Recent progress in the utilization of industrial waste and by‐products of citrus fruits: A review

2018 ◽  
Vol 41 (8) ◽  
pp. e12895 ◽  
Author(s):  
Prasad Chavan ◽  
Avdesh Kumar Singh ◽  
Gagandeep Kaur
Keyword(s):  
Industrial Waste ◽  
Recent Progress ◽  
Citrus Fruits ◽  
By Products

Recent progress on immobilization technology in enzymatic conversion of marine by-products to concentrated omega-3 fatty acids

2021 ◽  
Author(s):  
Yi Liu ◽  
Deepika Dave
Keyword(s):  
Fatty Acids ◽  
Docosahexaenoic Acid ◽  
Eicosapentaenoic Acid ◽  
Recent Progress ◽  
Enzymatic Conversion ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Immobilization Technology ◽  
By Products

Marine by-products (heads, frames, trimmings, viscera, skin and scales) have been extensively investigated as sources of marine omega-3 fatty acids (mainly eicosapentaenoic acid and docosahexaenoic acid). Traditionally, extraction of fish...

scholarly journals The geological significance of novel anthropogenic materials: Deposits of industrial waste and by-products

Anthropocene ◽  
2019 ◽  
Vol 28 ◽  
pp. 100229
Author(s):  
Joris J. Dijkstra ◽  
Rob N.J. Comans ◽  
Jeroen Schokker ◽  
Michiel J. van der Meulen
Keyword(s):  
Industrial Waste ◽  
Geological Significance ◽  
By Products

Heavy oil-derived carbon for energy storage applications

2020 ◽  
Vol 8 (15) ◽  
pp. 7066-7082 ◽  
Author(s):  
Han Hu ◽  
Mingbo Wu
Keyword(s):  
Energy Storage ◽  
Heavy Oil ◽  
Recent Progress ◽  
Carbon Materials ◽  
Energy Storage Applications ◽  
By Products

Recent progress in constructing carbon materials using heavy oil-derived by-products for energy storage has been summarized.

scholarly journals Spheres of Hope, Packets of Doom: the Good and Bad of Outer Membrane Vesicles in Interspecies and Ecological Dynamics

2017 ◽  
Vol 199 (15) ◽  
Author(s):  
Jonathan B. Lynch ◽  
Rosanna A. Alegado
Keyword(s):  
Antimicrobial Activity ◽  
Horizontal Gene Transfer ◽  
Outer Membrane ◽  
Recent Progress ◽  
Membrane Vesicles ◽  
Stress Relief ◽  
Outer Membrane Vesicles ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
By Products

ABSTRACT Outer membrane vesicles (OMVs) are proteoliposome nanoparticles ubiquitously produced by Gram-negative bacteria. Typically bearing a composition similar to those of the outer membrane and periplasm of the cells from which they are derived, OMVs package an array of proteins, lipids, and nucleic acids. Once considered inconsequential by-products of bacterial growth, OMVs have since been demonstrated to mediate cellular stress relief, promote horizontal gene transfer and antimicrobial activity, and elicit metazoan inflammation. Recently, OMVs have gained appreciation as critical moderators of interorganismal dynamics. In this review, we focus on recent progress toward understanding the functions of OMVs with regard to symbiosis and ecological contexts, and we propose potential avenues for future OMV studies.

scholarly journals By-products of fruits processing as a source of phytochemicals

2009 ◽  
Vol 15 (4) ◽  
pp. 191-202 ◽  
Author(s):  
Sonja Djilas ◽  
Jasna Canadanovic-Brunet ◽  
Gordana Cetkovic
Keyword(s):  
Organic Acid ◽  
Dietary Fibre ◽  
Nutritional Value ◽  
Food Additives ◽  
Waste Materials ◽  
Citrus Fruits ◽  
Wide Range ◽  
Legal Restrictions ◽  
Valuable Compounds ◽  
By Products

The processing of fruits results in high amounts of waste materials such as peels, seeds, stones, and oilseed meals. A disposal of these materials usually represents a problem that is further aggravated by legal restrictions. Thus new aspects concerning the use of these wastes as by-products for further exploitation on the production of food additives or supplements with high nutritional value have gained increasing interest because these are high-value products and their recovery may be economically attractive. It is well known that by-products represent an important source of sugars, minerals, organic acid, dietary fibre and phenolics which have a wide range of action which includes antitumoral, antiviral, antibacterial, cardioprotective and antimutagenic activities. This review discusses the potential of the most important by-products of apple, grape and citrus fruits processing as a source of valuable compounds. The relevance of this topic is illustrated by a number of references.

scholarly journals NORM waste, cements, and concretes. A review

2021 ◽  
Vol 71 (344) ◽  
pp. e259
Author(s):  
F. Puertas ◽  
J. A. Suárez-Navarro ◽  
M. M. Alonso ◽  
C. Gascó
Keyword(s):  
Natural Radioactivity ◽  
Industrial Waste ◽  
Building Materials ◽  
Raw Materials ◽  
Health Hazard ◽  
Sustainable Construction ◽  
Steel Mill ◽  
Portland Cements ◽  
Iron And Steel ◽  
By Products

The use of industrial waste and/or by-products as alternative sources of raw materials in building materials has become standard practice. The result, more sustainable construction, is contributing to the institution of a circular economy. Nonetheless, all necessary precautions must be taken to ensure that the inclusion and use of such materials entail no new health hazard for people or their environment. Due to the processes involved in generating industrial waste/by-products, these alternative or secondary materials may be contaminated with heavy metals, other undesirable chemicals or high levels of natural radioactivity that may constrain their use. In-depth and realistic research on such industrial waste is consequently requisite to its deployment in building materials. This paper reviews the basic concepts associated with radioactivity and natural radioactivity, focusing on industrial waste/by-products comprising Naturally Occurring Radioactive Materials (NORM) used in cement and concrete manufacture. Updated radiological data are furnished on such waste (including plant fly ash, iron and steel mill slag, bauxite and phosphogypsum waste) and on other materials such as limestone, gypsum and so on. The paper also presents recent findings on radionuclide activity concentrations in Portland cements and concretes not bearing NORMs. The role of natural aggregate in end concrete radiological behaviour is broached. The radiological behaviour of alternative non-portland cements and concretes, such as alkali-activated materials and geopolymers, is also addressed.

scholarly journals Identification of Antioxidant Peptides in Enzymatic Hydrolysates of Carp (Cyprinus Carpio) Skin Gelatin

Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 97 ◽  
Author(s):  
Joanna Tkaczewska ◽  
Michal Bukowski ◽  
Paweł Mak
Keyword(s):  
Cyprinus Carpio ◽  
Industrial Waste ◽  
Antioxidant Properties ◽  
Enzymatic Digestion ◽  
Reversed Phase ◽  
Fish Processing ◽  
Antioxidant Peptides ◽  
Carp Cyprinus Carpio ◽  
By Products

The protein by-products from carp (Cyprinus carpio) are normally discarded as industrial waste during fish processing. The objective of this study was to identify and characterise the peptides with a potential antioxidant activity that are released from carp skin proteins during hydrolysis by the Protamex enzyme mixture. This study shows that a hydrolysate of carp skin gelatin and its reversed-phase chromatography fractions have strong in vitro antioxidant properties. Among these fractions, the alanine-tyrosine (Ala-Tyr) dipeptide was identified as the major compound with high antioxidant potential. The peptide has good stability during in vitro enzymatic digestion assay and can inhibit the angiotensin-converting enzyme (ACE). In conclusion, our study proves that both the unfractionated hydrolysate of carp skin gelatin and the above-mentioned Ala-Tyr dipeptide represents attractive novel compounds for the formulation of antioxidant foods.

scholarly journals Utilization of Industrial By-Products/Waste to Manufacture Geopolymer Cement/Concrete

2021 ◽  
Vol 13 (2) ◽  
pp. 873
Author(s):  
Numanuddin M. Azad ◽  
S.M. Samindi M.K. Samarakoon
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Industrial Waste ◽  
Cement Concrete ◽  
Granulated Blast Furnace Slag ◽  
Geopolymer Cement ◽  
Furnace Slag ◽  
By Products

There has been a significant movement in the past decades to develop alternative sustainable building material such as geopolymer cement/concrete to control CO2 emission. Industrial waste contains pozzolanic minerals that fulfil requirements to develop the sustainable material such as alumino-silicate based geopolymer. For example, industrial waste such as red mud, fly ash, GBFS/GGBS (granulated blast furnace slag/ground granulated blast furnace slag), rice husk ash (RHA), and bagasse ash consist of minerals that contribute to the manufacturing of geopolymer cement/concrete. A literature review was carried out to study the different industrial waste/by-products and their chemical composition, which is vital for producing geopolymer cement, and to discuss the mechanical properties of geopolymer cement/concrete manufactured using different industrial waste/by-products. The durability, financial benefits and sustainability aspects of geopolymer cement/concrete have been highlighted. As per the experimental results from the literature, the cited industrial waste has been successfully utilized for the synthesis of dry or wet geopolymers. The review revealed that that the use of fly ash, GBFS/GGBS and RHA in geopolymer concrete resulted high compressive strength (i.e., 50 MPa–70 MPa). For high strength (>70 MPa) achievement, most of the slag and ash-based geopolymer cement/concrete in synergy with nano processed waste have shown good mechanical properties and environmental resistant. The alkali-activated geopolymer slag, red mud and fly ash based geopolymer binders give a better durability performance compared with other industrial waste. Based on the sustainability indicators, most of the geopolymers developed using the industrial waste have a positive impact on the environment, society and economy.

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