scholarly journals Pork Liver Freshness Evaluated through Spoilage Microbiota and a Consumer Test in Shelf Life Extension Experiment

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Rita O. Silva ◽  
Margarida I. F. C. Rouxinol ◽  
Luís A. S. C. Patarata

Pork liver is an affordable product, very much appreciated by some consumers. Packaged pork liver has a short shelf life that can represent an additional cost to the producers. This work aimed to assess the relationship between consumer acceptability, evaluated through both a test made live with photography and samples to be smelled and an internet survey platform based only on photography, and the counts of the main spoilage microorganisms, on pork liver samples stored from the actual end of shelf life (ESL) and two extra days of storage times, ESL + 2 and ESL + 4. The results indicate limited usefulness of microbial counts, once they were generally very similar between accepted and nonaccepted samples, with total viable count below 7 Log CFU/g. Both methodological approaches revealed that there is no margin to extend the shelf life from the three days previously established by the manufacturer. It was observed that pork liver packaged with modified atmosphere had similar evaluations of freshness using internet-based or live test with consumers, with a drop in purchase intention from 87.5% at ESL to 13.2% at ESL + 2, when the assessment was made through the internet-based test. When the test was made live, the purchase intention had the same trend, but the drop was smaller, from 61.5 at ESL to 21.2% at ESL + 2. The purchasing intention was lower when the consumers had the opportunity to smell the samples but considering the decision of defining the end of shelf life based on 50% of consumers accepting, it was similar in almost all the cases.

2013 ◽  
Vol 781-784 ◽  
pp. 1550-1557 ◽  
Author(s):  
Ye Lu ◽  
Li Li ◽  
Fu Xin Yang ◽  
Heng Guang Zhang

Novel composites consisting of chitosan (Ch), polyvinyl alcohol (PVA), and thyme essential oil (T) were prepared as a new packing materials. The effects of Ch+PVA+T film on quality and shelf life of Channa argus stored under refrigeration were investigated. The control and the treated fish samples were analyzed periodically for chemical (pH, TVB-N), microbiological (total viable count), and sensory characteristics. The results indicate that samples treated remained acceptable up 15 days while the untreated samples up to11 days of storage. The thyme essential oil addition in samples contributes to a slower process of fish spoilage. The preservative effect is greater as the oil concentration is greater.


2019 ◽  
Vol 886 ◽  
pp. 92-97
Author(s):  
Atchara Nuphet Phoem ◽  
Sumitra Sankalee ◽  
Pirada Aryae

The effects of reduced water activity and different packaging materials were investigated regarding shelf life extension of Thai red curry paste and sour curry paste. Curry pastes supplemented with 10% sodium chloride and dried at 50°C for 120 minutes and original red and sour curry pastes were evaluated for physical, chemical and microbiological properties. Results showed that L*, a*, and b* values and total viable count in supplemented curry pastes were less than in original curry pastes. Staphylococcus aureus, Bacillus cereus, Clostridium perfringens, Salmonella spp. and Escherchia coli were not detected in both supplemented and original curry pastes. Protein, fat, fibre, carbohydrate, total phenolic content and IC50 value of supplemented curry pastes did not differ from the original curry pastes. Both supplemented and original curry pastes were vacuum packed in aluminium foil and nylon bags and stored at 25°C for 8 weeks. Results revealed that nylon bags gave higher shelf life extension for supplemented curry pastes over the storage period. Values of water activity, moisture, aflatoxin, total viable count and mould count in supplemented curry pastes packed in nylon bags were less than the Thai community product standards.


2016 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Shabnam Behnama ◽  
Mohammad Anvari ◽  
Masoud Rezaeia ◽  
Siyavash Soltanian

<p style="margin: 0in 0in 10pt; line-height: normal;"><span style="color: black; font-family: 'Times New Roman','serif'; font-size: 12pt; mso-fareast-font-family: Gulim;">The objective of this study was to investigate influence of nisin on </span><span style="color: black; font-family: 'Times New Roman','serif'; font-size: 12pt;">quality and shelf-life of filleted rainbow trout (<em>Oncorhynchus mykiss</em>) during 16 days storage at 4<sup>o</sup>C by biochemical and microbial assessments. The obtained results revealed that nisin treated samples showed lower (P&lt;0.05) biochemical (peroxide value, thiobarbituric acid-index, pH, free fatty acids, and total volatile base nitrogen) and bacteriological (total viable counts and lactic acid bacteria) attributes during whole storage time compared with the untreated fillets, which can be related to bactericidal and antioxidant activity of the nisin. However, total volatile base nitrogen and total viable count values exceeded above the acceptability on day 8 and 12 of storage for the samples treated without and with nisin, respectively. The results of this study according to biochemical and bacteriological data indicated that nisin enhanced the quality and shelf-life of filleted rainbow trout from 4 to 8 days during storage at 4<sup>o</sup>C. </span></p>


2018 ◽  
Vol 8 (3) ◽  
pp. 250
Author(s):  
Saniatun Nurhasah ◽  
Jono M Munandar ◽  
Muhammad Syamsun

<p><em>ABSTRACT</em></p><p><em>Indonesia is one of the largest Moslem population countries in the world. It leads to the increasing of halal product demand in Indonesia. The awareness to consume halal product becomes a large market potential for producers to produce their halal products. Nowadays, halal is not only purely about religion matter, but also about business and trade. The objective of this study is to investigate the factors affecting customers on purchasing halal buying interest on processed food. We use a purposive sampling method with 109 respondents who are customers of the supermarkets and minimarkets in Bogor City/District, Indonesia. While data analysis is done by SEM-PLS method, this study uses brand image, perceived quality, perceived value, halal certification, health reason, halal awareness, and halal marketing as the factors which are affecting the halal purchase intention of the customers. The result showed that health reason, halal awareness, and perceived value have a significant and positive direct effect on purchasing intention. Halal marketing also shows a significant and positive effect on purchasing intention. While halal marketing shows a negative and significant effect on purchasing intention. The food safety, halal certification, brand image, and perceived quality show the same effect which has no direct effect on purchasing intention. Furthermore, food safety has an indirect effect on purchasing intention through health reason. Halal certification has an indirect effect on minat beli through brand image variable. Meanwhile, brand image and perceived quality have an indirect effect through perceived value variable on purchasing intention.</em></p><p><em><br /></em></p><p>ABSTRAK</p><p>Indonesia adalah salah satu negara dengan populasi Muslim terbesar di dunia. Hal ini menyebabkan meningkatnya permintaan produk halal di Indonesia. Kesadaran untuk mengkonsumsi produk halal menjadi potensi pasar yang besar bagi produsen untuk memproduksi produk halal mereka. Saat ini, halal tidak hanya murni soal agama, tapi juga soal bisnis dan perdagangan. Tujuan dari penelitian ini adalah untuk mengetahui faktor-faktor yang mempengaruhi minat pelanggan dalam membeli pada makanan olahan halal. Kami menggunakan metode voluntery sampling dengan 109 responden yang merupakan pelanggan supermarket dan minimarket di Kota/Kabupaten Bogor, Indonesia. Sedangkan analisis data dilakukan dengan metode SEM-PLS. Penelitian ini menggunakan citra merek, persepsi kualitas, persepsi nilai, sertifikasi halal, kesehatan, kesadaran halal, dan Pemasaran halal sebagai faktor yang mempengaruhi niat pembelian halal pelanggan. Hasil penelitian menunjukkan bahwa kesadaran halal, alasan kesehatan, dan persepsi nilai berpengaruh positif dan signifikan terhadap niat beli. Pemasaran halal juga menunjukkan efek positif dan signifikan terhadap niat beli. Sedangkan pemasaran halal menunjukkan efek negatif dan signifikan terhadap niat beli. Keamanan pangan, sertifikasi halal, citra merek, dan kualitas yang dirasakan menunjukkan efek yang sama yang tidak berpengaruh langsung pada niat beli. Selanjutnya, keamanan pangan berpengaruh tidak langsung terhadap niat beli melalui alasan kesehatan. Sertifikasi halal memiliki efek tidak langsung terhadap niat beli melalui variabel citra merek. Sedangkan citra merek dan persepsi kualitasmemiliki pengaruh tidak langsung melalui persepsi nilai variable terhadap niat beli.</p>


2019 ◽  
Vol 279 ◽  
pp. 379-388 ◽  
Author(s):  
Argus Cezar da Rocha Neto ◽  
Randolph Beaudry ◽  
Marcelo Maraschin ◽  
Robson Marcelo Di Piero ◽  
Eva Almenar

Author(s):  
William J. Shelstad ◽  
Ameer A. Hosein ◽  
Joseph R. Keebler ◽  
Barbara S. Chaparro

The current study investigated three user experience scales, the GUESS-24, the ENJOY, and the UEQ-S scale, as well as their relationship to gameplay continuance and purchasing intention for six popular online games. Results indicated that each of the three scales (GUESS-24, ENJOY, UEQ-S) could be used to predict continuance and purchase intention in the games of interest. The ENJOY and GUESS-24 performed better in predicting continuance intention than the UEQ-S. The GUESS-24 performed the best in terms of predicting purchase intention.


RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17630-17641
Author(s):  
Mohamed Tagrida ◽  
Soottawat Benjakul

Betel leaf ethanolic extract dechlorophyllized using sedimentation (BLEE-SED) exhibited enhanced antioxidant and antibacterial activities. BLEE-SED could extend the shelf-life of Nile tilapia fillets during refrigerated storage (4 °C) up to 9 days.


2021 ◽  
Vol 13 (8) ◽  
pp. 4548
Author(s):  
Qingyu Zhang ◽  
Sohail Ahmad

Corporate social responsibility (CSR) in management domains is a well-known concept that links corporate interests and environmental/community values. CSR is considered a strategic policy that offers environmental and social competitive advantages. Organizations consider that CSR-based goodwill provides a tactical competitive edge and sustainable growth. The goal of this paper is to show how CSR programs affect consumers’ purchasing intention in the context of Pakistan. In addition, the effect of customer awareness has been studied as a moderator between CSR and purchasing intention. To this end, the study has conducted a survey and gathered Pakistani customers’ responses, and structural equation modeling has been used to evaluate the results. The study concludes that CSR activities favorably affect customer purchasing intentions directly as well as indirectly through improving brand image and trust, and customer awareness of CSR activities plays a moderating role. The implications and future research directions are discussed.


Sign in / Sign up

Export Citation Format

Share Document