scholarly journals Experimental accelerated shelf life determination of a ready-to-eat processed food

2019 ◽  
Vol 7 (4) ◽  
Author(s):  
M. Naceur Haouet ◽  
Mauro Tommasino ◽  
Maria Lucia Mercuri ◽  
Ferdinando Benedetti ◽  
Sara Di Bella ◽  
...  
Keyword(s):  
Activation Energy ◽  
Shelf Life ◽  
Food Products ◽  
Food Preparation ◽  
Processed Food ◽  
Life Test ◽  
Life Saving ◽  
Life Tests

The most direct way to estimate the shelf life of a product is to conduct simulation tests which are time consuming and expensive. Conversely, accelerated shelf life tests can be successfully used for stable products having long expected shelf life. The aim of the study was directed to verify the possibility to apply an accelerated shelf life test to perishable food products having a short-expected shelf life, such as a new ready-to-eat processed food preparation, composed mainly by cereals, tuna and chicken, packed in thermo-sealed trays and pasteurised. Different samples of the product were stored in thermal abuse conditions, collected periodically and subjected to determinations of TVB-N, pH and sensorial characteristics. Q10 and activation energy were calculated allowing to obtain a predictive evaluation of the product shelf life at the 4°C recommended temperature. The product shelf life was assessed at 26 days vs the 30 days expected by the manufacturer, showing the possibility to apply successfully ASLT for products having short shelf life, saving both time and money.

Methodology for the accelerated determination of the shelf life of wheat and rye grain

2021 ◽  
pp. 768-774
Author(s):  
K.B. Gurieva ◽  
S.L. Beletskiy ◽  
N.A. Khaba
Keyword(s):  
Shelf Life ◽  
Storage Temperature ◽  
Food Products ◽  
Acid Number

An overview of methods for determining the shelf life of food products is given. An accelerated method, which includes storing grain at a temperature of 20–40 °C, regularly determining the acid number of fats, while using samples from at least three batches of grain of the same crop, has been developed. Based on the obtained results, the estimated shelf life at any storage temperature is determined by calculation using the “Reserve-forecast” program, taking into account that the maximum permissible value of the acid number of fats is: 25 mg KOH/g of fat — for wheat, 23 mg KOH/g fat — for rye. The proposed methodology makes it possible to shorten the duration and reduce the complexity of determining the grain shelf life.

Pengembangan pangan lokal untuk mendukung peningkatan ketahanan pangan dan pariwisata Wakatobi: Pelatihan pembuatan “Kasoami Instan”

DEDIKASI ◽  
2019 ◽  
Vol 21 (2) ◽  
Author(s):  
Abdul Madiki ◽  
Tamrin Tamrin ◽  
La Ode Nafiu ◽  
La Ode Alifariki ◽  
Musram Abadi
Keyword(s):  
Food Security ◽  
Adult Education ◽  
Shelf Life ◽  
Aluminum Foil ◽  
Food Products ◽  
Processed Food ◽  
Direct Practice ◽  
Knowledge And Skills ◽  
Vacuum Method ◽  
Processed Products

Training on Making "Instant Kasoami". The problems formulated were (1) the community of cassava producers in Wakatobi did not yet have the knowledge and skills to make instant cassettes which were required, which were attractive, long-lasting, and preserving product nutrition. The purpose of this training is to develop local processed food products in the framework of supporting food security and tourism in Wakatobi. The objectives of the training are to: (1) Improve the knowledge and skills of the community of kasoami makers in making attractive instant kasoami, long shelf life, and maintaining product nutrition; (2) Making local cassava food processed products as a support for food security and tourism in Wakatobi. Training participants are women who daily make and / or sell kasoami. Total participants were 20 people, consisting of 10 people from Wangi-Wangi District and 10 people from South Wangi-Wangi District. The training is carried out with adult education methods that focus on direct practice of the activity material. Some characteristics of instant Soami training results are as follows: in the processing process, steamed in a pressure cooker; the size of instant soami is smaller than that of citizens of soami; Soami instant packed aluminum foil; Instant Soami can be stored for up to 10 days without changes in structure, texture, and taste. Using the vacuum method, instant soami can be produced which can be stored for more than a month.

scholarly journals Shelf Life of Nori from Gracilaria sp. with Polypropylene (PP) Packaging Based on the Accelerated Shelf Life Test Method

2020 ◽  
pp. 50-60
Author(s):  
Sapinatun Namira ◽  
Evi Liviawaty ◽  
Isni Nurruhwati ◽  
Eddy Afrianto
Keyword(s):  
Shelf Life ◽  
Storage Temperature ◽  
Test Method ◽  
Critical Parameters ◽  
Life Test ◽  
Arrhenius Model ◽  
Texture Parameters ◽  
Calculation Results ◽  
Clear Plastic

This research was conducted at the Laboratory of Fisheries Products Processing, Faculty of Fisheries and Marine Sciences, Padjadjaran University, Jatinangor, West Java, Indonesia. The purpose of this research was to determine the shelf life of Nori from Gracilaria sp. with the Accelerated Shelf Life Test (ASLT) method Arrhenius Model using Polypropylene (PP) packaging. Gracilaria is a genus of red algae (Rhodophyta) used as a food for humans and various species of shellfish. Polypropylene (PP) is a shiny, clear plastic with good optical properties and tensile resistance. The determination of the shelf life of the ASLT method is carried out using parameters of environmental conditions that can accelerate the process of product quality degradation, namely by storing the product at several temperatures above normal storage temperature. The observations used in determining the shelf life of Gracilaria sp. using a sensory test and a water content test with storage for 35 days, at a temperature of 25°C and 35°C. The calculation results of the Arrhenius model used texture parameters as critical parameters because those had the lowest Activation Energy (Ea) in determining the shelf life of Gracilaria sp. which is packaged using PP plastic. The results showed the value used for determining the shelf life of nori Gracilaria sp. namely texture parameters based on the order 0 reaction with the Arrhenius plot Ln K = -2.0381 - 214.63 (1 / T) and Ea of 1784.6485. The shelf life of nori Gracilaria sp. was found to be elongated if stored at room temperature of (25°C) which was around 94 days.

scholarly journals SHELF LIFE OF NORI FROM Gracilaria sp. WITH ALUMUNIUM FOIL PACKAGING BASED ON THE ACCELERATED SHELF LIFE TEST METHOD

2021 ◽  
Vol 2 (1) ◽  
pp. 1-10
Author(s):  
Evi Liviawaty ◽  
Sapinatun Namira ◽  
Subiyanto Subiyanto ◽  
Eddy Afrianto
Keyword(s):  
Shelf Life ◽  
Critical Parameter ◽  
Storage Temperature ◽  
Arrhenius Plot ◽  
Aluminum Foil ◽  
Test Method ◽  
Life Test ◽  
Arrhenius Model ◽  
Quality Degradation

This research was conducted at the Laboratory of Fisheries Products Processing, Faculty of Fisheries and Marine Sciences, Padjadjaran University, Jatinangor. The purpose of this research is to determine the shelf life of Nori from Gracilaria sp. with the Accelerated Shelf Life Test (ASLT) method Arrhenius Model using Aluminum Foil packaging. Aluminum foil packaging is a package composed of hermetic, flexible, and opaque metal so that it has high protection properties against water vapor, light, grease and gas. The determination of the shelf life of the ASLT method is carried out using parameters of environmental conditions that can accelerate the process of product quality degradation, namely by storing the product at several temperatures above normal storage temperature. The observations used in determining the shelf life of Gracilaria sp. using a sensory test and a water content test with storage for 35 days, at a temperature of 25oC and 35oC. The result of the Arrhenius model calculation, the appearance parameter is selected as the critical parameter because it has the lowest Activation Energy (Ea) in determining the shelf life of Gracilaria sp. which is packaged using PE plastic. The results show that the parameters used to determine the shelf life of the product are the taste parameters based on the order 1 reaction with the Arrhenius Plot Ln K = 0.026 – 1318.4 (1 / T) and Ea of 2619.66 Kj/mol. The shelf life of Nori Gracilaria sp. if stored at 25oC temperature is 89 hari 7 jam.

Innovative Temperature Accelerated Life Test for the determination of the activation energy of space solar cells

2019 ◽  
Author(s):  
Neftali Nunez ◽  
Manuel Vazquez ◽  
Laura Barrutia ◽  
Jesus Bautista ◽  
Ivan Lombardero ◽  
...  
Keyword(s):  
Activation Energy ◽  
Solar Cells ◽  
Accelerated Life Test ◽  
Life Test ◽  
Accelerated Life

scholarly journals PENDUGAAN UMUR SIMPAN EKSTRAK KERING BEKU BIJI MELINJO KERIKIL (GNETUM GNEMON L. “KERIKIL”) BERDASARKAN KADAR SENYAWA RESVERATROL DAN AKTIVITAS ANTIOKSIDAN

2019 ◽  
Vol 16 (2) ◽  
pp. 73
Author(s):  
Bambang Kunarto ◽  
NFN Sutardi ◽  
NFN Supriyanto ◽  
Chairil Anwar
Keyword(s):  
Activation Energy ◽  
Antioxidant Activity ◽  
Shelf Life ◽  
Quality Parameter ◽  
Damage Estimation ◽  
Life Test ◽  
Freeze Dried ◽  
Speed Up ◽  
Gnetum Gnemon ◽  
Dried Extract

<p>Biji melinjo kerikil mengandung resveratrol yang merupakan senyawa turunan stilbenoid dan mempunyai aktivitas antioksidan. Selama penyimpanan, senyawa resveratol dapat mengalami perubahan berupa oksidasi dan degradasi yang berdampak pada aktivitas antioksidannya. Penelitian ini bertujuan menduga umur simpan ekstrak kering beku biji melinjo kerikil berdasarkan kadar resveratrol dan aktivitas antioksidan (penghambatan radikal DPPH) sebagai indikator kerusakan. Pendugaan umur simapn dilakukan dengan metoda accelerated shelf life test (ASLT). Metoda ini didasarkan pada penyimpanan pada kondisi yang direkayasa sehingga mempercepat yang terjadinya kerusakan. Penyimpanan dilakukan selama 35 hari pada suhu simpan 35°C, 45°C adn 55°C. Hasil penelitian ini menunjukkan bahwa parameter mutu kritis pada penyimpanan ekstrak kering beku melinjo kerikil adalah aktivitas antioksidan (penghambatan radikal DPPH) karena memiliki energi aktivasi (1301,09 kal/mol) yang lebih rendah dibandingkan energi aktivasi kadar senyawa recveratrol. Umur simpan ekstrak keirng beku biji melinjo kerikil pada penyimpanan 35; 45; 55 dan 28°C berturut-turut adalah 13,57 hari, 12,67 hari, 11,83 hari dan 14,56 hari.</p><p> </p><p><strong>Shelf life estimation of melinjo kerikil seeds freeze-dried extract based on resveratrol and</strong><strong> </strong><strong>antioxidant activity</strong></p><p>Melinjo kerikil seeds contain resveratrol which is a stilbenoid derivative compound and has antioxidant activity. During storage, resveratrol can be dagraded which have an impact on their antioxidant activity. The aim of this study wa to estimate teh shelf life of melinjo kerikil seed freeze-dried extract based on resveratrol content and inhibition of DPPH radicals as an indicator of damage. Estimation of shelf life is carried out by the accelerated shelf life test (ASLT). This method is based on storage in conditions that are engineered so as to speed up the occurrence of damage. Storage is carried out for 35 days at the temperature of 35°C, 45°C, and 55°C. The results showed that the critical quality parameter in the storage of melinjo kerikil seed freeze-dried extracs was inhibition of DPPH radicals. This is because the activation energy of inhibition of DPPH radicals is lower than the revertrol activation energy. The Shelf life of melinjo kerikil seed freeze-dried extract at storage 35; 45; 55 and 28°C respectively were 13.57 days, 12.67 days, 11.83 days and 14.56 days.</p><p> </p>

scholarly journals Determination of Antioxidant Capacity of Unprocessed and Processed Food Products by Spectrophotometric Methods

2011 ◽  
Vol 5 (4) ◽  
pp. 807-813 ◽  
Author(s):  
Aleksandra Szydłowska-Czerniak ◽  
Agnieszka Tułodziecka ◽  
Edward Szłyk
Keyword(s):  
Antioxidant Capacity ◽  
Food Products ◽  
Processed Food ◽  
Spectrophotometric Methods

Determination of product shelf life and activation energy for five drugs of abuse

1991 ◽  
Vol 37 (3) ◽  
pp. 398-402 ◽  
Author(s):  
Geoffrey Anderson ◽  
Milda Scott
Keyword(s):  
Activation Energy ◽  
Carboxylic Acid ◽  
Experimental Design ◽  
Shelf Life ◽  
Drugs Of Abuse ◽  
Stability Assessment ◽  
Critical Step ◽  
Assessment Techniques

Abstract Estimating the shelf life of reagents and controls is a critical step in evaluating new formulations. We describe several stability assessment techniques, giving particular attention to experimental design. Activation energy was experimentally determined for five major drugs of abuse and metabolites: morphine, 11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid, amphetamine, phencyclidine, and benzoylecgonine. The use of activation energy in establishing shelf life is illustrated for SENTRY (Hycor Biomedical Inc.) Drugs of Abuse Screen Control, a liquid urine-based product.

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