Quality index method (QIM) and quantitative descriptive analysis (QDA) of Nile tilapia (Oreochromis niloticus) quality indices

Abstract To estimate the shelf life of fresh fish, the processor must know the period of time between catch/harvest and arrival at the processing plant. This information is not always available, necessitating the provision of methods to estimate the time since catch or harvest. The objectives of this study were therefore to develop and/or validate sensory and ATP derivative-based methods for rapidly assessing the freshness of fish. A quality index method (QIM; raw fish) and a quantitative descriptive analysis (QDA; cooked fish) were developed and validated (against bacterial count [total viable count (TVC)] and time) for salmon (Salmo salar) and cod (Gadus morhua). The production of inosine monophosphate (IMP), inosine and hypoxanthine (Hx) and associated ratios (IMP/Hx, K1-value or H-value) were also investigated for use as freshness markers. There was a linear relationship between QIM and TVC (R2 = 0.93 for salmon and R2 = 0.89 for cod), QIM and time (R2 = 0.96 for salmon and R2 = 0.98 for cod), QDA and TVC (R2 = 0.93 for salmon and R2 = 0.77 for cod) and QDA and time (R2 = 0.94 for salmon and R2 = 0.87 for cod), suggesting that the QIM and QDA schemes developed could be used to monitor/assess freshness. The H-value also increased linearly with TVC (R2 = 0.88 for salmon and R2 = 0.89 for cod) and time (R2 = 0.93 for salmon and R2 = 0.84 for cod). It was therefore concluded that both the QIM/QDA approach and monitoring ATP degradation, specifically expressed as the H-value, could be used as rapid methods to assess the freshness of salmon and cod arriving at the processing plant.

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Chemical and sensory characterization of corn oil flavoured by citrus

BRAZILIAN JOURNAL OF FOOD TECHNOLOGY ◽

10.1590/1981-6723.05419 ◽

2020 ◽

Vol 23 ◽

Author(s):

Petra Beatriz Navas Hernández ◽

Armando Carrasquero Durán

Keyword(s):

Corn Oil ◽

Descriptive Analysis ◽

Oil Quality ◽

Quality Parameters ◽

Citrus Fruits ◽

Quality Indices ◽

Quantitative Descriptive Analysis ◽

Refined Oil ◽

Quantitative Descriptive

Abstract A commercial and refined corn oil was added with fresh lemon and orange fruits to produce corn oil flavoured (COF), which were characterized for their quality parameters, fatty acid profile and concentrations of minor components. The sensory analysis was performed by a panel using the quantitative descriptive analysis and the hedonic score. Results showed that the addition of citrus fruits did not affect the oil quality indices, accomplishing the requirements for commercialization. The biophenols and pigments, initially absent in the refined oil, were detected in COF. The addition of orange or lemon fruits to the corn oil had no effects on oil stability, while the volatile profile in the headspace of flavoured oils showed the presence of several terpenes that were originally absent, among them: limonene; γ-terpinene; α-pinene and β-pinene. The sensory results confirmed that positive attributes and the acceptability of the unflavored corn oil can be improved by increasing amounts of both fruits.

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Changes in Sensory and Microbiological Quality Indices of Nile Tilapia (Oreochromis niloticus) and Grey Mullet (Mugil cephalus) During Ice Storage

Alexandria Science Exchange Journal An International Quarterly Journal of Science Agricultural Environments ◽

10.21608/asejaiqjsae.2017.3723 ◽

2017 ◽

Vol 38 (July-September) ◽

pp. 433-445

Keyword(s):

Oreochromis Niloticus ◽

Nile Tilapia ◽

Microbiological Quality ◽

Mugil Cephalus ◽

Ice Storage ◽

Grey Mullet ◽

Quality Indices ◽

Nile Tilapia Oreochromis Niloticus

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A Quantitative Descriptive Analysis of Students Motivation, Emotions, and Self-Regulation Processes Using Dynamical Systems Framework

PsycEXTRA Dataset ◽

10.1037/e629492011-042 ◽

2011 ◽

Author(s):

Jeannine Turner ◽

Ralph Waugh

Keyword(s):

Dynamical Systems ◽

Descriptive Analysis ◽

Self Regulation ◽

Quantitative Descriptive Analysis ◽

Quantitative Descriptive ◽

Systems Framework

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Characterization of Francisella noatunensis subsp. orientalis isolated from Nile tilapia Oreochromis niloticus farmed in Lake Yojoa, Honduras

Diseases of Aquatic Organisms ◽

10.3354/dao03333 ◽

2019 ◽

Vol 133 (2) ◽

pp. 141-145 ◽

Cited By ~ 2

Author(s):

E Soto ◽

K Shahin ◽

JJ Talhami ◽

MJ Griffin ◽

A Adams ◽

...

Keyword(s):

Oreochromis Niloticus ◽

Nile Tilapia ◽

Nile Tilapia Oreochromis Niloticus

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Strategi Pengembangan Kelompok Wanita Tani pada Optimalisasi Lahan Pekarangan di Desa Wonogiri

EFFICIENT Indonesian Journal of Development Economics ◽

10.15294/efficient.v1i1.27217 ◽

2018 ◽

Vol 1 (1) ◽

pp. 34-43

Author(s):

Nindy Danisa Wulandari

Keyword(s):

Government Regulation ◽

Descriptive Analysis ◽

Development Strategies ◽

Women Farmers ◽

Quantitative Descriptive Analysis ◽

Self Reliance ◽

The Government ◽

Quantitative Descriptive ◽

The One ◽

Purposive Sample

Development of food security implemented to meet the human basic needs that provide benefits fairly and equitably based on self – reliance, and not contrary to public faith. Referring to the government regulation No 22 of 2009 concerning Food Consumption Diversification Acceleration (P2KP). However, it is not supported by the development of women farmers. The method use in this research is quantitative descriptive analysis using SWOT (Strength, Weakness, Opportunity and Treath). The samples in this study is the purposive sample. Result of a study showed the amount of income earned from the group of women farmers in the one month is 150,000/ members. Proper development strategies used in the development strategies used in the development KWT Melati is a Growth Oriented Strategy is very profitable strategy to seize opportunities with the strength. Pembangunan ketahan pangan dilaksanakan untuk memenuhi kebutuhan dasar manusia yang memberikan manfaat secara adil dan merata berdasarkan kemandirian, dan tidak bertentangan dengan keyakinan masyarakat. Mengacu pada Peraturan Pemerintah No 22 Tahun 2009 mengenai Percepatan Penganekaragaman Konsumsi Pangan (P2KP). Namun, hal ini tidak didukung dengan adanya pengembangan kelompok wanita tani. Metode yang digunakan dalam penelitian ini adalah deskriptif kuantitatif dengan menggunakan analisis SWOT (Strength, Weakness, Opportunity and Treath). Penentuan sampel dalam penelitian ini adalah dengan sampel purposive. Hasil penelitian menunjukan besaran pendapatan yang diperoleh dari adanya kelompok wanita tani dalam satu bulan adalah Rp.150.000/bulan/anggota. Strategi pengembangan yang tepat digunakan dalam pengembangan Kelompok Wanita Tani (KWT) Melati adalah Growth Oriented Strategy.

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PENGARUH KINERJA PENGELOLAAN KEUANGAN DAERAH TERHADAP PERTUMBUHAN EKONOMI, PENGANGGURAN DAN KEMISKINAN DI KOTA DEPOK

Cakrawala Management Business Journal ◽

10.30862/cm-bj.v2i2.45 ◽

2019 ◽

Vol 2 (2) ◽

pp. 372

Author(s):

Suryanta Suryanta

Keyword(s):

Economic Growth ◽

Statistical Analysis ◽

Financial Management ◽

Regression Coefficient ◽

Descriptive Analysis ◽

Analysis Method ◽

Simple Linear Regression ◽

Quantitative Descriptive Analysis ◽

Income Gap ◽

Quantitative Descriptive

This study aims to analyze whether the performance of regional financial management influences economic growth in Depok City, analyzes whether the performance of regional financial management influences unemployment in Depok City, and analyzes whether the performance of regional financial management affects poverty in Depok City with the 2006 study period- 2015 The analysis method used is quantitative descriptive analysis and simple linear regression statistical analysis. Based on the results of hypothesis testing it can be proven that the performance of regional financial management (independence ratio) has a positive and significant effect on economic growth, this can be seen from the value of sig. 0.046 <0.05 with a regression coefficient of 1.883. Then the performance of regional financial management has a negative and significant effect on unemployment, this can be seen from the value of sig. 0.030 <0.05 with a regression coefficient of -6.864. But the performance of regional financial management has no significant effect on poverty, this can be seen from the sig. 0.065> 0.05 with a regression coefficient of -0.512. This can be due to the still high income gap in the community, so that the increasing regional income has not been able to significantly reduce poverty in Depok.

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The effect of vaccination in controling bacterial disease caused by Aeromonas hydrophila in nile tilapia (Oreochromis niloticus)

AQUATIC SCIENCE & MANAGEMENT ◽

10.35800/jasm.0.0.2014.7302 ◽

2014 ◽

pp. 27

Author(s):

Arne A Ratulangi ◽

Reiny Tumbol ◽

Hengky Manoppo ◽

Henneke Pangkey

Keyword(s):

Survival Rate ◽

Aeromonas Hydrophila ◽

Oreochromis Niloticus ◽

Nile Tilapia ◽

Bacterial Disease ◽

Immersion Method ◽

Nile Tilapia Oreochromis Niloticus ◽

Different Ages ◽

Motile Aeromonas Septicaemia

This study aims to apply vaccination against bacterial disease. The purpose of vaccination is to trigger the immune respone both non-specific and specific of fish against bacteria Motile Aeromonas Septicaemia (MAS) caused by Aeromonas hydrophila. The vaccination for fish with different ages: 2-3 weeks and 5 weeks were done using immersion method. The fish were re-vaccinated (booster) after two weeks of the first vaccination. The survival rate was < 50 % for juveniles 2-3 weeks and > 50% for juveniles 5 weeks. Survival rate for juveniles 5 weeks was higher than juveniles of 2-3 weeks. This shows that organs of juveniles of 5 weeks were more complete than the 2-3 weeks juveniles. The age of fish is one of the important factors for successfully vaccination. Penelitian ini bertujuan untuk melakukan penerapan vaksinasi terhadap penyakit bakterial. Vaksinasi ditujukan untuk merangsang respon kekebalan non- spesifik dan spesifik pada tubuh ikan terhadap penyakit Motile Aeromonas Septicaemia (MAS) yang disebabkan oleh bakteri Aeromonas hydrophila. Vaksin diberikan pada benih ikan nila yang berbeda umur yaitu 2-3 minggu dan 5 minggu dengan menggunakan metode perendaman. Ikan divaksinasi ulang (booster) setelah 2 (dua) minggu dari vaksinasi yang pertama. Prosentase kelangsungan hidup < 50 % untuk benih umur 2-3 minggu dan > 50% untuk benih umur 5 minggu. Jumlah kematian benih umur 2-3 minggu lebih tinggi dari 5 minggu. Hal ini menunjukkan bahwa fungsi organ benih umur 5 minggu telah lebih lengkap dari pada benih umur 2-3 minggu. Umur ikan merupakan salah satu faktor penting penentu keberhasilan suatu kegiatan vaksinasi.

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