An optimum mixture of virgin rice straw pulp and recycled old newsprint (ONP) pulp and their antimicrobial activity

Recycled fibres are important sources for paperboard industry. There are various approaches to enhance the strength of recycled fibres. These approaches includemechanical treatment, chemical addition, and physical fractionation as well as blending with virgin fibres. In this study, two types of deinked old newsprint (ONP) pulp were subjected to blending with virgin fibres of rice straw. The ONP pulp was blended with rice strawpulp at 4 intervals ranging from0 to 100%addition. Itwas observed that blending ONP with rice strawpulp had enhanced the strength of the virgin fibre and vise versa. The modification of rice straw fibres was visually evaluated by scanning electron microscopy (SEM). It was observed that the addition of the flexible ONP pulp type2 seemed to fill up the voids in the paper sheet and created more bonding with rice straw fibres. Shrimps exoskeletons poweder, borax and cactus peel extract were added to paper board made from50%rice straw+50%ONP type2 pulp at percent of 2%based on oven dryweight pulp. The antimicrobial activity of each of these three additives was studied.

[1]  W. Wood,et al.  Cellulose and hemicellulose , 1988 .

[2]  A. Narbad,et al.  Analysis of the inhibition of food spoilage yeasts by vanillin. , 2003, International journal of food microbiology.

[3]  D. Varadharajan,et al.  Antibacterial activity of commercially important aquaculture candidate shrimp chitin extracts against estuarine and marine pathogens from Parangipettai coast, south east coast of India , 2017 .

[4]  R. Alén,et al.  Soda-AQ pulping of wheat straw , 2001 .

[5]  S. Dong,et al.  Toxicity detection of sodium nitrite, borax and aluminum potassium sulfate using electrochemical method. , 2013, Journal of environmental sciences.

[6]  Xuejun Pan,et al.  Atmospheric Acetic Acid Pulping of Rice Straw II: Behavior of Ash and Silica in Rice Straw during Atmospheric Acetic Acid Pulping and Bleaching , 1999 .

[7]  K. Akrida-Demertzi,et al.  A study on the migration of organic pollutants from recycled paperboard packaging materials to solid food matrices , 2007 .

[8]  A. Juwono,et al.  The Treated Rice Straw as Potentially Feedstock of Wood and Rice Straw Fiber Blend for Pulp and Paper Making Industry , 2014 .

[9]  Y. Pyun,et al.  Antifungal activity of rice straw extract on some phytopathogenic fungi , 2012 .

[10]  F. Moosdeen,et al.  Standardization of inoculum size for disc susceptibility testing: a preliminary report of a spectrophotometric method. , 1988, Journal of Antimicrobial Chemotherapy.

[11]  Salaheldin Dafaalla Mohieldin,et al.  Pretreatment Approaches in Non-wood Plants for Pulp and Paper Production: A Review , 2014 .

[12]  Rushdan Ibrahim,et al.  STRUCTURAL, MECHANICAL AND OPTICAL PROPERTIES OF RECYCLED PAPER BLENDED WITH OIL PALM EMPTY FRUIT BUNCH PULP , 2003 .

[13]  P. Sneath,et al.  Numerical classification of Streptomyces and related genera. , 1983, Journal of general microbiology.

[14]  E. Xu.  Synergistic Effects Between Chemical Mechanical Pulps And Chemical Pulps From Hardwoods , 2007 .

[15]  J. Casey.  Pulp and paper : chemistry and chemical technology , 1960 .

[16]  M. Hocking.  Handbook of chemical technology and pollution control , 1998 .

[17]  Y S Song,et al.  Analytical procedure for quantifying five compounds suspected as possible contaminants in recycled paper/paperboard for food packaging. , 2000, Journal of agricultural and food chemistry.

[18]  U. Shivhare,et al.  Mechanical properties and antimicrobial efficacy of active wrapping paper for primary packaging of fruits , 2013 .

[19]  Y. Bi,et al.  Antifungal effect of borates against Fusarium sulphureum on potato tubers and its possible mechanisms of action , 2012 .