THE YEASTS, THEIR ECONOMIC, TECHNOLOGICAL AND DIVERSIFICATION POTENTIAL—PRESENT AND FUTURE

By  OSCAR A. ALMAZAN(1), MIGUEL A. OTERO-RAMBLA(1), JORGE R. WAGNER(2) and ISABEL GUERRERO-LEGARRETA(3)

1Cuban Institute for Research on Sugarcane By-Products (ICIDCA), Cuba 
2National University of Quilmes (UNQ), Argentina 
3Autonomous Metropolitan University, Iztapalapa Unit (UAMI), Mexico 

oscar.almazan@icidca.edu.cu

KEYWORDS: Yeasts, Technologies, Nutrition, Flavour, Enhancers, Proteins, Pollution.

Abstract

ABRIEFlook at the way yeasts and human beings met in ancient times, as well as an analysis of the primary and marginal yeastssuch as baker’s yeast, fodder yeast from different agro-industrial residues, beer production, etc., with the possible alternatives for upgrading, are presented. The analysis of the yeasts propagation, as an established technology for the dramatic reduction of the polluting potential of distillery slops, with
the simultaneous synthesis of a high quality fodder protein concentrate, as well as the evaluation of yeasts as a source of human nutrition complements, flavour enhancers, specific proteins and amino acids, organic pigments, plus the evaluation of the uses of the functional and thermal properties of yeasts, will complete the scope of this paper.

Source http://www.issct.org/pdf/proceedings/2010/2010%20Almazan,%20THE%20YEASTS,%20THEIR%20ECONOMIC,%20TECHNOLOGICAL%20AND%20DIVERSIFICATION%20POTENTIAL-%20PRESENT%20AND.pdf

IRON MEDIATED CLARIFICATION AND DECOLOURISATION OF SUGARCANE JUICE

By L.R. MADSEN II and D.F. DAY
Louisiana State UniversityAgricultural Center Audubon Sugar Institute, St. Gabriel, La. 70776  Lmadsen@agctr.lsu.edu

KEYWORDS: Colour, Removal, Clarification, Iron.

Abstract

IN ORDER TOoperate most profitably, the sugar producers in Louisiana wish to engage in a cooperative arrangement with the sugar refineries. Because the sugar refinery is an industrial scale decolouriser that operates using natural gas as fuel, it makes sense that sugar with less colour, produced using bagasse-power, would likely have greater profit margins. The removal of phenolic colorants from raw juice using native cane protein as a vehicle and Fe3+ as an oxidative catalyst was studied. Colour was removed as phenolprotein conjugates which rapidly precipitated with the addition of a cationic flocculant. The decanted juice was clarified via cold-liming. The treatment yielded clarified juice with up to 70% lower colour than hot-liming juice. It appears that the phenolics were oxidised by Fe3+ which engaged a REDOX cycle yielding quinoid species. The free N-ε amino groups of lysine in the albuminoid proteins appeared to add to the quinones.  Stoichiometry indicated a degree of polymerisation of eight. Oligomer formation ceased at this length which appeared sufficient to facilitate irreversiblecross-linking and/or capping of the protein. The aggregates of iron, lignol(s) and protein were insoluble and precipitated. The process was tested in a 150 L settling clarifier which was operated in both pulsed and continuous modes. The method scaled well and the product juice exhibited 50–60% less colour than a cold-limed control when Fe3+ was applied in quantities ranging from 100–200 mg/L.

Source http://www.issct.org/pdf/proceedings/2010/2010%20Madsen,%20IRON%20MEDIATED%20CLARIFICATION%20AND%20DECOLOURISATION%20OF%20SUGARCANE%20JUICE.pdf

MONITORING THE HARVESTING OF SUGARCANE AND GENERATION OF YIELD MAPS IN REAL TIME

By J.A. CARBONELL, C.A. OSORIO and J.M. RAMÍREZ 

Colombian Sugarcane Research Center, 
CENICAÑA, A.A. 9138, Cali, Colombia, South America

jacarbonell@cenicana.org

Abstract 

IN A GIVEN area or plantation it is common to determine the variability in production that
exists between harvested sugarcane fields or lots.
The agroindustrial sugar sector in the Cauca River Valley of Colombia has
appropriate mechanisms for determining and managing the variability of production among
the cane lots, but it has not had sufficient alternatives for determining the variability within
them.
At present, the preharvest task of cutting the cane is done manually in most of the
area, while the subsequent lifting of the stalks is done with self-driven equipment.
CENICAÑA has developed a system that can beinstalled on the cane lifters, which records

the weight of each bundle and its geographic position.
The data are stored and transmitted by cell phone to a computer where they can be
visualised for carrying out a precise monitoring of the harvest and generating yield maps.
This work describes the structure of the system developed, the methodology for
obtaining and transmitting the data, and how to interpret and analyse the yield maps.
An analysis of a field harvest, for which it is known where there was fertilisation and
where not, shows the value of each weight recorded.
In this case, the best estimate of the production in the field is obtained by averaging
the data from six consecutive bundles.
Both the system for obtaining the data and the methodology for their analyses and the

generation of yield maps can be implemented in other agricultural sectors.

KEYWORDS: Sugarcane, Precision Agriculture, Yield Mapping, 

Wholestalk Weigh System, Harvest Monitoring. 

www.issct.org

Agricultural Engineering Proc. Int. Soc. Sugar Cane Technol., Vol. 27, 2010 

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