Jackfruit Taxonomy and Waste Utilization

Sundarraj, Antony Allwyn; Ranganathan, Thottiam Vasudevan

doi:10.5958/2229-4473.2018.00009.5

Cited by 17 publications

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“…Paper is an ideal candidate, it comes from nature, and its main component is cellulose micro-and nanofibers. [38] However, generating periodic nanostructures for structural colors takes a lot of work. Paper cannot be softened by heat or common solvents.…”

Section: Introductionmentioning

confidence: 99%

“…[36,37] Cellulose is an ideal substrate for structural color because it is the most abundant, renewable, and biodegradable natural polymer on Earth. [38] To date, structural colors on cellulose materials only succeed in cellulose nanocrystals by assembling them in a way like liquid crystals. [31,[39][40][41][42] But they suffer from the expensive production process of nanocrystals and the difficulties in microstructure tuning required for multicolor Structural colors are recognized as environmentally friendly colors compared with traditional pigments and dyes.…”

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Eco‐Friendly Color Printing Using Transparent Wood Paper

Chen

Huang

et al. 2023

Advanced Optical Materials

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periodic structures, leading to specific light behaviors of grating diffraction or Bragg reflection or photonic band gap reflection. [14][15][16][17][18][19] This indicates that the structural color is mainly related to the refractive index contrast between materials and their arrangement in space. Compared with traditional dyes and pigments, structural color doesn't require toxic metal ions or organic component and will never fade, unless the micro/nano structures are destroyed. The structural color opens up a new way to produce a permanent, bright, and environmentally friendly color. Many efforts have been made in material and structural designs to improve the color vibrancy and the resolution of color prints. [20,21] High-saturated, long-lasting structural colors have been produced through various materials, and multiple applications have been developed, [6,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] such as dynamic color display and optical anticounterfeiting. Polymers are commonly used in structural color prints and corresponding substrate materials because of their convenient and mature processing technologies by heat, light, solvent, etc. [23,35] However, most polymers come from the petrochemical industry and cause environmental pollution due to difficulties in degrading in nature. [36,37] Cellulose is an ideal substrate for structural color because it is the most abundant, renewable, and biodegradable natural polymer on Earth. [38] To date, structural colors on cellulose materials only succeed in cellulose nanocrystals by assembling them in a way like liquid crystals. [31,[39][40][41][42] But they suffer from the expensive production process of nanocrystals and the difficulties in microstructure tuning required for multicolor Structural colors are recognized as environmentally friendly colors compared with traditional pigments and dyes. However, their structural substrates are usually made of polymers or solid materials that are difficult to decompose naturally. Finding high-performance bio-degradable substrates is essential to protect the environment. Transparent wood paper is a competitive candidate because of its excellent biodegradability, high transparency, and strength. Here, it is firstly demonstrated that structural color prints can be fabricated monolithically on transparent wood paper. By mimicking the color generation structures in nature, nanostructures are imprinted on the surface of delignified wood and exhibit diverse structural colors. Three basic colors of red, green, and blue are demonstrated, and the colors can be continuously tuned by the periodicity and observation angle. Vivid color prints can be realized on the transparent wood paper by structural design. The structural colored transparent wood paper is flexible and bendable, and colors will not fade after 12-month exposure to natural sunshine. Furthermore, the structural color prints on transparent wood paper are biodegradable and can be discarded directly after use. Both the structural colored relief and the trans...

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Section: Introductionmentioning

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Eco‐Friendly Color Printing Using Transparent Wood Paper

Chen

Huang

et al. 2023

Advanced Optical Materials

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“…Jackfruit (Artocarpus heterophyllus) comes from the mulberry family (Moraceae) and is believed to originate from the evergreen forest in Western Ghast, India [1]. Jackfruit is an…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of Pantoea stewartii subspecies stewartii causing jackfruit-bronzing disease in Malaysia

et al. 2020

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Jackfruit-bronzing is caused by bacteria Pantoea stewartii subspecies stewartii (P. stewartii subsp. stewartii), showing symptoms of yellowish-orange to reddish discolouration and rusty specks on pulps and rags of jackfruit. Twenty-eight pure bacterial strains were collected from four different jackfruit outbreak collection areas in Peninsular Malaysia (Jenderam, Maran, Muadzam Shah and Ipoh). Positive P. stewartii subsp. stewartii verification obtained in the study was based on the phenotypic, hypersensitivity, pathogenicity and molecular tests. Multilocus sequence analysis (MLSA) was performed using four housekeeping genes (gyrB, rpoB, atpD and infB) on all 28 bacterial strains. Single gyrB, rpoB, atpD and infB phylogenetic trees analyses revealed the bootstrap value of 99-100% between our bacterial strains with P. stewartii subsp. stewartii reference strains and P. stewartii subsp. indologenes reference strains. On the other hand, phylogenetic tree of the concatenated sequences of the four housekeeping genes revealed that our 28 bacterial strains were more closely related to P. stewartii subsp. stewartii (99% similarities) compared to its close relative P. stewartii subsp. indologenes, although sequence similarity between these two subspecies were up to 100%. All the strains collected from the four collection areas clustered together, pointing to no variation among the bacterial strains. This study improves our understanding and provided new insight on the genetic diversity of P. stewartii subsp. stewartii associated with jackfruit-bronzing in Malaysia.

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“…Artocarpus is a genus of roughly sixty trees and shrubs of Southeast Asian and Pacific origin, belonging to the mulberry family, Moraceae 1,2 . Jackfruit was originally from India and spread out into tropic regions, including Indonesia 3,4 .…”

Section: Introductionmentioning

confidence: 99%

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2018

IJPSR

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Jackfruit peel is one among the under-utilized waste materials. In the present study, cellulose was extracted from de-pectinated peel. The peel was treated with alkali followed by a chemical process treatment. The yield of jackfruit cellulose was 27g / 100g of dry matter. Water and oil holding capability was a good retention value and higher hydration capacities of cellulose. The bulk, true densities and carr's index of cellulose were 0.17 ± 0.05 g/ml; 0.005 g/ml and 10.561%. Jackfruit cellulose foaming capacity was 2.99 % at pH 9 and foaming stability was maintained at pH 7, until the end of time (2h). Jackfruit peel as a potential source of natural cellulose has been comparing favourably with commercial grade cellulose used for food, pharmaceutical, and cosmetic applications.

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Jackfruit Taxonomy and Waste Utilization

Cited by 17 publications

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Eco‐Friendly Color Printing Using Transparent Wood Paper

Eco‐Friendly Color Printing Using Transparent Wood Paper

Genetic diversity of Pantoea stewartii subspecies stewartii causing jackfruit-bronzing disease in Malaysia

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