Physicochemical and sensory properties of popcorn grain stored at different temperatures

Popcorn is produced and consumed worldwide, requiring storage to address the demands of consumers throughout the year because production is generally seasonal. Several factors can affect the quality of stored grains, including storage temperature. This study aims to evaluate the effects of different storage temperatures (5, 15, 25 and 35 °C) on the physicochemical, technological, pasting and sensory properties of popcorn grains stored for 6 months. The storage at 35 °C for 6 months promoted an increase in the expansion time and a decrease in the weight of the expanded popcorn as well as a decrease in electrical conductivity, pH and protein solubility of popcorn. Moreover, the greater residue content after the expansion was found for grains stored at 35 °C. These characteristics were reflected in the purchase intent test and in the sensory evaluation. Expanded popcorn prepared with grains stored at 15 °C exhibited larger flower and higher purchase intent characteristics than expanded popcorn prepared from other treatments when evaluated by the sensory panel. Considering these benefits, storage at lower temperatures of approximately 15 °C is preferable to preserve the physical, sensory and technological properties of popcorn.

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Shelf Life Studies of Three Wasabi Flavoured Sauces

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v44i2.3665 ◽

1970 ◽

Vol 44 (2) ◽

pp. 147-156

Author(s):

Tamanna Sultana ◽

GP Savage ◽

NG Porter ◽

DL McNeil ◽

JR Sedcole

Keyword(s):

Shelf Life ◽

Storage Temperature ◽

Initial Level ◽

Tomato Sauce ◽

Wasabia Japonica ◽

Different Temperatures ◽

Small Change ◽

Shelf Life Studies ◽

The Stability ◽

Storage Temperatures

Isothiocyanates (ITCs) contained in purees extracted from wasabi (Wasabia japonica (Miq) Matsum) can be used to manufacture a range of interesting spicy foods. In New Zealand, local manufacturers are showing interest in producing various forms of processed wasabi based sauces. However, isothiocyanates have been shown to degrade quickly in some situations. Therefore, in this study, the stability of allyl ITC was investigated in three wasabi flavoured products stored at four different temperatures (4, 10, 20 and 30°C) for 22 weeks. Two creamy (mayonnaise and tartare) sauces and a non-creamy sauce were prepared from an original recipe and flavoured with a known volume of "wasabi oil". Two types of pouches (clear and metallic plastic) were used to store each product and allyl ITC content was measured in the stored sauces at two week intervals. The initial level of allyl ITC found in mayonnaise, tartare and smoky tomato sauces were 415.3, 411.4 and 144.7 mg/ kg respectively, prior to storage. Temperature showed a strong influence in reducing allyl ITC (P=0.005 to <0.001) but no significant effect was identified for the two types of packets used. The non-creamy smoky tomato sauce was very unstable at 10°C or higher temperatures and the allyl ITC contents reduced rapidly with increasing storage temperatures. For instance, at 30°C, a 66% loss occurred by week 2 and a 90% loss occurred by week 6 in the smoky tomato sauce. However, mayonnaise and tartare sauces had a shelf life of 8 to 9 weeks with only a marginal reduction in allyl ITC (2% overall) at all the stored temperatures (4-30°C). These creamy sauces were characterized by a sudden fall in 10 weeks ending in a 69-70% loss of allyl ITC at 22 weeks. No microbial growth occurred in any of the sauces stored at any of the temperatures during the course of this storage experiment though very small change of colour was noticed for the sauces when stored at 30°C. Keywords: Bangladesh J. Sci. Ind. Res. 44(2), 147-156, 2009DOI: 10.3329/bjsir.v44i2.3665Bangladesh J. Sci. Ind. Res. 44(2), 147-156, 2009

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Influence of different method and different storage life on moisture and senzorial evaluation of durable salamis

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun200856040183 ◽

2008 ◽

Vol 56 (4) ◽

pp. 183-196

Author(s):

Hana Šulcerová ◽

Jiří Štencl ◽

A. Šulcová

Keyword(s):

Storage Time ◽

Storage Temperature ◽

Heat Treated ◽

Different Temperatures ◽

The Difference ◽

Total Difference ◽

Cut Surface ◽

Sausage Casing ◽

General Appearance

Heat-treated salamis “Vysočina“ were produced with standard way in a meat factory; their diameter was 55 mm. Samples were stored under laboratory conditions at different temperatures: 5, 10, 15, 20, and 25 °C and sensory analysed every week during one month storage. The dry matter (d.m.) was measured, too. Descriptors of general appearance, sausage casing, texture, cut surface, dry edge, smell, taste, and salty were monitored. Biggest changes were in descriptors general appearance and sausage casing (P < 0.001) and also in dry edge (P < 0.010) during the month period. Germs of moulds were found only at 5 and 10 °C. Rapid increase of d.m. in samples was noticeable in the first week of the storage time. It was 3 % d.m. at 5 °C and 11 % d.m. at 25 °C. Increase of d.m. of salamis continues slowly in the next three weeks period; the total difference was about 10 % d.m. in the temperature range measured. Decrease of d.m. at 5 °C was noticed in the last week of the measurement. The difference was 3.5 % d.m. This change means that the equilibrium moisture content of the samples of salamis has been reached at the temperature 5 °C. The best sensorial quality of salamis “Vysočina” was in the storage temperature ranged from 15 to 20 °C.

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Quality of fresh-cut avocado (Persea americana Mill.) stored under different temperatures

Ciência e Agrotecnologia ◽

10.1590/s1413-70542009000400021 ◽

2009 ◽

Vol 33 (4) ◽

pp. 1095-1102 ◽

Cited By ~ 5

Author(s):

Ana Carla Marques Pinheiro ◽

Eduardo Valério de Barros Vilas Boas ◽

Lucas Carvalho e Silva ◽

Alessandra de Paiva Alves ◽

Marcelo La Selva ◽

...

Keyword(s):

Persea Americana ◽

Sodium Hypochlorite Solution ◽

Rigid Plastic ◽

Randomized Design ◽

Pvc Film ◽

Different Temperatures ◽

Fresh Cut ◽

Hedonic Scale ◽

Storage Temperatures

The goal of this work was to evaluate the effect of different storage temperatures on the quality maintenance of fresh-cut 'Fortuna' avocado (Persea americana Mill.). The fruit was selected, washed and sanitized with sodium hypochlorite solution (190 ppm total residual chlorinee) for 15 minutes. After that, the tip was cut and the fruit was also cut in halves, peeled and the pit removed, manually. Then the halves were immersed in 0.5% calcium chlorite + 0.5% cysteine solution for 2 minutes, to avoid darkening and packed in rigid plastic covered with 20 micrometer thick plastic wrap (PVC film) with a permeability to O2, CO2 and water vapor of 15,000, 80,000 and 390 cm³/m²/day, respectively. The product was stored under 3 different temperatures 0, 5, 10ºC and evaluated at 5 different storege periods of 0, 2, 3, 5 and 6 days, in a randomized design in a 3x5 factorial. The storage of fresh-cut avocado at 5ºC is the best alternative because it determines better maintenance of quality of the avocado. These presented lower darkening of pulp, better scores for appearance and acceptability, lower softening and polyphenoloxidase activity, in comparison to those stored at 0 and 10ºC. The fresh-cut avocados stored at 5ºC presented a shelf life of 5 days, based, mainly on, appearance, score 7.3, sited between the concepts "like moderately" and "like very much" on a hedonic scale of 9 points and 86% of acceptability, at the end of 5 days of storage.

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Improving the Quality of Turkey Meat via Storage Temperature, Packaging Atmosphere, and Oregano (Origanum vulgare) Essential Oil Addition

Agriculture ◽

10.3390/agriculture10100463 ◽

2020 ◽

Vol 10 (10) ◽

pp. 463

Author(s):

Samir A. Mahgoub ◽

Mohamed E. Abd El-Hack ◽

Zohair S. Mulla ◽

Waleed R. El-Ghareeb ◽

Ayman E. Taha ◽

...

Keyword(s):

Essential Oil ◽

Storage Temperature ◽

Modified Atmosphere Packaging ◽

Modern World ◽

Origanum Vulgare ◽

Oregano Essential Oil ◽

E Coli ◽

Turkey Meat ◽

Storage Temperatures

The provision of plentiful good-quality food is a primary issue in the modern world. This work was planned to study the influence of packaging atmosphere and oregano (Origanum vulgare) essential oil addition [(vacuum packaging: T1 or modified atmosphere packaging or T2 (CO2/N2 = 4:6) or T3, T2 with oregano essential oil (T2 + EO)] under various storage temperatures (0, 5, 10, and 15 °C) on the control of survival of Escherichia coli O157:H7 and associated spoilage flora in sliced smoked turkey meat. The pathogen increased by only <1.0 log colony-forming unit (CFU)/g under all packaging and temperature combinations. Moreover, T1, T2, and T3 exerted practically similar inhibitory activity against the pathogen and dominating bacteria, with a relatively low growth of E. coli O157:H7 in sliced smoked turkey during the shelf life under all storage regimes compared to the control. However, the pathogen survival was highest on the sliced smoked turkey under T1, decreasing by only 0.67, 0.74, 0.63, and 1.30 log CFU/g within 37 days if kept at 0, 5, 10, and 15 °C, respectively. Under T2 and the same condition, E. coli O157:H7 in the product declined by only 0.31, 0.50, 0.72, and 1.10 log CFU/g within 37 days of storage, respectively. In the T3 samples, the pathogen was reduced by only 0.33, 0.67, 1.72, and 3.46 log CFU/g through 37 days of storage, respectively. Under T3 were E. coli O157:H7 populations in smoked turkey eliminated (negative by enrichment) under all conditions (after 129, 95, 95, and 43 days maintained at 0, 5, 10, and 15 °C, respectively) compared with other packaging temperature combinations. Thus, T3 contributed to developing ready-to-eat smoked turkey with enhanced product quality and eliminating the pathogen.

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Characterization of the Spoilage Microbiota of Hake Fillets Packaged Under a Modified Atmosphere (MAP) Rich in CO2 (50% CO2/50% N2) and Stored at Different Temperatures

Foods ◽

10.3390/foods8100489 ◽

2019 ◽

Vol 8 (10) ◽

pp. 489 ◽

Cited By ~ 4

Author(s):

Adriana Antunes-Rohling ◽

Silvia Calero ◽

Nabil Halaihel ◽

Pedro Marquina ◽

Javier Raso ◽

...

Keyword(s):

Storage Temperature ◽

Gene Sequencing ◽

16S Rrna Gene Sequencing ◽

Rrna Gene ◽

Modified Atmosphere ◽

Modified Atmospheres ◽

Different Temperatures ◽

Rrna Gene Sequencing ◽

Storage Temperatures

The aim of this study was to characterize the spoilage microbiota of hake fillets stored under modified atmospheres (MAP) (50% CO2/50% N2) at different temperatures using high-throughput 16S rRNA gene sequencing and to compare the results with those obtained using traditional microbiology techniques. The results obtained indicate that, as expected, higher storage temperatures lead to shorter shelf-lives (the time of sensory rejection by panelists). Thus, the shelf-life decreased from six days to two days for Batch A when the storage temperature increased from 1 to 7 °C, and from five to two days—when the same increase in storage temperature was compared—for Batch B. In all cases, the trimethylamine (TMA) levels measured at the time of sensory rejection of hake fillets exceeded the recommended threshold of 5 mg/100 g. Photobacterium and Psychrobacter were the most abundant genera at the time of spoilage in all but one of the samples analyzed: Thus, Photobacterium represented between 19% and 46%, and Psychrobacter between 27% and 38% of the total microbiota. They were followed by Moritella, Carnobacterium, Shewanella, and Vibrio, whose relative order varied depending on the sample/batch analyzed. These results highlight the relevance of Photobacterium as a spoiler of hake stored in atmospheres rich in CO2. Further research will be required to elucidate if other microorganisms, such as Psychrobacter, Moritella, or Carnobacterium, also contribute to spoilage of hake when stored under MAP.

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Study on Changes of Textural and Biochemical Properties of Tuna during Ultra-Low Temperature Storage

Environment and Natural Resources Research ◽

10.5539/enrr.v6n2p51 ◽

2016 ◽

Vol 6 (2) ◽

pp. 51 ◽

Cited By ~ 1

Author(s):

Yu-ying PAN ◽

Xiao-hua QIU ◽

Jin-sheng YANG

Keyword(s):

Soluble Protein ◽

Storage Time ◽

Storage Temperature ◽

Frozen Storage ◽

Biochemical Properties ◽

Texture Profile ◽

Low Temperature Storage ◽

Different Temperatures ◽

Temperature Storage

The effect of TPA and biochemical properties of Yellow Tuna during frozen storage at different temperatures(-18°C, -25°C, -35°C, -45°C, -55°C, -65°C) were studied by measuring the textural characteristics (the hardness, Springiness) salt-solubility of myofibrillar proteins, Ca2+ATPase activities. The results indicated that the hardness, springiness, actomyosin salt-solubility, Ca2+ATPase activities decreased during the process of frozen storage. Meanwhile, the frozen stored temperature showed great effect on the freezing denaturation of protein (P < 0.05). For the same longer of the storage time, the lower frozen temperature, the less extent of freeze denaturation; Stored in -18°C for three months, the content of Salt soluble protein reduced to zero; Stored in -25°C for 120 days, the content of salt soluble protein also reduced to zero; But stored in -55°C and -65°C, the change is very little. Ca2+ATPase activities also reduced to zero after stored in -18°C and -25°C for three months. But stored in -55°C and -65°C, there is no obvious change. Moreover, there is a Positive relationship between the change of texture profile and the content of Salt soluble protein, the lower the storage temperature, the less of the change of texture profile. Therefore, when it is stored in -55°C, the quality of Yellow Tuna can be maintained to the maximum extent within six months.

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Different Temperatures of Frozen Storage Effects on Proteins of Crisp Grass Carp (Ctenopharyngodon idellus C.et V)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.1830 ◽

2013 ◽

Vol 781-784 ◽

pp. 1830-1834 ◽

Cited By ~ 2

Author(s):

Wan Ling Lin ◽

Xian Qing Yang ◽

Shu Xian Hao ◽

Lai Hao Li ◽

Xiao Hu ◽

...

Keyword(s):

Grass Carp ◽

Protein Solubility ◽

Frozen Storage ◽

Drip Loss ◽

Texture Characteristics ◽

Different Temperatures ◽

Storage Effects ◽

Lower Temperature ◽

Induced Changes ◽

Storage Temperatures

This article focused on the study of frozen storage temperatures effect on protein of crisp grass carp, and then induced changes of texture of crisp grass carp muscle. During frozen storage, lower temperature, better texture of crisp grass carp muscle. The little changes of texture characteristics of crisp grass carp were related to lower changes of drip loss, cooking loss, protein solubility and thermal stability. The results indicated that lower temperature of frozen storage was beneficial to maintain the mastication of crisp grass carp.

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Changes in Biochemical Characteristics and Activities of Ripening Associated Enzymes in Mango Fruit during the Storage at Different Temperatures

BioMed Research International ◽

10.1155/2014/232969 ◽

2014 ◽

Vol 2014 ◽

pp. 1-11 ◽

Cited By ~ 12

Author(s):

Md. Anowar Hossain ◽

Md. Masud Rana ◽

Yoshinobu Kimura ◽

Hairul Azman Roslan

Keyword(s):

Shelf Life ◽

Biochemical Parameters ◽

Storage Time ◽

Storage Temperature ◽

Starch Content ◽

Titratable Acidity ◽

Different Temperatures ◽

Soluble Solid ◽

Storage Temperatures ◽

Carbohydrate Contents

As a part of the study to explore the possible strategy for enhancing the shelf life of mango fruits, we investigated the changes in biochemical parameters and activities of ripening associated enzymes of Ashwina hybrid mangoes at 4-day regular intervals during storage at −10°C, 4°C, and30±1°C. Titratable acidity, vitamin C, starch content, and reducing sugar were higher at unripe state and gradually decreased with the increasing of storage time at all storage temperatures while phenol content, total soluble solid, total sugar, and nonreducing sugar contents gradually increased. The activities of amylase,α-mannosidase,α-glucosidase, and invertase increased sharply within first few days and decreased significantly in the later stage of ripening at30±1°C. Meanwhile polyphenol oxidase,β-galactosidase, andβ-hexosaminidase predominantly increased significantly with the increasing days of storage till later stage of ripening. At −10°C and 4°C, the enzymes as well as carbohydrate contents of storage mango changed slightly up to 4 days and thereafter the enzyme became fully dormant. The results indicated that increase in storage temperature and time correlated with changes in biochemical parameters and activities of glycosidases suggested the suppression ofβ-galactosidase andβ-hexosaminidase might enhance the shelf life of mango fruits.

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Effect of Dry and Wet Storage at Different Temperatures on the Vase Life of Cut Flowers

HortTechnology ◽

10.21273/horttech.11.2.199 ◽

2001 ◽

Vol 11 (2) ◽

pp. 199-202 ◽

Cited By ~ 18

Author(s):

Juan-Carlos Cevallos ◽

Michael S. Reid

Keyword(s):

Storage Temperature ◽

Dianthus Caryophyllus ◽

Vase Life ◽

Cut Flowers ◽

Tulipa Gesneriana ◽

Wet Storage ◽

Different Temperatures ◽

Narcissus Pseudonarcissus ◽

C 32 ◽

Storage Temperatures

After storage at different temperatures for a simulated transportation period, the vase lives at 20 °C (68 °F) of carnations (Dianthus caryophyllus `Imperial White'), daffodils (Narcissus pseudonarcissus `King Alfred'), iris (Iris hollandica `Telstar'), killian daisies (Chrysanthemum maximum), paperwhite narcissus (Narcissus tazetta `Paperwhite'), roses (Rosa {XtimesX}hybrida `Ambiance'), and tulips (Tulipa gesneriana) decreased with increasing storage temperature. There were no significant differences between the vase life of flowers stored dry and flowers stored in water when storage temperatures were from 0 to 10 °C (32 to 50 °F). The vase life after wet storage at temperatures of 12.5 °C (54.5 °F) and greater was significantly higher than vase life after dry storage at those temperatures for all the flowers studied. Iris and carnation flowers survived storage at 15 and 20 °C (59 and 68 °F) only when stored in water.

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Textural Changes of Asparagus in Relation to Delays in Cooling and Storage Conditions

HortTechnology ◽

10.21273/horttech.2.3.378 ◽

1992 ◽

Vol 2 (3) ◽

pp. 378-381 ◽

Cited By ~ 6

Author(s):

Luis Hernández-Rivera ◽

Robert Mullen ◽

Marita Cantwell

Keyword(s):

Shear Force ◽

Storage Temperature ◽

Storage Conditions ◽

Asparagus Officinalis ◽

Shear Transfer ◽

Textural Changes ◽

And Storage ◽

Temperature Time ◽

Storage Temperatures

Asparagus (Asparagus officinalis L.) spears (cv. UC 157) trimmed to 20 cm were cooled 0, 4, 8, 12, 16, and 20 hours after harvest and evaluated for resistance to shear at 5 and 10 cm above the cut end immediately after cooling and during storage at 0.5, 2.5, and 5C. Resistance to shear increased during cooling delays and with time in storage. Initial cooling delays and simulated marketing conditions (transfer to 15C for 1 day) were the principal causes of increased resistance to shear. A 4-hour cooling delay resulted in an average 40% increase in resistance to shear. Transfer to 15C for 1 day resulted in a greater increase in shear force in the rapidly cooled than in the delayed-cooled spears. Increases in resistance to shear during storage varied from 0% to 50% and depended on the storage temperature, time, and the initial cooling delay. Spears trimmed to a green base showed less increase in shear force after storage than did spears trimmed to a white base. The visual quality of asparagus stored for 14 days was similar (excellent) among spears from different storage temperatures and between green- and white-base spears. Storage quality after 24 days had decreased more in spears stored at 5C than at 2.5 or 0.5C, and more in the green-base than the white-base spears.

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