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Microwave Assisted Extraction For Bioactive Compounds

Author: Farid Chemat
Publisher: Springer Science & Business Media
ISBN: 1461448301
Size: 11.38 MB
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With increasing energy prices and the drive to reduce CO2 emissions, food industries are challenged to find new technologies in order to reduce energy consumption, to meet legal requirements on emissions, product/process safety and control, and for cost reduction and increased quality as well as functionality. Extraction is one of the promising innovation themes that could contribute to sustainable growth in the chemical and food industries. For example, existing extraction technologies have considerable technological and scientific bottlenecks to overcome, such as often requiring up to 50% of investments in a new plant and more than 70% of total process energy used in food, fine chemicals and pharmaceutical industries. These shortcomings have led to the consideration of the use of new "green" techniques in extraction, which typically use less solvent and energy, such as microwave extraction. Extraction under extreme or non-classical conditions is currently a dynamically developing area in applied research and industry. Using microwaves, extraction and distillation can now be completed in minutes instead of hours with high reproducibility, reducing the consumption of solvent, simplifying manipulation and work-up, giving higher purity of the final product, eliminating post-treatment of waste water and consuming only a fraction of the energy normally needed for a conventional extraction method. Several classes of compounds such as essential oils, aromas, anti-oxidants, pigments, colours, fats and oils, carbohydrates, and other bioactive compounds have been extracted efficiently from a variety of matrices (mainly animal tissues, food, and plant materials). The advantages of using microwave energy, which is a non-contact heat source, includes more effective heating, faster energy transfer, reduced thermal gradients, selective heating, reduced equipment size, faster response to process heating control, faster start-up, increased production, and elimination of process steps. This book will present a complete picture of the current knowledge on microwave-assisted extraction (MAE) of bioactive compounds from food and natural products. It will provide the necessary theoretical background and details about extraction by microwaves, including information on the technique, the mechanism, protocols, industrial applications, safety precautions, and environmental impacts.

Green Extraction Of Natural Products

Author: Farid Chemat
Publisher: John Wiley & Sons
ISBN: 3527676813
Size: 66.17 MB
Format: PDF, Mobi
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Extraction processes are essential steps in numerous industrial applications from perfume over pharmaceutical to fine chemical industry. Nowadays, there are three key aspects in industrial extraction processes: economy and quality, as well as environmental considerations. This book presents a complete picture of current knowledge on green extraction in terms of innovative processes, original methods, alternative solvents and safe products, and provides the necessary theoretical background as well as industrial application examples and environmental impacts. Each chapter is written by experts in the field and the strong focus on green chemistry throughout the book makes this book a unique reference source. This book is intended to be a first step towards a future cooperation in a new extraction of natural products, built to improve both fundamental and green parameters of the techniques and to increase the amount of extracts obtained from renewable resources with a minimum consumption of energy and solvents, and the maximum safety for operators and the environment.

Water Extraction Of Bioactive Compounds

Author: Herminia Dominguez
Publisher: Elsevier
ISBN: 0128096152
Size: 36.15 MB
Format: PDF
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Water Extraction of Bioactive Compounds: From Plants to Drug Development draws together the expert knowledge of researchers from around the world to outline the essential knowledge and techniques required to successfully extract bioactive compounds for further study. The book is a practical tool for medicinal chemists, biochemists, pharmaceutical scientists and academics working in the discovery and development of drugs from natural sources. The discovery and extraction of bioactive plant compounds from natural sources is of growing interest to drug developers, adding greater fuel to a simultaneous search for efficient, green technologies to support this. Particularly promising are aqueous based methods, as water is a cheap, safe and abundant solvent. The book is a detailed guide to the fundamental concepts and necessary equipment needed to successfully undertake such processes, supported by application examples and highlighting the most influential variables. Part 1 begins with a thorough introduction to plants as sources of drugs, highlighting strategies for the discovery of novel bioactive constituents of botanicals, the need for standardization and a move toward more rational and greener techniques in the field, the development of plant-based extraction processes and pretreatments for the efficient extraction. Part 2 then reviews a broad range of available techniques, including sections on conventional hot water extraction and pressurized hot water extraction in a range of settings. Intensified processes are then discussed in detail, including sections on microwave-assisted processes, ultrasound-assisted processes and enzyme assisted extraction. Covers the theoretical background and range of techniques available to researchers, helping them to select the most appropriate extraction method for their needs Presents up-to-date and cutting edge applications by international experts Highlights current use and future potential for industrial scale applications Offers a thorough introduction to plants as sources of drugs, highlighting strategies for the discovery of novel bioactive constituents of botanicals

Utilisation Of Bioactive Compounds From Agricultural And Food Production Waste

Author: Quan V. Vuong
Publisher: CRC Press
ISBN: 1351647598
Size: 73.13 MB
Format: PDF, Docs
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The large quantity of waste generated from agricultural and food production remains a great challenge and an opportunity for the food industry. As there are numerous risks associated with waste for humans, animals and the environment, billions of dollars are spent on the treatment of agricultural and food waste. Therefore, the utilisation of bioactive compounds isolated from waste not only could reduce the risks and the costs for treatment of waste, but also could potentially add more value for agricultural and food production. This book provides comprehensive information related to extraction and isolation of bioactive compounds from agricultural and food production waste for utilisation in the food, cosmetic and pharmaceutical industries. The topics range from an overview on challenges and opportunities related to agricultural and food waste, the bioactive compounds in the waste, the techniques used to analyse, extract and isolate these compounds to several specific examples for potential utilisation of waste from agricultural and food industry. This book also further discusses the potential of bioactives isolated from agricultural and food waste being re-utilised in the food, cosmetic and pharmaceutical industries. It is intended for students, academics, researchers and professionals who are interested in or associated with agricultural and food waste.

Marine Algae Extracts 2 Volume Set

Author: Se-Kwon Kim
Publisher: John Wiley & Sons
ISBN: 3527679596
Size: 39.30 MB
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Designed as the primary reference for the biotechnological use of macroalgae, this comprehensive handbook covers the entire value chain from the cultivation of algal biomass to harvesting and processing it, to product extraction and formulation. In addition to covering a wide range of product classes, from polysaccharides to terpenes and from enyzmes to biofuels, it systematically discusses current and future applications of algae-derived products in pharmacology, medicine, cosmetics, food and agriculture. In doing so, it brings together the expertise of marine researchers, biotechnologists and process engineers for a one-stop resource on the biotechnology of marine macroalgae.

Adaptive L Sung Partieller Differentialgleichungen

Author: Peter Deuflhard
Publisher: Walter de Gruyter
ISBN: 3110218038
Size: 37.98 MB
Format: PDF, Kindle
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Thistextbook expands the standard work on numerical mathematics to include the numerics of partial differential equations. The volume is intended for students of mathematics as well as physicists, chemists and engineers who are confronted with finding efficient solutions for complex application problems.

Lebensmittelphysik

Author: L.O. Figura
Publisher: Springer-Verlag
ISBN: 3540349901
Size: 76.25 MB
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Die Lebensmittelphysik befasst sich mit den physikalischen Eigenschaften der Lebensmittel und deren Erfassung. Die physikalischen Eigenschaften von Lebensmitteln spielen überall dort eine wesentliche Rolle, wo moderne lebensmitteltechnologische Verfahren für die Gewinnung der Rohstoffe oder die Herstellung eines Lebensmittels angewandt werden. Die Bestimmung physikalischer Größen von Lebensmitteln und Bedarfsgegenständen sind aus der Planung, Steuerung und Automatisierung der Herstellungsprozesse in der Lebensmittel-, Pharma- und Kosmetikindustrie und angrenzenden Bereichen nicht mehr wegzudenken. Neben der chemischen Qualitätskontrolle spielt die Bestimmung physikalischer Eigenschaften darüber hinaus eine wichtige Rolle bei der Bestimmung und Sicherung der Qualität unserer Lebensmittel. Der Konsument fordert zunehmend "weniger Chemie" in der Lebensmittelproduktion und große Bereiche der Lebensmittelindustrie werden diesen Wünschen in steigendem Maße entgegenkommen müssen, indem sie moderne physikalische Verfahren in der Produktion einsetzen. Auch hierfür ist ein grundlegendes Verständnis der physikalischen Eigenschaften von Lebensmitteln und den Möglichkeiten und Grenzen ihrer messtechnischen Erfassung eine unabdingbare Voraussetzung. Dieses Buch beschreibt die Lebensmittelphysik von Grund auf und orientiert sich hierbei ausschließlich an den Erfordernissen der Lebensmittelpraxis, ohne auf die wichtigen Grundlagen zu verzichten. Das Buch ist daher für Studenten der Lebensmittelchemie und -technologie an Universitäten und Fachhochschulen eine wichtige Quelle für die zukünftige Ausbildung. Auch Ingenieure, Technologen und Techniker in der Lebensmittelindustrie werden dieses Buch benutzen, um ihre Kenntnisse zu vertiefen oder grundlegendes Verständnis für neue physikalische Verfahren zu erwerben.

Immobilisierte Biokatalysatoren

Author: Winfried Hartmeier
Publisher: Springer-Verlag
ISBN: 3662078627
Size: 46.88 MB
Format: PDF, Kindle
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Obwohl oder gerade weil eine kaum mehr überschaubare Zahl von Publi kationen auf dem Gebiet der Immobilisierung von Biokatalysatoren existiert, ist es für den Anfänger, der einen Einstieg sucht, auf diesem Gebiet oft schwer, geeignete Informationen aus der Flut von Originalarbeiten herauszufinden. Einige gute, fast immer aber eng lischsprachige Monographien sind entweder außerordentlich umfang reich und teuer, oder sie behandeln nur ausgewählte Teilaspekte der Immobilisierung. Dem will die vorliegende Einführung abhelfen. Sie soll dem Leser zu einem raschen Überblick verhelfen und ihm den inzwischen abgesicherten Kenntnisstand nach Art eines kurzen Lehr buches vermitteln. Das Buch ist aus Erfahrungen in Vorlesungen, Praktika und Kursen entstanden. Es soll sich maßgeblich an Lernende wenden, auch wenn "Immobilisierte Biokatalysatoren" bisher noch nicht zum Stan dardrepertoire der Lehre an deutschen Universitäten und Fachhoch schulen gehören. Es ist jedoch die Oberzeugung des Autors, daß sich dies in den kommenden Jahren mit der wachsenden Bedeutung dieses Gebietes und mit der allgemeinen Etablierung der Biotechnologie an den Hochschulen ändern wird. Ober den Kreis der Studenten und Dozen ten hinaus wendet sich die Einführung aber auch an die vielen Natur wissenschaftler und Techniker der industriellen Praxis, die sich mit immobilisierten Biokatalysatoren befassen und sich dazu ein ent sprechendes Grundwissen aneignen wollen.