Results 191 to 200 of about 891,311 (217)

[New cerebroside from leaves of pineapple].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2008
To study the chemical constituents of the leaves of pineapple.Chromatographic methods were used to isolate compounds from the leaves of pineapple and spectral methods were used to identify the structures of the isolated compounds.Compound 1 was isolated from the leaves of pineapple. It was identified as 1-O-beta-D-glucopyranosyl-(2S, 3R, 4E, 11E)-2-[(2(
Jin-Ping, Wang, Hong-Ying, Wang, Li-Jun, Du, Yi, Ding, Dong-Ming, Xing, Wei, Wang   +5 more
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REACTION MECHANISM OF PYROPHOSPHATE-DEPENDENT PHOSPHOFRUCTOKINASE FROM PINEAPPLE LEAVES

Journal of Food Biochemistry, 1993
Data obtained from initial velocity, product inhibition and dead-end inhibition patterns indicate that the pyrophosphate-dependent phosphofructokinase from pineapple leaves has a rapid equilibrium random mechanism with E:F6P:MgPPi and E:MgPPi:FBP dead-end complexes. The pH dependence of enzyme-reactant dissociation constants suggests that phosphates of
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Chemical analysis and pulping study of pineapple crown leaves

Industrial Crops and Products, 2006
Abstract The potential of the pineapple crown leaves as a pulp source was explored. Preliminary results showed that the semichemical mechanical process yielded a pulp of which handsheets without damage could not be made. However, the alkaline pulping process such as kraft or soda resulted in a pulp of which normal handsheets could be produced.
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Metabolic profile and cytotoxicity of non-polar extracts of pineapple leaves and chemometric analysis of different pineapple cultivars

Industrial Crops and Products, 2018
Abstract The use of co-products from the fruit agroindustry as a source of bioactive molecules presents economic advantages, since these compounds are highly available and inexpensive. Therefore, the present study aimed to evaluate their qualitative chemical composition followed by multivariate analysis, and to correlate the results with those of the
Jhonyson Arruda Carvalho Guedes, Elenilson de Godoy Alves Filho, Tigressa Helena Soares Rodrigues, Maria Francilene Souza Silva, Fernanda Vidigal Duarte Souza, Lorena Mara Alexandre e Silva, Ricardo Elesbão Alves, Kirley Marques Canuto, Edy Sousa de Brito, Cláudia do Ó Pessoa, Ronaldo Ferreira Nascimento, Guilherme Julião Zocolo   +11 more
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Study on structural and thermal properties of cellulose microfibers isolated from pineapple leaves using steam explosion

Journal of Environmental Chemical Engineering, 2019
In Thailand, pineapple leaves are one of the most common agricultural wastes after cultivation. The aim of this research was to understand effects of the steam explosion treatment conditions (steam pressure and treatment cycle) on properties of cellulose
S. Tanpichai, S. Witayakran, A. Boonmahitthisud   +2 more
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Properties of Cellulose Microfibers Extracted from Pineapple Leaves by Steam Explosion

Advanced Materials Research, 2015
The aim of this work is to compare properties of cellulose mats from pineapple leaf fibers with and without using the steam explosion method. Pineapple leaf fibers were divided into two groups. The first group was chemically treated with sodium hydroxide for 24 h, and directly used to prepare cellulose mats.
Suteera Witayakran, Supachok Tanpichai
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Non-Steady State Moisture Diffusion Flow in Homogenous Pineapple Leaves Particleboard

Advanced Materials Research, 2013
Non steady state diffusion flow is unstable movement of moisture in a material which changes with respect to time. Diffusion coefficient describes the rate at which water moves from the interior to the surface of the materials. Absorption and desorption are the variables that are used to determine the diffusion coefficient.
Mohd Ariff Jamaludin, Mohamad Nurul Azman Mohammad Taib, Mohd Nazarudin Zakaria, Masitah Abu Kassim, Nurul Syazana Zainuddin   +4 more
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[Studies on phenolic constituents from leaves of pineapple (Ananas comosus)].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2007
To study the phenolic constituents of the leaves of pineapple.Chromatographic methods were used to isolate compounds from the leaves of pineapple and spectroscopic methods were used to identify the structures of the isolated compounds.7 compounds, ananasate (1), 1-O-caffeoylglycerol (2), 1-O-p-coumaroylglycerol (3), caffeic acid (4), p-coumaric acid (5)
Wei, Wang, Yi, Ding, Dong-ming, Xing, Jin-ping, Wang, Li-jun, Du   +4 more
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Fabrication of Cellulose Powder Dielectric Composite Material using Pineapple Leaves Fiber

Journal of Advanced Research in Applied Sciences and Engineering Technology
Pineapple, known for its delicious taste and nutritional value, generates substantial waste in the form of cores, leaves, and skin, resulting in significant yearly accumulations. Efficient disposal of pineapple waste has become a critical challenge due to its increasing production and potential environmental pollution. The objective of this paper is to
null Rudraa Devi Giamasrow, null Nurhafizah Abu Talip Yusof, null Azahani Natasha Azman, null Norazwina Zainol, null Mohamad Shaiful Abdul Karim   +4 more
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Investigations on the fibers of pineapple [Ananas comosus (L). Merr.] leaves

Carbohydrate Research, 1981
Abstract Hemicelluloses were isolated from pineapple-leaf fibers under different conditions. Study of the properties of these hemicelluloses gave direct evidence of some ester linkages between the hemicellulose and the lignin in this fiber. An aldobiouronic acid was isolated from this fiber hemicellulose, and characterized as 2- O -(4- O -methyl-α- d
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