Tunyarut Jinkarn

Bio: Tunyarut Jinkarn is an academic researcher from Kasetsart University. The author has contributed to research in topics: Paperboard & Coating. The author has an hindex of 8, co-authored 18 publications receiving 296 citations.

Antimicrobial effects of vanillin coated solution for coating paperboard intended for packaging bakery products

Abstract: Paperboard is commonly used for distribution and sales packaging of bakery products. Typical bakery products have unique flavour characteristics that could be impaired by volatile antimicrobial compounds contained in the packaging material resulting in unacceptable product quality. This study investigated the antimicrobial effects of vanillin solutions for coating paperboard intended for packaging bakery products. Three coating solutions were evaluated: vanillin/dimethyl sulfoxide (DMSO) (10, 5, 2.5 and 1.25% (w/w)), vanillin/ethyl alcohol (10, 5, 2.5 and 1.25% (w/w)) and vanillin/chitosan (10, 5, 2.5, 1.25, 0.625 and 0.3125 % (w/w)). The inhibitory effects of all coating solutions were investigated against three types of common pathogens and food spoilage bacteria: Escherichia coli, Bacillus cereus and Staphylococcus aureus using the agar well diffusion method. Significant inhibitory effects for all bacteria were observed for all coating solutions. For vanillin/DMSO and vanillin/alcohol, the inhibition was more effective over Escherichia coli, Staphylococcus aureus and Bacillus cereus respectively with a minimum inhibitory concentration (MIC) at 2.5%. Furthermore, the MIC for vanillin/chitosan coating solution was 5% (w/w) for both Escherichia coli and Staphylococcus aureus. However, the MIC of vanillin/chitosan for Bacillus cereus was only 0.625% (w/w). For vanillin/chitosan, MICs for certain bacteria might depend on the inhibitory effectiveness and amount of vanillin and chitosan in the coating solution.

Effects of Biodegradable Coating on Barrier Properties of Paperboard Food Packaging

Abstract: Biodegradable substances with a combination of stearic acid in hydrophobic starch matrix were prepared and coated on paperboard surface. Water resistance by the Cobb test method and grease barrier properties was investigated. According to the results, water and grease resistance properties of coated paperboard were significantly improved. However, the barrier level for both water and grease depended on certain coating solution concentrations.

Effect of Carrying Slots on the Compressive Strength of Corrugated Board Panels

Abstract: This research is aimed at studying effects of the carrying slots on the compressive strength of corrugated board panels. Factors of interest include shape, position and size of the carrying slots. The result reveals that corrugated board with circle shape slotting shows the smallest reduction in compressive strength compared to other slotting shapes. However, perforated style shows better performance in compressive strength than the true cut slot. Furthermore, compressive strength of the board decrease as the slot position is located away from the center of the board. Also, the smaller the slot size, the higher the compressive strength. The results of this study can be applied in structural design of the corrugated boxes for suitable service environment.

Trade-off analysis of packaging attributes for foods and drinks

Abstract: Purpose – The purpose of this paper is to understand consumer perspectives and trade-offs on packaging convenience attributes of various food and drink packages vs increased cost. Design/methodology/approach – The research utilized structured interviews to collect pertinent data. Personal interviews were conducted at major supermarkets within Bangkok and the vicinity. During data collection, 600 interviews were concluded. Target groups were composed of those who are major shoppers of particular food and drink products. In total, three packages for food products and two packages for drink products were selected for the study, including snack pouches, tuna cans, ready-to-eat plastic trays, laminated juice cartons, and plastic bottles for drinking water. Packaging attributes that were taken into consideration were structure, body style, opening mechanism, reseal features, and tamper-evident characteristics. Part worth analysis and importance level of increased price factors compared with packaging attributes...

Effect of Temperature

Abstract: A positive temperature coefficient is the term which has been used to indicate that an increase in solubility occurs as the temperature is raised, whereas a negative coefficient indicates a decrease in solubility with rise in temperature.

Intelligent Food Packaging: A Review of Smart Sensing Technologies for Monitoring Food Quality.

Abstract: Food safety is a major factor affecting public health and the well-being of society. A possible solution to control food-borne illnesses is through real-time monitoring of the food quality throughout the food supply chain. The development of emerging technologies, such as active and intelligent packaging, has been greatly accelerated in recent years, with a focus on informing consumers about food quality. Advances in the fields of sensors and biosensors has enabled the development of new materials, devices, and multifunctional sensing systems to monitor the quality of food. In this Review, we place the focus on an in-depth summary of the recent technological advances that hold the potential for being incorporated into food packaging to ensure food quality, safety, or monitoring of spoilage. These advanced sensing systems usually target monitoring gas production, humidity, temperature, and microorganisms’ growth within packaged food. The implementation of portable and simple-to-use hand-held devices is als...

Renewable fibers and bio-based materials for packaging applications - A review of recent developments

Abstract: This review describes the state-of-the-art of material derived from the forest sector with respect to its potential for use in the packaging industry. Some innovative approaches are highlighted. The aim is to cover recent developments and key challenges for successful introduction of renewable materials in the packaging market. The covered subjects are renewable fibers and bio-based polymers for use in bioplastics or as coatings for paper-based packaging materials. Current market sizes and forecasts are also presented. Competitive mechanical, thermal, and barrier properties along with material availability and ease of processing are identified as fundamental issues for sustainable utilization of renewable materials.