Piotr Kulawik

University of Agriculture in Krakow | UR · Department of Animal Products Processing

There is a lack of regulations regarding labeling of the place of cultivation of freshwater fish, even though some research indicates that environmental factors can influence the quality of rainbow trout meat. The purpose of this study was to assess the necessity of such regulations and to determine the meat quality of rainbow trout cultivated in d...

Microbiological and chemical safety concerns regarding frozen fillets from Pangasius catfish (Pangasius hypophthalmus) exported to Poland, Germany and Ukraine and Nile tilapia (Oreochromis niloticus) exported to Poland and Germany were investigated by analyzing the heavy metal residues, microbiological hazards, biogenic amines, TBA and TVB-N conten...

Although environmental factors greatly affect the quality of carp meat, no regulations impose labelling the cultivation place of freshwater fish. That is why the purpose of this study was to determine the quality of carp meat cultivated in several regions of Poland as well as assess the necessity of implementing such regulations. The influence of t...

This work determines quality properties and fatty acids content of Nile tilapia (Oreochromis niloticus) stored in ice for 21 d. The quality properties consist of thiobarbituic acid (TBA), total volatile basic nitrogen (TVB‐N), trimethylamine (TMA), and microbiological analysis (total viable count (TVC), total coliform, Salmonella and Staphylococcus...

The demand for high-quality seafood products is constantly growing worldwide. Nevertheless, seafood is susceptible to rapid rancidity mainly due to lipid oxidation and microbiological spoilage. Thus, treatment with antioxidants offers a preservation technique that can prolong the shelf-life of seafood. However, because of food safety and health con...

The study explored the impact of multilayer nano/mini furcellaran/chitosan emulsions containing oregano essential oil and LL37 and RW4 bioactive peptides on the texture, pH, colour, sensory, and retrogradation of salmon sushi. A triple-layer nano/miniemulsion system was applied by electrospraying onto salmon nigiri and hosomaki sushi, stored at 4 °...

Commercial applications of nanotechnology in the food industry are rapidly increasing. Accordingly, there is a simultaneous increase in the amount and diversity of nanowaste, which arise as byproducts in the production, use, disposal, or recycling processes of nanomaterials utilized in the food industry. The potential risks of this nanowaste to hum...

Almost 80 % of the oceans, especially the Arctic and Subarctic are primarily inhabited by marine mammals. Marine species depend mostly on sea ice for food, raising their young ones and safeguarding themselves from predators. Consumption of marine mammals has always been recommended as healthy, but the truth is that it can be detrimental for human h...

BACKGROUND The aim of the work was to develop a technology for using waste from prawn and shrimp processing as a source of active ingredients that could be used in the promotion of healthy foods. From fresh and freeze‐dried prawn and shrimp shells, protein hydrolysates (carotenoproteins) were obtained using two different enzymes, Flavourzyme and Pr...

The aim of the study was to investigate the antioxidant and antimicrobial properties of novel, edible biopolymer coatings consisting of chitosan, furcellaran, carp skin gelatin hydrolysate and 8 different bioactive peptides: Lfcin-β, MBP-1, PLGG, LL37, Cys-LL37, melittin, RW4 and nisin. In vitro analyses consisted of evaluating FRAP and ABTS radica...

A growing interest has been noted if both industry operatives and consumers in cell-based meat (CBM), as visible in the increasing investment into this technology by major food industry corporations. However, in almost all countries worldwide, there is a lack of clear legislation with regard to the labeling of such products. The aim of the article...

The main aim of the study was to monitor the quality of fortified cold-pressed rapeseed oil stored in different conditions. The rapeseed oil was fortified with sesame, chia, and hemp seeds as well as hemp herb, and stored in the dark and light during a 3-month period. The oils were monitored for changes in fatty acid contents, polyphenol, chlorophy...

The effects of sumac, cumin, black pepper and red pepper diethyl ether extracts on the growth of eight foodborne pathogens (FBP) and their biogenic amine (BA) production were investigated in histidine decarboxylase broth. The antimicrobial effect was determined by the minimum inhibitory (MIC) and minimum bactericidal (MBC) concentrations. Sumac ext...

Plant-derived bioactive compounds have been extensively studied and used within food industry for the last few decades. Those compounds have been used to extend the shelf-life and improve physico-chemical and sensory properties on food products. They have also been used as nutraceuticals due to broad range of potential health-promoting properties....

Non-thermal processing methods, such as cold plasma (CP), high pressure processing (HPP) and pulsed electric fields (PeF), have been proposed for natural and fresh-like foods to inactivate microorganisms at nearly-ambient or moderate temperature. Since natural, safe, and healthy foods with longer shelf-life are increasingly demanded, these requests...

The development and scope of using various food preservation methods depends on the level of consumers’ acceptance. Despite their advantages, in the case of negative attitudes, producers may limit their use if it determines the level of sales. The aim of this study was to evaluate the perception of seven different food processing methods and to ide...

The aim of the study was to develop novel antimicrobial coatings which could be used for extending the microbiological quality of perishable food products. Seven different antimicrobial peptides (Lfcinβ, PLGG, MBP-1, LL-37, Cys-LL-37, RW4 and melittin) have been investigated as possible agents for implementation into the previously developed chitos...

Contamination of the food and especially marine environment with nano/micro-plastic particles has raised serious concern in recent years. Environmental pollution and the resulting seafood contamination with microplastic (MP) pose a potential threat to consumers. The absorption rate of the MP by fish is generally considered low, although the bioavai...

The aim of the study was to develop and characterise an innovative three-component biopolymer film based on chitosan (CHIT), furcellaran (FUR) and a gelatin hydrolysate from carp skins (Cyprinus carpio) (HGEL). The structure and morphology were characterised using the Fourier transform infrared spectroscopy (FT-IR) and atomic force microscopy (AFM)...

Background Currently, consumer opinions are often shaped by information in the media such as on television or the Internet. This information, however, is not always compatible with scientific evidence. Despite the increasing awareness of consumers, there are still many concerns about the health and safety of using domestic microwave ovens. Scope...

Seafood and seafood products (SSPs) are highly perishable foods due to their chemical composition (high moisture content and nutrients). They are regarded as highly sensitive to different processing technologies. SSPs are subjected to various processing conditions with intent to extend their shelf life, quality and minimal nutritional degradation....

The aim of research was to develop biopolymer films based on natural polysaccharides. For the first time, biodegradable films were obtained on the basis of a furcellaran-chitosan polyelectrolyte complex. The conditions for its formation were determined by measuring the zeta potential as a function of colloid pH, the size of pure components and thei...

Background There is an increased consumer demand for products derived from natural sources or containing natural compounds used to preserve or improve food quality and/or human health. Carvacrol and thymol, two phenolic, monoterpene isomers, extracted from natural sources such as oregano and thyme, showed antioxidant, antimicrobial, antihypertensiv...

BACKGROUND The effect of nanoemulsions prepared with grape seed and cinnamon essential oils on the shelf‐life of flathead mullet (Mugil cephalus) fillets was evaluated by determining physicochemical (pH, free fatty acids, peroxide value, total volatile base nitrogen (TVB‐N), and thiobarbituric acid reactive substances (TBARs)), sensory and microbio...

Microwave radiation has the ability to heat a material with dielectric properties. Material absorbs microwave energy and then converts it into heat, which gives the possibility of a wide use of microwaves in many industry sectors or agricultural sciences. Microwaves are especially widely used in food industry. The main objective of this paper is to...

The aim of this study was to monitor sensory quality, stability, selected nutritionally interesting properties and their changes in cold-pressed oil blends after fortification with chia and sesame seeds and seed oils during repeated thermal treatments. Rapeseed (cv. Sidney) and sunflower (cv. Velox) seeds from the Czech Republic were used to produc...

More and more attention is being focused on the production of active packaging materials that could be an alternative to synthetic petroleum‐based polymers. After cellulose, chitosan is the second most commonly used biopolymer. This chapter focuses on chitosan as an active packaging material and comprehensively discusses the effects of major factor...

The aim of the work was to develop an easy-to-follow protocol for designing novel functional products with the addition of food industry by-products using design thinking techniques. As a result, a 12-step protocol has been designed and presented. The protocol consists of steps from the initial formation of the design team, through all the stages o...

In this study, two active packaging types were produced: single-layer biopolymer films with a polysaccharide – furcellaran and carp skin gelatin hydrolysate; two-layer films with identical composition, but synthetic peptide Alanina-Tyrosine addition. The procedure objective was multiplying antioxidant effects of the hydrolysate complexed with furce...

The study aimed to enrich waffle products with grape seed flour, but without affecting their sensory properties. The grape seed flour was obtained from grape pomace, and as an ingredient rich in bioactive compounds such as fiber, polyphenols and minerals, it was used to fortify waffles in concentrations of 1, 3, 5 and 10%. The results for the total...

The oceans have been the Earth's most valuable source of food. They have now also become a valuable and versatile source of bioactive compounds. The significance of marine organisms as a natural source of new substances that may contribute to the food sector and the overall health of humans are expanding. This review is an update on the recent stud...

BACKGROUND The meat industry is determined to find biodegradable packaging with properties similar to plastic. Furcellaran (FUR) and whey protein isolate (WPI) were used as a film matrix in which Borago officinalis extract (BOE) was incorporated as an antioxidant compound. The film's mechanical properties, water behavior, surface color, and antioxi...

Sushi meal has been adapting to different countries and traditions ever since it was invented. Recently there is a growing popularity of ready-to-eat sushi meals, with new sushi production plants emerging in many countries. This relatively new sushi industry is facing many challenges, one of which is the microbiological hazard related to sushi cons...

In the study, improvement in antibacterial properties of grapefruit peel essential oil after the nanoemulsification process was investigated. The essential oil composition was characterized using GC-MS, with d-Limonene being the main identified compound (82.86%). The antibacterial properties against common food-borne pathogens (Staphylococcus aureu...

The study investigated how the perception of in‐shop COVID‐19 contraction influences emotions in decision‐making and how they further effect actions undertaken by consumers to control the situation within a store. Structural equation modeling was used to study the relationship between the risk of in‐store infection, emotions and in‐shop behavior, b...

This is the first time that active double-layered furcellaran/gelatin hydrolysate films containing Ala-Tyr peptide were developed and characterised for their properties. Afterwards, films were used on Atlantic mackerel stored at -18°C for 4 months and samples were analysed for changes in their microbiological quality, TVB-N, biogenic amine content,...

Epidemics of infectious diseases have accompanied humans for a long time and, depending on the scale, cause various undesirable social and economic consequences. During the ongoing COVID-19 pandemic, governments of many countries impose restrictions to inhibit spreading of infection. Isolation and limiting interpersonal contacts are particularly re...

The chemical composition and culinary meat tenderness belong to the most important characteristics determining meat quality and value. The aim of this work was to compare texture profiles and shear force of pork loin ( m. longissimus dorsi ) and of pork ham ( m. semimembranosus ) from fatteners of Polish Landrace (PL), Polish Large White (PLW), Dur...

The aim of the study was to identify the importance of individual food product attributes (the use of preservatives, processing method, shelf-life period and nutritional value) as well as their relation to the purchase behaviour. To achieve this, consumer preferences were decomposed in conditions of full access to information, and data was compared...

The domestic (homeland, native) populations - breeds of pigs are grown in certain region and/or country as local, primitive breeds. In Poland following 3 pig breeds are considered as native: Pulawska, Zlotnicka White and Zlotnicka Spotted. The aim of this study was the assessment of the quality of meat and traditionally smoked tenderloins obtained...

Nanocomposite films that were based on furcellaran (FUR) and nanofillers (carbon quantum dots (CQDs), maghemite nanoparticles (MAN), and graphene oxide (GO)) were obtained by the casting method. The microstructure, as well as the structural, physical, mechanical, antimicrobial, and antioxidant properties of the films was investigated. The incorpora...

The paper evaluates and describes the possibility of using common carp (Cyprinus carpio) as an ingredient for sushi production. The carp fillets were subjected to various treatments resulting in creation of three types of marinated carp fillets, two types of carp tartare and one type of baked carp which were used as ingredients for six different ma...

The aim of this work was to simulate selected ways of handling with raw fish after its purchase. The experiment was designed as three partial simulations: a) trend in the biogenic amines formation in raw fish caused by breakage of cold chain during the transport after purchase, b) the use of a handheld gastronomic unit as an alternative method of s...

Chitosan, a deacetylated derivative of chitin, has many functional properties that can be used for processing, preservation and as food additive. Chitosan application can be done by edible coatings, direct addition to the batter, and tumbling in the chitosan solution. Chitosan exhibits antioxidant and antimicrobial properties. Here we review applic...

Citation: Tkaczewska J., Wielgosz M., Kulawik P., Zając M. (2019): The effect of drying temperature on the properties of gelatin from carps (Cyprinus carpio) skin. Czech J. Food Sci., 37: 246-251. Abstract: Th e influence of drying temperature on the characteristics and gel properties of gelatine from Cypri-nus carpio L. skin was studied. Gelatine...

The newly developed intelligent pH-indicator furcellaran (FUR) films made with beet root (BTR), elderberry (EB), blueberry (BB), green tea (GT) and yerba mate (YM) extracts were studied to establish if they can serve as pH-change indicators and to establish how their color changes correlate with the changes of the microbiological (total aerobic bac...

Recently, a greater attention has been directed to a more effective exploitation of chitin, the second most available polysaccharide in crustacean’s products. The shellfish processing industry produces unusable waste, thus posing a practical challenge. Approximately 75% of the total weight of crustaceans ends up as waste and there are actually no a...

This study investigated the effect of application of previously designed furcellaran-gelatin edible coatings with 20% green (GT) and pu-erh (RT) tea extracts on the changes in the cold stored salmon nigiri. Nigiri samples were divided into four groups (control, film control, GT and RT) and analyzed for their microbiological quality (total aerobic b...

Waste from non-degradable plastics is becoming an increasingly serious problem. Therefore, more and more research focuses on the development of materials with biodegradable properties. Bio-polymers are excellent raw materials for the production of such materials. Bio-based biopolymer films reinforced with nanostructures have become an interesting a...

The study investigated the active and intelligent properties of films based on furcellaran (FUR), gelatin hydrolysate (GELH) and rosemary extract (from fresh leaves (FRE) and dry leaves (DRE)). Rosemary extracts were blended with FUR/GELH film forming solution at different three concentrations (5, 10, 20%). Analyzing the ζ-potential dependences of...

Hemp products available on the market may be used in meat processing as valuable sources of nutrients such as n3 fatty acids, proteins and minerals. They could be used to create functional meat products. The aim of this work was to compare the quality of pork loaves produced with the addition of hemp seeds (5%), de-hulled hemp seeds (5%), hemp flou...

Gelatine hydrolysates are of increasing interest as potential ingredients used for various health-promoting functional foods. Cyprinus carpio skin gelatine hydrolysates can be a potential source of bioactive peptides with antioxidant properties. Therefore, the aim of this research was to evaluate the potential use of carp skin gelatine hydrolysate...

Biodegradable films from furcellaran and gelatin (FUR/GEL) with pu-erh (RTE) and green tea (GTE) water extracts (TEs)were obtained by a casting method. The films were examined in terms of physical properties (thickness, density, water solubility, water content, degree of swelling, color), antioxidant properties (DPPH, ABTS, TPC), antimicrobial prop...

Non-thermal plasma (NTP) is one of the most promising minimal processing methods for the food industry. However up until recently there are limited studies which would report the application and effect of NTP on processed seafood. The objective of this review is to highlight the recent findings and advancements in the application of NTP within the...

Background: The study determined the heavy metal contamination (mercury, cadmium, lead, arsenic and nickel) of nori, restaurant-served sushi and ready-to-eat sushi meals available through retail chains. Moreover the microbiological loads and biogenic amines content in ready-to-eat sushi meals were analysed. Results: All the nori samples containe...

Biogenic amine formation and bacterial growth of vacuum-packed European anchovy treated with 1% lemon balm (LB) or lavender (LD) ethanol extracts was investigated. The treated samples were stored at 2 ? 1 ?C for 11 d and analyzed for biogenic amines, total viable count, fecal coliform count, and lactic acid bacterial count. The analyses were done o...

Background: Functional meat products are still rare on the market, since it is difficult to incorporate new ingredients and gain both healthy and acceptable product. Flaxseed is known for its beneficial properties and it was used as an ingredient in the production of homogenized and liver sausages in this study (0, 5 and 10% flaxseed addition). R...

Background: The research studied the possibility of using hyaluronic acid (HA) as a food additive for meat emulsions to create a novel functional food with improved rheological and water binding properties. The sausages with 200 and 500g kg(-1) water addition were supplemented with 0, 0.01, 0.05 and 0.1g kg(-1) of HA and stored for 14 days in vacu...