The constitution of the primary alcohols, fatty acids and paraffins present in plant and insect waxes

Chibnall, Albert Charles; Piper, Stephen Harvey; Pollard, A.; Williams, Edward F.; Sahai, P

doi:10.1042/bj0282189

Cited by 189 publications

(32 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Occasionally, compounds considered to be cuticular components are found in organeiles such as chloroplasts (9). Moreover, Chibnall (1,2) stated that a group of noncuticular leaf waxes exist which are not cuticle excretions, but constitute an integal part of the general fat phase of leaf cells. The long chain, primary components of the "inside wax" included C30 compounds, however, it is possible that there was contamination frm the cuticle during extraction.…”

Section: Resultsmentioning

confidence: 99%

Effect of Triacontanol on Plant Cell Cultures in Vitro

Hangarter¹,

Ries²,

Carlson

1978

Plant Physiol.

View full text Add to dashboard Cite

Triacontanol ICH.(CH2)2sCH2OHI increased growth in vitro of cell cultures of haploid tobacco (Nicotiana tabacum). The fresh weight of cell cultures of tomato (Lycopersicon esculentum), potato (Solanum tuberosum), bean (Phaseolus vulgaris), and barley (Hordeum vulgare x H. jubatum) was also increased. The increase in growth of tobacco callus seems to have been due to an increase in cell number. Another long chain alcohol, octocosanol ICH(CH2)2fiCH2OHI, did not increase the growth of tobacco cell cultures.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Triacontanol on Plant Cell Cultures in Vitro

Hangarter¹,

Ries²,

Carlson

1978

Plant Physiol.

View full text Add to dashboard Cite

show abstract

“…That knowledge of the constituents of hydrolysed beeswax is far from complete both qualitatively and quantitatively has prompted the present investigation of beeswax by methods previously employed for wool wax (Domning, BEESWAX ALCOHOLS I Composition (%) Assigned to Fraction Name and Composition assigned to Fraction by by Chibnall et al (1934) Gascard and Damoy (1923) ------I 2 I 6 I 2 I C3. I C3a / C3.…”

Section: Introductionmentioning

confidence: 99%

Studies in Waxes. XVIII. Beeswax: A Spectroscopic and Gas Chromatographic Examination

Downing¹,

Kranz²,

Lamberton³

et al. 1961

Aust. J. Chem.

View full text Add to dashboard Cite

S m r y A quantitative examination has been made of the components of hydrolysed beeswax.This was achieved by separation into hydrocarbons, monohydric alcohols, " diols ", acids, and hydroxyacids. The alcohol and acid fractions were reduced to the corresponding hydrocarbon mixtures and these together with the naturally occurring hydrocarbons were examined by gas chromatography, which demonstrated their straight-chain character and gave the chain lengths and percentage composition of the components.

show abstract

“…fecal (externo) ou da digestibilidade (interno) foi inicialmente proposto por Mayes & Lamb (1984). Os alcanos das plantas são encontrados na cera cuticular (Chibnall et al, 1934) e são constituídos, predominantemente, por cadeias de carbonos ímpares, de 25 a 35 carbonos. O interesse pela composição química da cera cuticular das plantas aumentou quando as técnicas analíticas, principalmente a cromatografia gasosa e a líquida, se tornaram mais acuradas.…”

Section: A) B)unclassified

Avanços metodológicos na determinação do consumo de ruminantes em pastejo

et al. 2007

View full text Add to dashboard Cite

RESUMO -Avanços metodológicos são, usualmente, conseqüência direta de avanços conceituais e tecnológicos.No caso da estimativa do consumo em pastejo, os recentes avanços conceituais relativos ao processo de busca e apreensão da forragem pelo ruminante evidenciaram a importância da unidade básica do consumo -o bocado -, e dos fatores limitantes ao consumo que ocorrem antes da ingestão da forragem pelo animal em pastejo. A abordagem reducionista do processo de pastejo, aliada à sua hierarquização espaço-temporal, trouxeram uma nova concepção de como o animal obtém o seu alimento do pasto. Destes modelos conceituais emergiram novas variáveis que requerem novos procedimentos experimentais e analíticos. Neste contexto, importantes avanços têm ocorrido. Este artigo apresenta e discute os novos procedimentos que permitem estimar o consumo no curto prazo, assim como aqueles mais utilizados pela comunidade científica nacional para estimar o consumo no longo prazo. Adicionalmente, são feitas também considerações sobre o uso de animais ou de piquetes como unidades experimentais em experimentos de pastejo. Conclui-se que, apesar de ainda existir importantes barreiras metodológicas, os recentes avanços conceituais sobre o processo de pastejo, assim como dos procedimentos analíticos, geram fortes expectativas de avanço em curto e médio prazo na obtenção de estimativas qualificadas de consumo por animais em pastejo.Palavras chave: alcanos, bocado, estrutura do pasto, ingestão, óxido de cromo Advances in methods for determining animal intake on pasture ABSTRACT -Methodological advances are usually a direct consequence of conceptual and technical advances.In the case of animal intake on pasture, recent conceptual advances regarding the process of searching and apprehension of the forage by the ruminant provide insight regarding the importance of the basic unit of intake, the bite, and the importance of processes limiting intake that occur before the forage reaches the rumen. Applying a reductionist approach to the grazing process, along with its spatial-temporal hierarchy, brought a new conceptualization of how an animal obtains feed from pasture. From the conceptual models emerged new variables that required new experimental and analytical procedures. Within this context, important advances have occurred. This article describes the new procedures that allow to estimate the consumption on the short-term, as well as that most utilized by the national scientific community for estimating the consumption on the long-term. Procedure for estimating fecal production and digestibility are discussed, as well as the use of n-alkanes and other emerging techniques. Consideration is given to the use of animals or paddocks as experimental units in grazing experiments. The conclusions presented in this article do not differ from those of preceding articles regarding this subject. In a grazing condition, continuous intake is the "black box" to be revealed, complex by nature with regard to the animal as well as the pasture, and there are importa...

show abstract

The constitution of the primary alcohols, fatty acids and paraffins present in plant and insect waxes

Cited by 189 publications

References 12 publications

Effect of Triacontanol on Plant Cell Cultures in Vitro

Effect of Triacontanol on Plant Cell Cultures in Vitro

Studies in Waxes. XVIII. Beeswax: A Spectroscopic and Gas Chromatographic Examination

Avanços metodológicos na determinação do consumo de ruminantes em pastejo

Contact Info

Product

Resources

About