Page 32 - FMT Dec Web

Packaging

alkali (NaOH) treated and bleached Thus cellulose being, the most References:
(NaOCl) to remove hemicelluloses, ancient and important natural
pectins, lignin, waxes, phenols, polymer available on the earth, has 1. Guillard, V., Gaucel, S., Fornaciari,
etc., in order to isolate chemically been seen drawing the attention in C., Angellier-Coussy, H., Buche, P., &
purified celluloses. This purified the form of a novel and advanced Gontard, N. (2018). The next generation
cellulose was acid hydrolysed with biomaterials of CNCs due to its of sustainable food packaging to
H₂SO₂ (60 wt%) to prepare CNCs. The renewability, biodegradability, preserve our environment in a
properties of cellulose nanocrystals abundance, and low cost nature. circular economy context. Frontiers
(CNCs) were characterized by On reinforcing CNCs as nanofillers in nutrition, 5, 121.
employing various techniques like in biopolymers, its nanoscale
morphological studies done through dimensions can form a nanoporous 2. Garavand, F., Rouhi, M., Razavi, S.
microscopies (Scanning Electron, entangled network, strong filler- H., Cacciotti, I., & Mohammadi, R.
Tramission Electro, & Atomic force), matrix interactions, homogenous (2017). Improving the integrity of
colloidal properties (Dynamic light structure formed with adequate natural biopolymer films used in food
scattering), crystallinity (X-ray dispersion of the CNCs in biopolymer packaging by crosslinking approach:
Diffractometry), thermal properties matrix, excellent barrier properties A review. International Journal of
(Thermogravimetric analyser). and mechanical properties. All Biological Macromolecules, 104, 687-
The crystallinity percentage of these features made the scientists, 707.
these CNCs were as high as 74.1% food researchers and technologists
along with thermal stability of for efficient application of CNCs 3. Sarwar, M. S., Niazi, M. B. K., Jahan,
more than 200 °C, negative zeta as sustainable food packaging Z., Ahmad, T., & Hussain, A. (2018).
potential values (< -30 mV), and acid materials. A lot of residual waste Preparation and characterization
hydrolysis yield of 65.55%, resulted obtained in the by-product form of PVA/nanocellulose/Ag
as strong nano-filler reinforcement of peels, seeds or skin, pulp, hulls, nanocomposite films for antimicrobial
in bio-nanocomposites. This study etc., agro-processing industries, food packaging. Carbohydrate
provided better insights into their contains a valuable content of polymers, 184, 453-464.
crystalline, thermal and colloidal celluloses. Thereby utilization of
properties of CNCs from cucumber such celluloses for production of 4. Othman, S. H. (2014). Bio-
cellulose₂. CNCs will help the problems of bio- nanocomposite materials for food
wastage disposal and environmental packaging applications: types of
The researchers further made a note pollution to be controlled through biopolymer and nano-sized filler.
for “packaging industry players in some extent and their application Agriculture and Agricultural Science
India for substantial investments for biodegradable packaging will Procedia, 2, 296-303.
to improve packaging material boost the modern packaging
properties for better sustainability, sector towards a sustainable 5. Antczak, T. (2012). Nanotechnology-
disposal and decomposition issues, development and plastic free world. methods of manufacturing cellulose
thereby focussing on sustainable Though cellulose nanomaterials nanofibres. Fibres Text East Eur, 20(2),
packaging and plastic free world”. have the potential to replace 8 -12.
The Active packaging technology non-renewable materials with
in food and beverage industry has more sustainable environmental 6. Prasanna, N. S., & Mitra, J. (2020).
demand for minimally processed friendly resources, but there is Isolation and characterization of
and preservative free foods. In a lack in its commercialization. cellulose nanocrystals from Cucumis
active packaging, nanocrystals The key challenges and barriers sativus peels. Carbohydrate Polymers,
incorporated into polymeric films, are related to its production and 247, 116706.
which can prevent microbial food processing methods, need for proper
contamination. The ability to impart characterization and standards, the
very low oxygen permeability need for better understanding of
made the nanocellulosic materials potential impact on environmental,
highly desirable in food packaging health, and safety issues, the need
business. All these demands for for market-pull and technical * Author is Research Student, Indian
biodegradable packaging will surely readiness, need to be more focused Institute of Technology Kharagpur,
shoot up nanocellulose market in and researched for its industrial Kharagpur, West Bengal, India
coming future. commercialization.

Food Marketing & Technology 32 December 2020