Tag Archives: intensification

1074-1085 B. Shershenkov and E. Suchkova
Upgrading the technology of functional dairy products by means of fermentation process ultrasonic intensification
Abstract |
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Upgrading the technology of functional dairy products by means of fermentation process ultrasonic intensification

B. Shershenkov* and E. Suchkova

ITMO University, Institute of Refrigeration and Biotechnologies, Department of Technology of Milk and Food Biotechnology, Lomonosov str., 9, 191002, St. Petersburg, Russia; *Correspondence: boris.shershenkov@list.ru

Abstract:

Intensification of milk fermentation without negative influence on product quality is a priority research direction in dairy industry. One of the perspective tools for solving this problem is usage of ultrasound. Careful selection of ultrasonic treatment regimens allows to activate lactic-acid bacteria metabolic activity and to improve the efficiency of dairy production. A number of cultivations were carried out for ultrasonic processing effect estimation on Lactococcus mixed culture, Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus symbiotic cultures that are often used for dairy fermentation. Milk with added starter culture was treated with ultrasound by means of ultrasonic homogenizer at a frequency of about 30 kHz. Processing duration varied from 1 to 3 minutes and ultrasound power varied from 2 to 8 W. Ultrasonication regimens of fermenting milk allowed accelerating of fermentative process by 10% and improving the quality of final product.

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153–164 S. Plantureux, A. Peeters and D. McCracken
Biodiversity in intensive grasslands: Effect of management, improvement and challenges
Abstract |

Biodiversity in intensive grasslands: Effect of management, improvement and challenges

S. Plantureux¹, A. Peeters² and D. McCracken³

¹UMR INPL(ENSAIA)-INRA Agronomie et Environnement Nancy-Colmar, 2 av. de la Foret de Haye, 54500 Vandoeuvre, France
²Laboratoire d'Ecologie des Prairies, Université Catholique de Louvain, Place Croix du Sud, 5 bte 1, B-1348 Louvain-la-Neuve, Belgique
³Land Economy Research Group, Scottish Agricultural College, Auchincruive, Ayr KA6 5HW, United Kingdom

Abstract:

Intensified grasslands are usually the dominant type of grassland in many countries in Europe but are generally of poor ecological value. Several management factors may affect biodiversity of these grasslands including fertilisation, grazing and cutting management. Their effects on grassland biodiversity are described in this paper. In most cases, intensive and profitable grass production from semi-natural grasslands appears to be incompatible with maintaining a high level of biodiversity. Two key questions then arise: how to restore biodiversity in intensive grasslands while limiting the technical and economical consequences? How to choose the target species on an objective basis? Some solutions are considered in the paper but it is suggested that 1) new tools (i.e. indicators) are required to evaluate the functions of biodiversity and to achieve biodiversity restoration goals and 2) in the short-term the research priority is to understand and predict biodiversity at the field and farm-scale.

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