scholarly journals Viruses, prokaryotes and biochemical composition of organic matter in different types of mucilage aggregates

2007 ◽  
Vol 49 ◽  
pp. 15-23 ◽  
Author(s):  
L Bongiorni ◽  
M Armeni ◽  
C Corinaldesi ◽  
A Dell’Anno ◽  
A Pusceddu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Biochemical Composition ◽  
Different Types

scholarly journals Bioactive Compounds from Hermetia Illucens Larvae as Natural Ingredients for Cosmetic Application

Biomolecules ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 976
Author(s):  
Cíntia Almeida ◽  
Patrícia Rijo ◽  
Catarina Rosado
Keyword(s):  
Organic Matter ◽  
Biochemical Composition ◽  
Food Industry ◽  
Web Of Science ◽  
Cosmetic Products ◽  
Hermetia Illucens ◽  
Different Types ◽  
Potential Applicability ◽  
Hermetia Illucens Larvae ◽  
Made In

Due to the sustainable organic matter bioconversion process used as substrate for its development, the Hermetia illucens (Linnaeus) larvae biomass is considered a source of compounds with high aggregate value and quite a promising market. The materials that can be extracted from H. illucens larvae have opened the door to a diverse new field of ingredients, mainly for the feed and food industry, but also with potential applicability in cosmetics. In this review we succinctly describe the larval development and rearing cycle, the main compounds identified from different types of extractions, their bioactivities and focus on possible applications in cosmetic products. A search was made in the databases PubMed, ScienceDirect and Web of Science with the terms ‘Hermetia illucens’, ‘bioactives’, ‘biochemical composition’ and ‘cosmetics ingredients’, which included 71 articles published since 1994.

Characterization of atrazine binding to dissolved organic matter of soil under different types of land use

2018 ◽  
Vol 147 ◽  
pp. 1065-1072 ◽  
Author(s):  
Long-Ji Zhu ◽  
Yue Zhao ◽  
Yan-Ni Chen ◽  
Hong-Yang Cui ◽  
Yu-Quan Wei ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Different Types

scholarly journals Influence of bryophyte biomass and organic matter quantity on the abundance and richness of oligochaetes in forest streams with different phytophysiognomies in southeastern Brazil

2016 ◽  
Author(s):  
Luciana Falci Theza Rodrigues ◽  
Felipe Silveira Leite ◽  
Roberto Da Gama Alves
Keyword(s):  
Organic Matter ◽  
Southeastern Brazil ◽  
Tropical Region ◽  
Positive Relation ◽  
Semideciduous Forest ◽  
Different Types ◽  
Ecological Importance ◽  
Forest Streams ◽  
Favorable Conditions ◽  
Seasonal Semideciduous Forest

<p>Aquatic oligochaetes can be found associated with different types of substrates; including bryophytes (mosses and liverworts) adhered to stones in lotic ecosystems. However, little information is available on the association between oligochaetes and bryophytes in tropical region. Therefore, the aims of this study were: to investigate whether the assemblages of oligochaetes respond to variation in the biomass of bryophytes and quantity of particulate organic matter (POM) present on these plants; verify differences in the composition of oligochaetes in streams flowing through areas with two phytophysiognomies (rocky field and seasonal semideciduous forest). The samples were collected from five first-order streams in the southeast of the state of Minas Gerais. Six samples of bryophytes adhered to stones were obtained from each stream. A total of 1586 oligochaetes were collected and 11 taxa were identified, belonging to the families Naididae and Enchytraeidae. The most abundant taxa were <em>Bothrioneurum</em> (37.95%) and Enchytraeidae (33.01%). A positive relation was observed between oligochaete abundance and POM in two streams (Ibitipoca I and Ibitipoca III) and a positive relation was found between oligochaete abundance and bryophyte biomass in one stream (Ibitipoca I). The composition of the fauna varied within and between the phytophysiognomies studied. The results show that the oligochaetes find favorable conditions to establish themselves in bryophytes, evidencing the ecological importance of these plants as habitat for invertebrates.</p>

The duplicity of floc strength

2004 ◽  
Vol 50 (12) ◽  
pp. 63-70 ◽  
Author(s):  
P. Jarvis ◽  
B. Jefferson ◽  
S. Parsons
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Laser Diffraction ◽  
Growth Potential ◽  
Small Scale ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Growth Behaviour ◽  
Different Types ◽  
Floc Strength

The breakage of flocs is dependent upon the strength of the bonds holding the aggregate together. The present work describes the breakage and re-growth behaviour of three different types of floc, these were: 1) coagulant precipitate flocs, 2) turbidity flocs and 3) organic matter flocs. Floc aggregates were exposed to increased levels of shear on a conventional jar tester and the sizes of the flocs were observed dynamically using a laser diffraction instrument. The organic flocs showed most resistance to breakage across the whole range of shears under investigation. The dynamic procedure provided detailed information on particle size distributions (PSD). Large and small scale degradation events could be identified from analysis of the PSD data. All of the flocs under investigation showed little re-growth potential after breakage. The precipitate and organic flocs showed slightly better re-aggregation of the small floc sizes.

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