Deskripsi Daging Rana Arfaki (Anura; Ranidae) yang Dikonsumsi Masyarakat Moiley di Pegunungan Arfak

In Papua, especially in the Arfak Mountains, one of wild animals that commonly used as a non-animal protein source is frogs. Although it has been consumed by local people for generations, there is no representative information on the characteristics of Arfak frog meat. This study aims to determine the body weight and weight of carcass of Arfak frogs (Rana arfaki) comsumed by the Moiley communtiies in the Arfak Mountains. In addition, this study also attempts to reveal the physical quality and processing techniques of consumed Arfak forg meat. We used descriptive method with observation techniques in the field. The results show that an average body weight of Arfak frogs consumed in Mbenti is 2.53 ± 0.81gr, with an average of carcass percentage 46.77% and non-carcass percentage 53.23%. The physical quality of the meat is, fresh and looks intact, the color of flesh and muscles is white to yellowish white, has a distinctive aroma, and elastic texture as well as strong muscles. The pH value of fresh meat is an average of 7.03. Various meat processing techniques are practiced including fried, stir-fry, grilled and smoked, and pickling/smoked is more preffered bacuse it is easy and the meat can keep longer as a source of food for household animal protein. Keywords: Arfak; Cosnsumption; Meat; Quality; Rana arfaki Abstrak Di Papua khususnya di Pegunungan Arfak, salah satu jenis satwa yang dimanfaatkan masyarakat sebagai sumber protein hewani non-ternak adalah katak. Meskipun telah dikonsumsi oleh masyarakat lokal secara turun temurun, sampai saat ini belum tersedia informasi yang representatif tentang karakteristik daging katak Arfak. Tujuan dari penelitian ini adalah untuk mengetahui bobot badan dan berat karkas katak Arfak (Rana arfaki) yang dikonsumsi masyarakar Moiley di Pegunungan Arfak. Selain itu juga penelitian ini bertujuan untuk mengetahui kualitas fisik dan teknik pengolahan daging katak Arfak yang dikonsumsi. Metode yang digunakan adalah metode deskriptif dengan teknik observasi atau pengamatan langsung di lapangan. Rataan bobot badan katak Arfak (Rana arfaki) yang dikonsumsi oleh masyarakat di Mbenti yaitu 2,53 ± 0,81gr dengan rataan persentase karkas yaitu 46,77% dan persentase non-karkasnya sebesar 53,23%. Kualitas fisik daging katak Arfak yaitu memiliki karakteristik segar dan tampak utuh, warna daging dan otot putih hingga putih kekuningan, memiliki aroma khas, dengan tekstur elastis serta memiliki otot kuat. Sedangkan nilai pH daging katak Arfak segar yang dikonsumsi oleh masyarakat yaitu rata-rata adalah 7,03. Teknik pengolahan daging yang dilakukan oleh masyarakat beragam antara lain goreng, tumis, bakar dan asap. Cara asar/asap lebih disenangi karena mudah dilakukan dan dapat memperpanjang masa simpan daging sebagai cadangan sumber pangan protein hewani rumah tangga. Kata kunci: Arfak; Daging; Konsumsi; Kualitas; Rana arfaki

Choice Experiment Performed on the Fresh Black Slavonian Pig’s Meat: A Preliminary Study

Until now, no research has been carried out in Croatia into consumer preferences for a particular agricultural and food product by a choice experiment. Therefore, little data are available about Croatian consumers' preferences for social concerns (sustainability, biodiversity, rural development and animal welfare) with regard to the consumer choice and behavior favoring local pig breeds, in this case the Black Slavonian Pig breed. A survey was the method used to collect the data, and a survey questionnaire was used as an instrument. The survey was performed on a sample of n = 100 Croatian consumers surveyed online using a hypothetical choice experiment. The data were analyzed using the three logit models: a multinomial logit model (MNL), random parameter logit (RPL), and an error component random parameter logit model (RPL-EC) in order to examine the consumers’ heterogeneous preferences for fresh ham meat of the Black Slavonian Pig. The results suggest that the Croatian consumers appreciated a darker red fresh pork meat than the one obtained from the Black Slavonian Pig reared outdoors and semi-outdoor. They also prefer a fresh meat bearing a geographical information label, such as the continental Croatia and continental Croatia + PDO, to a fresh meat without a label.

Effect of Different Black Quinoa Fractions (Seed, Flour and Wet-Milling Coproducts) upon Quality of Meat Patties during Freezing Storage

In this study, the quality of meat patty samples containing different black quinoa fractions (seed, flour and wet-milling coproducts) was evaluated during freezing preservation. Composition, physicochemical parameters (aw, pH, colour and texture), cooking properties, lipid oxidation and sensory characteristic were studied in four batches (control and 8% concentration of quinoa seed, flour and wet-milling coproducts added) at 30, 60 and 90 days of freezing (−20 ± 1 °C). Different black quinoa fraction addition affected (p < 0.05) physiochemical properties, improved cooking properties and reduced lipid oxidations during freezing storage. Batches with flour and wet-milling coproducts added were the most stable for texture parameters and lipid oxidation during freezing. The results obtained showed that quinoa wet-milling co-products could be considered a valuable sustainable and organic food ingredient, maintaining nutritional and global qualities of the fresh meat product. In addition, freezing storage is an effective way to prolong the shelf life of patties with different black quinoa fractions, added without affecting quality.

Study on the Effects of Sorbitol on Water Holding Capacity of Meat by NMR

The distribution and changes of constitutional water, immobilized water and free water and the effects of the sorbitol on three kinds of water during the curing of fresh meat were studied in this paper. The low-field Nuclear Magnetic Resonance were used to measure water and its distribution in meat. The test parameters are as follows: magnetic field strength of the NMR spectrometer is 0.5Tesla, corresponding resonance frequency for protons is 22MHz, sampling points is 160128, repeated scanning number is 16, repetition time is 1.6s, echo time is 1.6s. The results showed that: the relaxation time T2 can be divided into three parts: T21 (0∼10ms), T22 (10∼100ms), T23 (100∼1000ms). And the area of T21, T22, T23 represents the contents of constitutional water, immobilized water and free water. The addition of sorbitol can keep water during curing. The sorbitol can reduce the activity of the immobilized water and free water during curing of the fresh meat.

Distribution and Safety Assessment of Heavy Metals in Fresh Meat from Zhejiang, China

There are increasing concerns on heavy metals in animal derived foods. We analyzed the levels of As, Cd, Cr, Cu, Hg, Ni, and Pb in 1066 fresh meat samples including pork, beef, mutton, chicken and duck from Zhejiang province, southeast China. The average levels of As, Cd, Cr, Cu, Hg, Ni, and Pb were 0.018, 0.002, 0.061, 0.801, 0.0038, 0.055, and 0.029 mg/kg wet weight respectively. There are significant positive correlations among Cd, Hg and Pb (P<0.05) and negative correlations for Cu-Pb or Cu-Cd (P<0.05). The exposure assessment showed that the health risk to humans by consuming these meat products was relatively low. However, regular monitoring of heavy metals in meat products is still recommended considering their intensive industrial activities.

Antimicrobial Potential of Plastic Films Incorporated with Sage Extract on Chicken Meat

The function of packaging is crucial in the maintenance of fresh meat product quality. This study aimed to assess the efficiency of six films added with coatings 2379L/220 and 2379L/221 (containing sage extracts) to inhibit Salmonella typhimurium, Staphylococcus aureus, and Escherichia coli, which showed that two of the six films had a significant effect. Additionally, the effects of the films on refrigerated skinless chicken breast meat were evaluated based on microbiological content, colour, weight loss, texture and pH. Four of the six films were examined could extend the storability of refrigerated chicken breast fillets for up to seven days. All six treated films improved the pH, colour stability, weight loss, and texture of the chicken fillets. Therefore, these findings suggested that the coatings containing sage extracts having different viscosities (2379L/220 and 2379L/221) were effective as antimicrobial adhesives in food packaging films and can be commercially applied in prolonging the storage of chicken breast meat without affecting their quality.

Antimicrobial Effects of Basil, Summer Savory and Tarragon Lyophilized Extracts in Cold Storage Sausages

The problem of functional foods with bioactive components of natural origin is current for the food industry. Plant extracts rich in polyphenols with antioxidant and antimicrobial activity are a promising source for use in improving the quality and characteristics of fresh meat and meat products. In this context, the purpose of the present study was to evaluate the physico-chemical, microbiological, sensory properties of sausages prepared with the addition of lyophilized extract of basil, thyme or tarragon. For the beginning, the total amount of polyphenols, the antioxidant and antimicrobial activity of the extracts obtained from three spices were evaluated. In the sausages previously infected with Staphylococcus aureus and Escherichia coli it was observed that there is a much larger number of colonies of microorganisms in the control sample compared to the other samples within 24 and 48 h. Moreover, following the addition of sausage extracts, no changes were found regarding their sensory acceptability.

Antibiotic Resistance in Salmonella Isolated from Ho Chi Minh City (Vietnam) and Difference of Sulfonamide Resistance Gene Existence in Serovars

In this study, a total of 228 raw meat samples (pork: 76, beef: 76, chicken: 76) and 301 raw seafood samples (fish: 199, shrimp: 67, squid: 35) were collected randomly at traditional markets in Ho Chi Minh City (Vietnam). In meat, the ratio of Salmonella spp. was 70.61% (161/228). Among the contaminated meat samples, pork was infected with a ratio of 90.79 % (69/76) while the contamination ratios in beef and chicken were 43.42% (33/76) and 77.63% (59/76), respectively. Salmonella contamination was detected in fish (40.20%), shrimp (7.46%) and squid (17.14%). Because of sulfonamide group is used in Salmonella treatment, the study focused on sulfonamide resistance. In fresh seafood comparison, there were 32.56%, 40% and 10% Salmonella showing resistance to sulfamethoxazol in fish, squid and shrimp, respectively. In fresh meat comparison, there were 31.58%, 16.67% and 55.56% Salmonella showing resistance to sulfamethoxazol in pork, beef and chicken, respectively. Interestingly, there were 21 serovars including 19 identified serovars including S. Kentucky (8), S. Agona (2), S. Infanis (4), S. Saintpaul (1), S. Indiana (1), S. Braenderup (1), S. Potsman (2) and 2 unidentified serovars showing different phenotype to this antibiotic. Among the 21 serovars, only 23.81% strains carried both genes (sul1, sul2). For the sul1 gene, 61.9% strains were presented while sul2 occupied at a lower rate than sul1 with the rate of 52.38%. The study is very interesting and useful to go more functional analysis in sulfonamide resistance.