Evaluation of biomass

Singh, Ajmer; Kuhad, Ramesh Chander; Sahai, V.; Ghosh, Prasanta Kumar

doi:10.1007/bfb0008733

Cited by 21 publications

(22 citation statements)

References 144 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Utilizou-se o método direto, segundo SINGH et al (22). Alíquotas de 20 mL do caldo de cana inoculado foram centrifugadas a 1600 x g a 5 °C por 30 minutos.…”

Section: Determinação Da Concentração Celularunclassified

Influência Do Grau Alcoólico E Da Acidez Do Destilado Sobre O Teor De Cobre Na Aguardente De Cana

Boza¹,

Horii²

2000

B. do CEPPA

View full text Add to dashboard Cite

O uso de cobre na confecção de destiladores e acessórios para a indústria de bebidas destiladas favorece a qualidade sensorial da bebida. O presente trabalho teve por escopo correlacionar o teor de cobre na aguardente de cana com o grau alcoólico e a acidez do destilado. Constatou-se que os teores de cobre durante a destilação acompanham os teores de acidez do destilado, encontrando-se ambos em maior concentração na fração cauda. Cortando-se a destilação do produto com alto grau alcoólico os teores de acidez e de cobre são reduzidos. INTRODUÇÃOA presença de cobre nas bebidas destiladas tem sido um dos problemas intrínsecos à sua produção, pois desde o início da elaboração de bebidas fermento-destiladas, o cobre é o material mais extensivamente utilizado nas construções de alambiques. Tal fato se deve às vantagens que apresenta, ou seja, resistência à corrosão e boa condução de calor, além de reagir com alguns componentes do vinho e atuar como catalisador em reações altamente favoráveis às características sensoriais da bebida (9).Nas aguardentes brasileiras o cobre aparece com freqüência, porém a legislação atual (4) permite o limite máximo de 5 mg/L, o que pode ser facilmente garantido com higienização correta e constante dos equipamentos de destilação. Entretanto, a presença de cobre e a falta de padrões de qualidade têm sido os principais obstáculos à sua exportação, pois a maioria dos países importadores não aceita bebidas contaminadas por cobre (5, 6).

show abstract

“…Utilizou-se o método direto, segundo SINGH et al (22). Alíquotas de 20 mL do caldo de cana inoculado foram centrifugadas a 1600 x g a 5 °C por 30 minutos.…”

Section: Determinação Da Concentração Celularunclassified

Influência Do Grau Alcoólico E Da Acidez Do Destilado Sobre O Teor De Cobre Na Aguardente De Cana

Boza¹,

Horii²

2000

B. do CEPPA

View full text Add to dashboard Cite

show abstract

“…However, evaluating microbial biomass with direct counting or indirect physical/chemical methods are generally complicated, time consuming 1,5 , and taxa-specific evaluation with these traditional methods is even impossible. DNA is a fundamental constituent of all organisms and showed close relation to biological productivity 20 , and therefore the content of DNA has also been used as an indicator of microbial biomass 6,21 .…”

Section: Discussionmentioning

confidence: 99%

“…Increasing evidence suggest that biomass evaluation has historically been an important ecological issue, which provides fundamental knowledge to reveal structural and functional roles of target organisms in an ecosystem 1,2 . It also gives us valuable information to facilitate ecosystem management and enable prediction of some potential ecological risk.…”

Section: Introductionmentioning

confidence: 99%

“…Classical direct biomass evaluation methods (e.g., viable count, epifluorescence filter technique, coulter counter, and electron microscopy) mainly based on measuring cell mass/number 1 , and traditional indirect quantification usually on the basis of specific components (e.g., protein, carbon/phosphate, ATP) 3 or some metabolic activities (e.g., O 2 uptake, CO 2 production) 4 . These methods are generally timeconsuming and often accompany with large errors 5 .…”

Section: Introductionmentioning

confidence: 99%

“…These methods are generally timeconsuming and often accompany with large errors 5 . Furthermore, evaluation may become more complicated and inaccurate when insoluble substrates are employed 1 . Although on-line monitoring techniques (e.g., microcalorimetry, fluorescence, spectroscopy, electrical properties) are recently been developed, there still lack of ideal monitor sensor 2 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tetrahymena-specific biomass evaluation with a DNA-based method

Yan¹,

Yu²,

Dai³

2013

ScienceAsia

View full text Add to dashboard Cite

Evaluating the biomass of a specific taxon or that of a certain nutritional level is especially important for understanding an ecosystem. Although various methods are available, there is still a lack of a universally accepted approach for taxa-specific biomass evaluation. Taking cultured unicellular Tetrahymena as an example, the present study is aimed at exploring and highlighting a DNA-based method for taxa-specific biomass estimation. Results indicated that the Tetrahymena DNA yield increased linearly with increasing number of Tetrahymena cells (p < 0.001). The intra and inter real-time quantitative PCR (Q-PCR) assays were highly reproducible, and Q-PCR quantifying 18S rDNA could detect an equivalent quantity of a single cell or less. Tetrahymena-specific biomass then can be determined according to the rDNA copies quantified by Q-PCR (p < 0.002), considering both of species richness and evenness (indicated by the pooled cells of Tetrahymena species with different ratios). Observations of the present study together with some others suggest that it is possible to quantify a target micro-biomass in natural ambience via specifically-amplified genes.

show abstract

Quantification of microbial productivity via multi-angle light scattering and supervised learning

Jones

Young

Taylor

et al. 1998

Biotechnol. Bioeng.

View full text Add to dashboard Cite

This article describes the use of chemometric methods for prediction of biological parameters of cell suspensions on the basis of their light scattering profiles. Laser light is directed into a vial or flow cell containing media from the suspension. The intensity of the scattered light is recorded at 18 angles. Supervised learning methods are then used to calibrate a model relating the parameter of interest to the intensity values. Using such models opens up the possibility of estimating the biological properties of fermentor broths extremely rapidly (typically every 4 sec), and, using the flow cell, without user interaction. Our work has demonstrated the usefulness of this approach for estimation of yeast cell counts over a wide range of values (105–109 cells mL−1), although it was less successful in predicting cell viability in such suspensions. © 1998 John Wiley & Sons, Inc. Biotechnol Bioeng 59:131–143, 1998.

show abstract

Evaluation of biomass

Cited by 21 publications

References 144 publications

Influência Do Grau Alcoólico E Da Acidez Do Destilado Sobre O Teor De Cobre Na Aguardente De Cana

Influência Do Grau Alcoólico E Da Acidez Do Destilado Sobre O Teor De Cobre Na Aguardente De Cana

Tetrahymena-specific biomass evaluation with a DNA-based method

Quantification of microbial productivity via multi-angle light scattering and supervised learning

Contact Info

Product

Resources

About