Development of the sugar beet quality in the Netherlands since 1980 and introduction of invert sugar as a new parameter for beet quality assessment

2015 ◽  
pp. 95-103 ◽  
Author(s):  
Dirk P. Vermeulen
Keyword(s):  
The Netherlands ◽  
Sugar Beet ◽  
Quality Assessment ◽  
Sugar Content ◽  
Quality Parameters ◽  
Invert Sugar ◽  
Internal Quality ◽  
Glucose Content ◽  
Thick Juice ◽  
Trial Phase

The technological beet quality has been always important for the processors of sugar beet. An investigation into the development of the beet quality in the Netherlands since 1980 has shown that beet quality has improved significantly. Internal quality parameters that are traditionally determined in the beet laboratory, i.e. sugar content, Na, K and -aminoN, all show an improving trend over the years. In the factories, better beet quality has led to lower lime consumption in the juice purification and significantly higher thick juice purity. In 2013, Suiker Unie introduced the serial analysis of the glucose content in beet brei as part of the routine quality assessment of the beet. The invert sugar content is subsequently calculated from glucose content with a new correlation. The background, the trial phase and the first experiences with the glucose analyzer are discussed.

Impact of beet quality on sugar manufacture Part 2. Impact of invert sugar on beet processing

2020 ◽  
pp. 154-160
Author(s):  
Jan Maarten de Bruijn
Keyword(s):  
Sugar Beet ◽  
Sugar Content ◽  
Quality Criteria ◽  
Quality Parameters ◽  
Invert Sugar ◽  
Quality Analysis ◽  
Sugar Recovery ◽  
Glucose Content ◽  
Recent Developments ◽  
The Impact

In the earlier SugarProTech Facts1, Part 1, it has been explained that, apart from the traditional beet quality criteria (i.e. sugar content, K, Na, N, soil tare), additional quality criteria should be looked upon too, so to reduce their impact on processing. The invert sugar content of sugar beet is one of the most important quality parameters and thanks to recent developments it is now possible to routinely determine the glucose content of sugar beet in the tarehouse from which the total invert sugar content can be calculated. In Part 2 of this beet quality topic it will be demonstrated that incorporating invert sugar in the (Dutch) formula for predicting the sugar loss to molasses – and so the extractability of sugar from beet – has markedly improved the correlation between beet quality analysis and sugar recovery in factory practice. The impact of the invert sugar content in beet on both sugar recovery and the need of alkali addition to process will be quantified, thereby distinguishing different beet qualities.

Evaluation of an alternative method for the prediction of the technological beet quality

2012 ◽  
pp. 88-94 ◽  
Author(s):  
Florian Emerstorfer ◽  
Walter Hein ◽  
Hans Bauer
Keyword(s):  
Sugar Content ◽  
Amino Nitrogen ◽  
Quality Parameters ◽  
Invert Sugar ◽  
Sodium Potassium ◽  
Variety Trial ◽  
Methods Of Calculation ◽  
The Common ◽  
Thick Juice ◽  
Predictive Formulas

Stagnation of the technological beet quality in Austria has peaked in discussions about methods of calculation used for predicting the same. Consequently, a project was started in 2010 in order to compare various predictive formulas for the technological beet quality on the basis of beet material from a practice variety trial as well as from weekly blended samples collected in the last campaign at Leopoldsdorf and Tulln. The beet material was analyzed for the common quality parameters such as sodium, potassium, -amino nitrogen and sugar content as well as for dry substance for a so-called “refractometer formula”. Finally, results for thick juice purity were calculated with different “classical formulas” and the “refractometer formula”. Comparing these results, the latter delivered the highest values. However, aside from a formula which also takes into account invert sugar, only the “refractometer formula” considerably reacted to decreasing beet quality over the progression of the last campaign. Consequently, it is planned to recalculate the factors of this formula because it is based on a simpler and less time-consuming analytical procedure compared to formulas which take into account invert sugar.

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.

Considerations of the technological quality assessment of sugarbeet

2011 ◽  
pp. 85-89 ◽  
Author(s):  
Giorgio Pezzi
Keyword(s):  
Quality Parameters ◽  
Northern Italy ◽  
Glucose Content ◽  
Long Term Storage ◽  
Interesting Correlation ◽  
Technological Quality ◽  
Thick Juice

No real improvement in the technological quality of beet has been recorded over the last 15 years in Northern Italy. Among the possible explanations for the quality stagnation is that the traditional formulae cannot correctly differentiate between sugarbeet varieties which produce thick juice of very high purity. This seems to be connected with the role of potassium. The use of a standard purification procedure gives reliable and accurate data which is immediately comparable with the factory data. Research projects on medium/long term storage are currently being performed by Co.Pro.B., Italy, in cooperation with Syngenta and Beta. Up to now the results have shown that storage of sugarbeet in autumn time in northern Italy is possible provided that suitable varieties and proper handling of the roots are employed. Results obtained in the storage trials are reported. Correlations have been found between quality parameters (purity, color and lime salts) of the purified juice with the glucose content of the raw juice. An interesting correlation is reported between purified juice purity and raw juice purity.

Combi scheme: new combined internal/external quality-assessment scheme in The Netherlands

1991 ◽  
Vol 37 (7) ◽  
pp. 1196-1204 ◽  
Author(s):  
Herman Steigstra ◽  
Rob T Jansen ◽  
Henk Baadenhuijsen
Keyword(s):  
The Netherlands ◽  
Quality Assessment ◽  
Internal Control ◽  
External Quality Assessment ◽  
Clinical Chemistry ◽  
Laboratory Data ◽  
Data Communication ◽  
Professional Organization ◽  
Internal Quality ◽  
External Quality

Abstract The Dutch Foundation for Quality Assessment in Clinical Chemistry (SKZL) is the professional organization that conducts external quality-assessment schemes in The Netherlands. However, such schemes in fact assess the performance of the internal quality-control systems of the participating laboratories. In this paper we describe a new concept, relating the data for internal control materials with those for external samples and thereby leading to a combined external/internal scheme (Combi). The statistical principles underlying the Combi scheme are discussed and examples of the graphical presentation of the results are shown. Because the laboratory data are transmitted over the public telephone system to the computers of the SKZL, we also describe the principles of the data communication. At two-month intervals a statistical presentation is sent to all participants. The central database is updated daily with the received results, making possible an on-line consultation regarding the statistics of the accumulated findings of the control materials in use.

Impact of beet quality on sugar manufacture Part 1. General considerations of the technological beet quality

2020 ◽  
pp. 86-93
Author(s):  
Jan Maarten de Bruijn
Keyword(s):  
Sugar Content ◽  
Amino Nitrogen ◽  
Quality Parameters ◽  
Quality Parameter ◽  
Production Costs ◽  
Internal Quality ◽  
Process Technology ◽  
Sugar Beets ◽  
Considerable Impact ◽  
Affect Processing

Without doubt, the sugar content is the major quality parameter of sugar beets. The amount of sugar which can be crystallized as white sugar in processing is often predicted using empirical formula. These formulas are usually based on the potassium, sodium and amino-nitrogen content of the beets. The amount of sugar that cannot be crystallized (i.e. the sugar contained in molasses) is related to these internal quality parameters. However, from a process technology perspective other beet quality parameters play an important role too and may have a considerable impact on the efficiency of beet processing and thus production costs. The first part of this paper presents an overview of the technologically considered important external and internal beet quality parameters and how they affect processing.

Methodological studies on the precision of variety trials with sugar beet – effect of sample size and head rows

2020 ◽  
pp. 554-561
Author(s):  
Christine Kenter ◽  
Philipp Götze ◽  
Erwin Ladewig
Keyword(s):  
Sugar Beet ◽  
Sample Size ◽  
Sugar Content ◽  
Field Trials ◽  
Quality Parameters ◽  
Quality Data ◽  
Root Yield ◽  
Current Standard ◽  
Variety Trials ◽  
Yield And Quality

In Germany, the guidelines for variety trials with sugar beet require plots with 80–100 beets for a representative estimation of root yield. If possible, one or two head rows shall be planted perpendicular to the plots to avoid border effects at open alleys. The optimum sample size was determined in the 1970s and the effect of head rows has not yet been systematically studied. The aim of the present study was to quantify the effects of sample size and head rows on the precision of yield and quality data of sugar beet. Two series of field trials were carried out in Germany in 2016–2017. In the series “sample size”, conducted at 9 environments, samples of 30, 60, 90 and 120 beets were compared. With increasing number of beets, coefficients of variation and least significant differences for yield and quality parameters decreased, especially when the sample size was increased from 30 to 60 beets. Compared to the current standard of 90 beets, the precision of samples with 60 beets was similar for sugar content but lower for root yield. It is concluded that the current sample size should not be reduced. In the series “head rows”, ten variety trials were conducted without and with head rows. The precision of trials with and without head rows did not differ in general. The effect of head rows on least significant differences for root yield and sugar content was not consistent among environments. With head rows, absolute root yield (tonnes per ha) was lower and sugar content was higher than without, but the rank of varieties in relative white sugar yield remained unchanged. Sugar beet varieties can thus be tested in trials with and without head rows without losing precision, even within the same trial series.

Processing deteriorated beet. Part 1: Indicative and quantitative analysis of the degree of deterioration

2021 ◽  
pp. 92-99
Author(s):  
Jan Maarten de Bruijn
Keyword(s):  
Quantitative Analysis ◽  
Sugar Beet ◽  
Performance Indicators ◽  
Visual Inspection ◽  
Early Stage ◽  
Quality Parameters ◽  
Invert Sugar ◽  
Critical Levels ◽  
Process Operation ◽  
And Performance

For purpose of process control and measures to handle deteriorated beet material it is of the utmost importance to monitor the beet quality parameters indicating beet deterioration. This paper presents an overview of the most appropriate methods to be applied: visual inspection of beet material, analysis of marker components like mannitol and invert sugar, and the analysis of dextran. Critical levels of these components in sugar beet are mentioned, beyond which actions in process operation should be undertaken. Recognizing deteriorating beet quality at an early stage is possible by attention to sudden or gradual changes of particular process parameters and performance indicators, which will be briefly explained.

scholarly journals The effect of crop rotation on performance and qualitative characteristics of sugar beet

2020 ◽  
Vol 12 (3) ◽  
pp. 711-718
Author(s):  
Mohammad R. ORAZIZADEH ◽  
Mostafa HOSSEINPOUR ◽  
Parviz FASAHAT
Keyword(s):  
Sugar Beet ◽  
Crop Rotation ◽  
Block Design ◽  
Sugar Content ◽  
Field Trials ◽  
Quality Parameters ◽  
Root Yield ◽  
Trial Effect ◽  
Significant Difference ◽  
The Stability

Sugar beet and sugarcane are two major crops for sugar extraction throughout the world. However, the sugar beet importance is not just about sugar production but it also plays an important role in crop rotation and increased productivity in various industries as well as livestock feed. In this study the long-term (2009-16) field trial effect of alfalfa (4 years)-winter wheat (1 year)–fallow (1year)-sugar beet rotation on yield and quality parameters of sugar beet were evaluated for two consecutive rotations. The field trials were carried out at single location in Karaj, Iran, using randomized complete block design with four replications. Analysis of variance showed that the seasonal factors influenced different traits. In the first and second rotations, the root yield ranged from about 56.5 to 83.2 and 61.4 to 77.8 t ha-1, respectively with significant difference among cultivars in the first rotation. However, no significant difference was observed among both rotations in terms of root yield. Same results were obtained for sugar yield in both rotations which illustrates the stability of the above-mentioned traits. Except for sugar content, significant difference was observed among other traits in both rotations. We show for the first time the effect of completing two rotation sequences on sugar beet performance and quality for decision making into a continual expansion/development of crop cultivation.

Effect of agronomic factors on invert sugar accumulation in sugar beet

2016 ◽  
pp. 765-769
Author(s):  
Martijn Leijdekkers
Keyword(s):  
Early Stage ◽  
Sugar Content ◽  
Frost Damage ◽  
Field Trials ◽  
Invert Sugar ◽  
Control Measures ◽  
Sugar Accumulation ◽  
Laboratory System ◽  
Glucose Content ◽  
Substantial Impact

Since 2013, the glucose content of all beet samples from beet reception and field trials is routinely analyzed in The Netherlands using a biosensor which is integrated into the automatic beet laboratory system. The invert sugar content is subsequently calculated from the glucose content using a linear conversion factor. This additional information helps to identify beet deliveries with a questionable beet quality at an early stage and provides valuable information on various agronomic factors that increase invert sugar accumulation in the beet. Based on results obtained during the past years, different factors are highlighted that affect the invert sugar content in the beet. Among these factors, beet deterioration following frost damage and the presence of root rot due to infestation by pests and diseases have shown to increase the invert sugar content dramatically. In addition, unfavorable storage conditions and bad harvesting quality had a substantial impact on invert sugar accumulation. Growth conditions and beet variety also influenced the invert sugar content markedly, although to a much lesser extent. Using the obtained data, the most important control measures that enable growers to prevent undesired invert sugar formation and consequent sugar losses in their beet are discussed.

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