Wszystkie pola: bast fibre - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Extraction of Tannic Acid from Kenaf Bast Fibre using Ultrasonic Assisted Extraction
Autorzy:: Mohamad, Mardawani
Ibrahim, H. A.
Nasir, M. F. M.
Mohidem, Nur Atikah
Shoparwe, N. F.
Teo, Pao Ter
Masri, Mohamad Najmi
Irfan, Abd Rahim
Powiązania:: https://bibliotekanauki.pl/articles/2134102.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ultrasonic assisted extraction
UAE
sonication time
duty cycle
extraction process
kenaf bast fibre
Opis:: Tannic acid or tannin, type of phenolic compound contains in kenaf bast fibre. Conventional extraction has certain limitations in terms of time, energy, and solvent consumption. Ultrasound assisted extraction (UAE) can extract bioactive components in shorter time, low temperature, with lesser energy and solvent requirement. UAE as alternative extraction technique is better equipped to retain the functionality of the bioactive compounds. In this study, the conditions for ultrasound assisted extraction (UAE) of tannic acid from kenaf bast fibre by assessing the effect of sonication time and different duty cycles were optimized. The use of ultrasound to extract tannic acid from kenaf bast fiber was evaluated. Ultrasound-assisted extraction (UAE) was carried out using ethanol as solvent to intensify the extraction efficacy. Phytochemical screening was conducted to identify the presence of tannic acid in extracts. The extracts then were analyzed using High-Performance Liquid Chromatography (HPLC) and Scanning Electron Microscopy (SEM). It was found that 0.2429 mg/mL of tannic acid was obtained under the extraction conditions of extraction temperature of 40℃, sonication time of 20 minutes and duty cycle of 50%. From SEM analysis, it was found that the raw sample demonstrated rough surface and no porous but kenaf bast fibre display smoother surface with less impurities and few pores appeared after the extraction process using UAE. These results indicate that ultrasound-assisted extraction is an efficient method for extracting tannic acid from kenaf bast fibre with the advantages of lower extraction time and higher extraction yield.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 3; 1061--1066
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Characterization of the Kenyan Hibiscus sabdariffa L. (Roselle) Bast Fibre
Charakterystyka włókien łykowych kenijskiej ketmii szczawiowej (Hibiscus sabdariffa L.)
Autorzy:: Mwasiagi, J. I.
Yu, C. W.
Phologolo, T
Waithaka, A.
Kamalha, E.
Ochola, J. R.
Powiązania:: https://bibliotekanauki.pl/articles/231606.pdf
Data publikacji:: 2014
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:: Hibiscus sabdariffa L.
roselle
bast fibre
fibre properties
FTIR
SEM
Ketmia szczawiowa
włókna łykowate
właściwości włókien
Opis:: Hibiscus sabdariffa L. (roselle) is grown in Kenya for its flower and calyx, which are used in the beverage industry. Roselle bast fibre has, however, not been commercially exploited. After harvesting the flowers and calyx the stem together with the bark is used as firewood. This paper reports the characteristics of bast fibres in Hibiscus sabdariffa L. (roselle) grown in Kenya. The bast fibre was characterised by studying its physical and chemical characteristics. The physical characteristics investigated included tensile properties, fineness and surface morphology. An investigation into the type of chemical ingredients present in the fibre was also undertaken. The data obtained in this study indicated that the roselle plant grown in Kenya can produce bast fibres of comparable properties to the kenaf grown in Asian countries.
Hibiscus sabdariffa L. uprawiany jest w Kenii dla kwiatów I kielichów, które stosowane są do produkcji napojów. Włókna łykowe ketmii szczawiowej nie znalazły jak dotychczas zastosowania przemysłowego. Praca przedstawia właściwości chemiczne i fizyczne uzyskanych włókien łykowych. Z właściwości fizycznych badano wytrzymałość, średnicę włókien i morfologię powierzchni. Badania chemiczne określiły zawartość różnych składników we włóknach. Na podstawie przeprowadzonych badań stwierdzono, że właściwości włókien uzyskanych z ketmii szczawiowej uprawianej w Kenii są porównywalne z właściwościami włókien ketmii konopiowatej uprawianej w Azji.
Źródło:: Fibres & Textiles in Eastern Europe; 2014, 3 (105); 31-34
1230-3666
2300-7354
Pojawia się w:: Fibres & Textiles in Eastern Europe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evaluating the performance of hemp bast fibres in the production of packaging paper using different wastepaper blends
Autorzy:: Yaylali, Dilek
Uraz, Canan
Gümüşkaya, Esat
Powiązania:: https://bibliotekanauki.pl/articles/2201344.pdf
Data publikacji:: 2022
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:: Hemp bast fibre
wastepaper
pulp
packaging paper
Opis:: The predicted scarcity of wood-based fibre supplies has necessitated the search for alternative sources including non-woods by paper manufacturers. As a raw material for pulping, hemp bast fibre has some potential. To provide a guide for the pulp and paper industries, the suitability of hemp bast fibres for the pulp and paper industries was evaluated in this study, and blending trials with wastepaper pulp were conducted. In the hemp bast fibre preparation, the length of the fibres was first reduced to 4 mm. Subsequently, kraft pulping was applied to them. Along with the preparation of wastepaper pulps, hemp bast fibres and wastepaper handsheets were prepared according to a blending plan. Finally, the handsheets were subjected to paper strength tests. The properties of raw, cooked and beaten hemp bast fibres were investigated by characterisation methods such as optical microscopy, X-ray diffraction and Fourier-transform infrared spectroscopy. Additionally, carbohydrate components, solubility and ash content tests were run on raw hemp bast fibres. As a result of the experiments and analyses, the targeted results were achieved. Following the resolution of the fibrillation problem, it was determined that hemp bast fibre pulp can be used in adequate blends of wastepaper pulp when the strength values of the end product are desired to be increased (including CMT, CCT, RCT, SCT, stiffness and tear resistance) or decreased (air resistance).
Źródło:: Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2022, 65, 209; Art. no. 1644-3985.400.02
1644-3985
Pojawia się w:: Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:: Biblioteka Nauki

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