  
Effect Of Temperature ◽  
Sago Waste ◽  
Natural Deep Eutectic Solvent ◽  
Hydrolysis Of ◽  
Sugar Loss

Before the conversion of lignocellulosic biomass into fuel such as ethanol, the biomass needs to be pretreated and the yield of ethanol is highly dependent on the pretreatment efficiency. This study investigate the performance of deep eutectic solvent (DES) in pretreating sago waste which is a type of starchy biomass. The suitable type of DES in sago waste pretreatment was selected based on three criteria, which is the structural characteristic, the sugar yield during enzymatic hydrolysis and the amount of sugar loss during pretreatment. In this study, three types of DES namely Choline Chloride-Urea (ChCl-Urea), Choline Chloride-Citric acid (ChCl-CA) and Choline Chloride-Glycerol (ChCl-Glycerol) was investigated. The effect of temperature and duration on DES pretreatment was also investigated. All DES reagents were able to disrupt the structure and increase the porosity of sago waste during pretreatment. ChCl-Urea was selected in this study as it shows apparent structural disruption as examined under Scanning Electron Microscope (SEM). The highest glucose yield of 5.2 mg/mL was derived from enzymatic hydrolysis of ChCl-Urea pretreated sago waste. Moreover, reducing sugar loss during ChCl-Urea pretreatment was low, with only 0.8 mg/mL recorded. The most suitable temperature and duration for ChCl-Urea pretreatment is at 110°C and 3 hr. In a nutshell, the application of DES in pretreatment is feasible and other aspects such as the biodegradability and recyclability of DES is worth investigating to improve the economic feasibility of this pretreatment technique.

Changes in the weight and quality of sugarbeet (Beta vulgaris) roots in storage clamps on farms

1997 ◽  
Vol 129 (3) ◽  
pp. 287-301 ◽  
Author(s):  
K. W. JAGGARD ◽  
C. J. A. CLARK ◽  
M. J. MAY ◽  
S. McCULLAGH ◽  
A. P. DRAYCOTT
Keyword(s):  
Beta Vulgaris ◽  
Reducing Sugars ◽  
Quality Parameters ◽  
Thermal Time ◽  
Temperature Changes ◽  
Sugar Factory ◽  
Commercial Practice ◽  
Random Samples ◽  
Sugar Loss

The changes in weight and quality of sugarbeet roots stored in 18 clamps, mostly in eastern England during the winters of 1992/93 to 1994/95, were studied on farms using best commercial practice. Storage usually started in early December, at about the last recommended date of harvesting, and continued until the end of the beet-processing campaign at the local sugar factory (usually in February). Random samples of beet, in open-weave nets, were either analysed at the outset or were buried in a predetermined pattern in the clamp for up to 84 days. Periodically, samples were removed from the clamps for analysis. Beet weight hardly changed but sugar was lost as a reduction in sugar concentration: this declined at c. 0·02% per day. The concentration of reducing sugars, which are important impurities, increased fourfold during storage. Most other beet quality parameters remained unchanged. Sugar and adjusted weight was lost at 0·143 and 0·187% per day respectively. This relationship was highly significant, but a relationship between sugar loss and accumulated thermal time (0·0188% per °C day) accounted for more of the variation (73%). Temperature changes within the clamps, and the differences between clamps in accumulated thermal time, were not predictable. Some clamp insulation materials appear to allow more heat to accumulate than is desirable.

Technological aspects of the beet yard operation

2020 ◽  
pp. 214-219
Author(s):  
Jan Maarten de Bruijn
Keyword(s):  
Sandy Soil ◽  
Retention Time ◽  
Clay Soil ◽  
Residual Soil ◽  
Sugar Beets ◽  
Heavy Clay ◽  
The Individual ◽  
Sugar Loss

The beet yard operation comprises the handling of sugar beets after they are received on site up to the beet hopper. It is not intended here to present a detailed description of all the individual steps involved, but rather to focus on the main technological objectives of the beet yard operation: sufficient removal of soil from the beets while limiting the associated (unavoidable) sugar loss as much as possible. Parameters considered are: – Washing requirements for beets from heavy (clay) soil versus beets with easy to remove light (sandy) soil; – On site beet storage, as well as dry or wet beet intake; – Sugar losses in different steps of beet washing and impact of retention time; – Residual soil adhering to the beets after washing and HCl-insoluble ash in pulp.

Chemistry and microbiology in sugar extraction

2021 ◽  
pp. 574-581
Author(s):  
Jan Maarten de Bruijn
Keyword(s):  
Retention Time ◽  
Operating Conditions ◽  
Tissue Structure ◽  
Extraction System ◽  
Microbial Infection ◽  
Subsequent Processing ◽  
Sugar Extraction ◽  
The Stability ◽  
Processing Steps ◽  
Sugar Loss

The stability of the sucrose molecule and the firmness of the tissue structure in the cossettes are of major concern when optimizing the operating conditions for the extraction system. For a given extraction system the retention time is more or less fixed, but the actual pH values and temperatures to be set across the system largely determine the extent to which both sugar gets lost by hydrolysis and the cossette structure deteriorates, particularly by dissolution of pectin. Furthermore, potential sugar loss by microbial infection in the extraction system needs to be controlled too. The influence of the pH value and temperature on these undesirable chemical and microbial reactions will be outlined in this paper, including the consequences for the subsequent processing steps. It can be concluded that the recommended optimal pH values and temperatures for operating the extraction system are a compromise between good and bad.

Loss of soluble carbohydrates and changes in freezing point of Antarctic bryophytes after leaching and repeated freeze-thaw cycles

1992 ◽  
Vol 4 (4) ◽  
pp. 399-404 ◽  
Author(s):  
D. R. Melick ◽  
R. D. Seppelt
Keyword(s):  
Freezing Point ◽  
Thermal Analyses ◽  
Late Summer ◽  
Total Sugar ◽  
Control Treatment ◽  
Soluble Carbohydrates ◽  
Freeze Thaw ◽  
The Dead ◽  
Bryum Pseudotriquetrum ◽  
Sugar Loss

Healthy samples of Grimmia antarctici (turf and cushion ecodemes), Ceratodon purpureus, Bryum pseudotriquetrum and Cephaloziella exiliflora were collected in late summer in Wilkes Land together with senescing and dead G. antarctici material. Plant material was subjected to leaching in water and up to 16 freeze-thaw cycles. Gas chromatography revealed that following 16 days immersion, loss of carbohydrates (mainly glucose and fructose) was relatively low (c. 10–29% of the total sugar pool) for healthy material, with the loss of 69% from the dead G. antarctici material. Freeze-thaw cycles greatly increased rates of sucrose leakage and led to a 2–3 times rise in total sugar loss in all samples except the dead brown tissue which was not significantly different from the leached control treatment. After 16 freeze-thaw cycles Bryum pseudotriquetrum had lost 65% of total sugar pool. Losses for other species were below 28%. Differential thermal analyses showed freezing points of tissue varied from −8.3 to −3.5°C with dead material having the highest freezing temperatures. There was no significant correlation within species of freezing temperature changes with progressive sugar loss. The results are discussed in relation to nutrient cycling, soil microbial activity and the viability of bryophyte species in the Antarctic environment.

Effects of Stem Length and Storage Duration on Sugar Losses in Sweet Sorghum

2018 ◽  
Vol 34 (2) ◽  
pp. 251-259
Author(s):  
Stefano Amaducci ◽  
Alberto Assirelli ◽  
Marco Trevisan ◽  
Alessandra Fracasso ◽  
Enrico Santangelo ◽  
...  
Keyword(s):  
Sweet Sorghum ◽  
Time Course ◽  
Sugar Content ◽  
Storage Period ◽  
Storage Conditions ◽  
Stem Length ◽  
Storage Duration ◽  
Total Sugar Content ◽  
And Storage ◽  
Sugar Loss

Abstract. Sweet sorghum ( (L.) Moench) is a multi-purpose crop, yielding fuel in the form of ethanol from its stem juice, food in the form of grain, and fodder from its leaves and bagasse. The sugars utilized for bioethanol production are contained in the stalks, in an amount varying between 12% and 25% of the fresh biomass, according to the genotypes and harvesting time. However, these carbohydrates can be easily lost during harvest and post-harvest, because of wrong machinery settings and prolonged periods of exposure of the cut material to the action of fermentative agents. For these reasons, the production of biofuel from sweet sorghum is very sensitive to harvest systems and storage methods, as they can influence remarkably the final energetic yield of the crop. The main objective of the present study was to monitor the time course of dry matter and sugar content in sweet sorghum stem over a long-time storage period. The analysis was carried out by dividing the stems into portions of different length in order to test different storage configuration by varying the stem portion stored to simulate the action of different harvest machines. This work has been designed to take into account a larger storage window respect previous experimentation. The research has provided evidence that sugar loss during the storage is highly influenced by the length of the stem portion, as well as by storage conditions. Total sugar content at harvest was on average 23.2%. The decreasing of sugar content continued during the storage period but at different rate for the different portions. At the end of storage, the sugar content of the whole stem was on average 6.6%, while the smallest portion (1/16 of the whole stem) had an average content of 1.0%. Indications on best storage conditions (storage form, storage location, storage ambient condition), as well as technical details regarding new potential harvesting solutions to decrease the speed rate of sugar loss have been provided. Keywords: Biofuel, Harvesting, Storage, Sugar losses, Sweet sorghum.

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