H I S T O R Y

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Sugar Processing Research Institute, Inc. (S.P.R.I.)

Sugar Processing Research Institute, Inc. is a research institute run by and for the international sugar manufacturing and processing industries for the purposes of developing, monitoring and understanding new processes and products, maintaining and developing analytical methodology for the sugar industry, solving problems and serving as an information data base for sponsoring companies.

S.P.R.I., as the Institute is generally known, is a non-profit corporation maintained through annual contributions of the sponsoring member companies of the corporation. S.P.R.I. exists primarily for the needs of its sponsoring member companies. Member companies include beet and cane sugar producers and refiners, suppliers to the industry and major sugar users. S.P.R.I. is based in New Orleans, Louisiana, USA, in laboratory and office space at the Southern Regional Research Center, through a special agreement with the U.S. Department of Agriculture (Southern Regional Research Center is part of U.S.D.A.'s Agricultural Research Service) although S.P.R.I., Inc. is not part of U.S.D.A. The Board of Directors of S.P.R.I. (one Director from each sponsoring member) elects the corporate officers and Executive Committee every two years. The Managing Director is responsible for the research program, personnel and financial operations of the group. The group is small: four to five research scientists (chemists, biochemists), several full time support scientists and/or engineers, technicians and office staff, but benefits from its location in a major research center with access to high technology, equipment and cooperating scientists in many fields.

ORIGINS

The Sugar Processing Research Institute, Inc. has developed from two preceding research organizations. In the late 1930's there was concern on the part of some cane sugar refiners in the U.S. that their refining process depended on bone char, a substance about which little was known. A group of sugar refiners was brought together by John W. Lowe of Revere Sugar to support research on bone char at the National Bureau of Standards, Washington, D.C., where Frederick J. Bates worked with the sugar industry on polarimetry. In 1939, Dr. Victor R. Deitz initiated the work of the Bone Char Research Project (BCRP), on the nature and reactions of bone char and other decolorizing carbons. In 1948, Dr. Frank G. Carpenter and Neil Pennington joined the BCRP Director, Dr. Deitz, and investigations expanded into the chemistry and processing of other areas of cane sugar refining. The BCRP Reports and Proceedings of the seven Technical Sessions on Bone Char are still the major source of information on decolorizing carbons in sugar refining.

In 1963, the National Bureau of Standards changed policy and stopped housing industry-sponsored research. Industrial sponsors wanted the work to continue and instituted a cooperative research effort with the U.S. Department of Agriculture's Southern Regional Research Center in New Orleans, where a U.S.D.A. research group worked on sugarcane milling and raw sugar manufacture. Dr. Frank G. Carpenter moved to New Orleans to direct the new Cane Sugar Refining Research Project, Inc. (CSRRPI) and remained there until his retirement in 1984. Among major accomplishments of the CSRRPI group were the first identification of specific sugar colorants, most from the cane plant; solution of the problem of acid beverage floc from cane sugars, and initiation of a program on dextran and other polysaccharides in cane sugars. Dr. Frank Carpenter began the close association of the group with ICUMSA, which continues today.

In the late 1970's, the work of CSRRPI moved toward raw cane sugar quality from both refiners' and producers' viewpoints. As the 1980's began, beet sugar producers showed interest in membership. In 1981, the research group was reorganized to S.P.R.I. (then Sugar Processing Research, Inc. - the term "Institute" was added a few years later), with Dr. Margaret A. Clarke as Managing Director. Dr. Michael C. Bennett, who had been President of CSRRPI, became the first President of S.P.R.I.

S.P.R.I. TODAY

The goals of S.P.R.I. today are:

1. To examine the fundamentals of sugar production and refining processes to gain understanding of the chemical and physical bases of these processes in order to improve the operation of current processes and to develop new processes and products.

2. To study the chemical nature of sugars, sweeteners, non-sugars and sugar-producing plants in order to explain processing problems and product quality problems, and to coordinate new developments and problems in agricultural and production practices.

3. To develop new analytical methods for the sugar industry, as such needs are identified, and to improve and expand methods in current use, to apply rapid, practical methods to industrial needs.

4. To apply information on the chemical nature of sugars, non-sugars and sugar producing plants to uses of sugar, and of molasses and other byproducts of sugar manufacture, including bagasse and beet pulp.

5. To serve as an information resource and data base on sugar production, process problems, sugar manufacturing byproducts, sweeteners, and associated areas for sponsoring companies of S.P.R.I., Inc.

6. To assist in problem solving in research-related areas for sponsoring companies of S.P.R.I., Inc.

In addition to operating its research program, S.P.R.I. holds the Conference on Sugar Processing Research every second year, for technical leaders in the sugar industry. Proceedings of these Conferences form a written record of advances in processing, new products and analytical methodology in the cane and beet sugar industries. Workshops, on selected topics of interest to the sugar industry, are usually held in conjunction with the Conferences. Proceedings are also published from Workshops, and are for sale to the public as working tools.

The S.P.R.I. Science Award has been presented at each Conference since 1986 to a scientist selected by a Judging Committee for significant contributions to the science of sucrose processing and production. A new award, the S.P.R.I. Industrial Technology Award, was presented for the first time at the 1998 S.P.R.I. Conference to a nominee who has made outstanding contributions to the technology of sugar production.

For 14 years S.P.R.I. hosted annually the New Orleans Carbohydrate Symposium -NOCS, a small symposium on the frontiers of carbohydrate chemistry that achieved a significant international reputation. After the death of Dr. Margaret Clarke in June 1998 the meetings were discontinued. SPRI has revived the NOCS with its first meeting since April 1998 on April 10-12, 2008 at the Dauphine Orleans Hotel in New Orleans.  Join us on April 1, 2011 for the 18th New Orleans Carbohydrate Symposium at the Chateau LeMoyne French Quarter Hotel in the Historic French Quarter.

S.P.R.I.'s accomplishments emphasize the non-sugars in sugar crops, and their effects on process. Examples include: application of colorant classification in cane and beet sugars to factory and refinery processing and removal of colorant types in process; identification of dextran problems in cane and beet processing, and development of both an official (AOAC) test for dextran in raw sugars as well as a rapid assay; assessment of filter impeding factors and identification of fine field soil particles as a major hazard; identification of both vegetative and microbial polysaccharides in sugarcane and sugarbeet and their process and product related problems, and, most recently, finding the causes of acid beverage floc in beet sugars. S.P.R.I. has been in the forefront of research on the sensory characteristics of sugar products, bringing in Near Infrared methodology since 1990, and HPLC/IC systems in the 1980's. The cooperation from USDA, particularly from the Sugarcane Field Station now led by Dr. Ben Legendre until 2000, has been of great assistance.

S.P.R.I.'s current major areas of research, are in sugar colorant and polysaccharides, sucrose loss, membrane filtration, clarifying agents, biomass analysis, utilization and other analytical methodology and product quality studies, are described in the papers presented by S.P.R.I. personnel at the Conference on Sugar Processing Research.

SPRI celebrates 71 years of research for the sugar industry with hosting its SPRI 2010 Conference on Sugar Processing Research with the theme: Research in a Changing Sugar Industry. The conference was held at the Iberville Suites/Ritz-Carlton Hotel in New Orleans, Louisiana, USA on March 28-31, 2010.  The technical program consisted of 7 sessions (Award, New Technologies, Commercial Session “New Products and Processing,” Energy Issues, Processing Issues and a Symposium entitled: “Sugar Quality for Food and Impact on the Change of the Industry) 3 keynote presentations, 21 oral presentations, 5 exhibitors (Anton Paar USA, International Sugar Journal, Neltec Denmark A/S, Prodek, Inc., Sugar Journal and Zuckerindustrie) and a technical tour of the Chef John Folse & Company Manufacturing Plant.  There were 59 attendees representing 41 international companies and institutions from 10 countries (Brazil, Canada, Denmark, Germany, Italy, Malawi, Mexico, Sweden, United Kingdom, and USA.)

Keynote Presentations:

 

“Sugar Crytsal: A Chameleon,” GIUSEPPE VACCARI, University of Ferrara, Italy.(Winner of the SPRI Science and Technology Award)


“The Role of Sugarcane in Our Future: The Grand Challenge,”GAIL WISLER, USDA-ARS National Program Leader, Beltsville, MD, USA.

Louisisana Institute for Biofuels and Bioprocessing,” JOHN RUSSIN, LSU AgCenter Associate Vice Chancellor, Louisiana State University, Baton Rouge, LA, USA.

 

Sugar Crystal:  A Chameleon, Prof. Giuseppe Vaccari, University of Ferrara, Dipartimento di Chimica, Via L. Borsari, 46, I-44100 Ferrara, Italy, Tel: 39-532-240-706, Email: vcg@unife.it

What kind of comparison can be found between sugar crystals and chameleons? Apparently none, but when we look at sugar crystals, a lot of questions could emerge, such as:

Do the crystals have the same shape?

How many faces do they have?

Do they all have the same number of faces?

How many faces would they have?

Is the relative area of the various faces always the same?

Is it possible that some faces appear or disappear?

What is the effect of temperature, supersaturation and composition of the solution?

Do the crystals have the same color?

Where is located the color of the crystal?

Is the color of the crystal uniformly distributed?

Are colored substances chemically bonded to the crystals?

Is there a correlation between the color of the crystal and the color of the growing solution?

What are the effects of “spontaneous nucleation” and “seeding”?

Which are the differences between single crystals, twins and conglomerates?

Do large crystals and small crystals have the same shape and the same color?

Why can crystals have different gloss?

What are the differences between beet and cane crystals?

Can we obtain good crystals from very impure or colored solutions?

Which is the shape of the crystals when we use alternative technologies which replace the traditional purification of the juices?

If we try to give answers to these questions, we realize that sugar crystals can have different shapes, different sizes, different color depending upon the environment in which they exist and in which they have been grown. As a consequence, we can realize that there is an ideal correlation between sugar crystals and chameleons. In fact, also these latter have different sizes, shapes and color depending upon the environment in which they are and live.

 

Margaret A. Clarke Best Paper Award – Winner – HENRIQUE V. AMORIM -  Fermentec Ltda, Brasil

Impact of Sugar Cane Juice Chemical Composition on Clarification and VHP Sugar Quality, Henrique Amorim, Fermentec, Antonia Pizzinato Sturion Street 1155, Jd. Petropolis, 13420-640 Piracicaba SP, Brasil, Tel: 55-192105-6100, Fax: 55-192405-6101, E-mail: amorim@fermentec.com.br

It is well known that the sugar cane composition affects clarification and sugar recovery and quality. However, it is not well known the levels of such variables in clarification and VHP sugar quality.  This research was performed in a sugar and ethanol plant in Brazil which crushes 4 millions ton of cane per season and 25,000 ton per day.  Fifty four samples were collected in first extraction juice, dosed juice and clarified juice during several weeks and also samples of the VHP sugar, were analyzed.  The juices were analyzed for sucrose, glucose, fructose, lactic acid, acetic acid, dextran and minerals. S was analyzed for solid impurities, turbidity and color.  Positive correlations were found between phosphorus and clarification efficiency and VHP color.  The lactic and acetic acids, as well glucose and fructose in juice, correlated negatively with sugar quality (increase color).  Dextran interferes in clarification and affects Honig-Bogstra indice.  Knowing better the variables that affect clarification and sugar quality, it is possible to improve the process.

 

You may view the abstracts from the meeting using this link at http://www.spriinc.org/abstracts0310.html and view the complete technical program using the link www.spriinc.org/TechnicalProgramSPRI2010.html.  SPRI wishes to take this time to thank all the presenters for their fine presentations that will be a great asset to the completed proceedings of the SPRI 2010 Conference to be published by May 2011.

Join us in 2012 for the S.P.R.I. Conference in New Orleans, Louisiana, USA, in the Spring 2012.

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