scholarly journals Initial Treatment, Sublimation Drying and Storage Time of Sweet Pepper Crisps. Physico-Chemical Quality − Part I

2020 ◽  
Vol 24 (1) ◽  
pp. 57-68
Author(s):  
Dorota Sokołowska ◽  
Zbigniew Kowalczyk
Keyword(s):  
Ascorbic Acid ◽  
Storage Time ◽  
Sweet Pepper ◽  
Raw Material ◽  
Chemical Quality ◽  
Physico Chemical ◽  
Freeze Dried ◽  
Initial Processing ◽  
The Impact ◽  
And Storage

AbstractThe paper presents the impact of the initial processing, cultivar, and storage time on the physico-chemical quality of freeze-dried crisps. Sweet pepper after initial washing and crushing was subjected to further four combinations of the initial processing. The first combination included freezing, the second one blanching in 98°C and 2-minutes time, the third one -dehydration in 2% solution of ascorbic acid and the fourth one -dehydration in 2% solution of sodium chloride. Both types of dehydration were carried out in 70°C for 20 minutes with a 1:4 participation of raw material to osmotic solution. Blanched and dehydrated raw materials were subjected to freezing in -18°C for 24 hours. After the completed process of freezing, the samples were moved to a freezer-drier and were dried by sublimation in -18°C and the reduced pressure of 63 Pa. Based on the research analyses a significant variability of physico-chemical properties of the obtained freeze-dried sweet pepper with regard to a cultivar, processing type and storage time were reported. Freeze-dried yellow sweet pepper was the most similar to the fresh raw material. It was dehydrated in the ascorbic acid solution. The storage time considerably influenced the reduction of the quality properties of sweet pepper crisps.

scholarly journals Initial Treatment, Sublimation Drying and Storage Time of Sweet Pepper Crisps. Microbiological Quality − Part II

2020 ◽  
Vol 24 (1) ◽  
pp. 69-78
Author(s):  
Dorota Sokołowska ◽  
Katarzyna Grotkiewicz
Keyword(s):  
Ascorbic Acid ◽  
Storage Time ◽  
Microbiological Quality ◽  
Sweet Pepper ◽  
Reduced Pressure ◽  
Mesophilic Bacteria ◽  
Initial Processing ◽  
The Impact ◽  
And Storage

AbstractThe paper presents the impact of the initial processing, cultivar, and storage time on the physical and chemical quality of freeze-dried sweet pepper crisps. Sweet pepper after initial washing and crushing was subjected to further four combinations of the initial processing. The first combination included freezing, the second one blanching in 98°C and 2-minutes time, the third one -dehydration in 2% solution of ascorbic acid and the fourth one - dehydration in the 2% solution of sodium chlo-ride. Both types of dehydration were carried out in 70°C for 20 minutes with a 1:4 participation of raw material to osmotic solution. Blanched and dehydrated raw materials were subjected to freezing in -18°C for 24 hours. After the completed process of freezing, the samples were moved to a freezer-drier and were dried by sublimation in -18°C and the reduced pressure of 63 Pa. The research that was carried out proved that the microbiological quality of the obtained sweet pepper lyophilizes was significantly affected by the cultivar, treatment type and storage time. These factors significantly diversified the number of micro-organisms in sweet pepper crisps. No initial processing before sublimation drying caused a considerably average increase of the number of psychrophile and mesophilic bacteria in crisps from both sweet pepper cultivars. A considerable reduction of their total number took place during blanching and dehydration in the ascorbic acid solution and sodium chloride solution. Additionally, along with the storage time, reduction of the total number of psychrophilic, mesophilic bacteria, fungi and yeasts was reported.

Effect of drying and storage time on the physico-chemical properties of mango leathers

2006 ◽  
Vol 41 (6) ◽  
pp. 635-638 ◽  
Author(s):  
Henriette M.C. Azeredo ◽  
Edy S. Brito ◽  
Germano E.G. Moreira ◽  
Virna L. Farias ◽  
Laura M. Bruno
Keyword(s):  
Storage Time ◽  
Chemical Properties ◽  
Physico Chemical ◽  
And Storage

scholarly journals The effect of freezing-drying, cloudiness and concentration on the keeping quality of various blackcurrant products

1964 ◽  
Vol 36 (1) ◽  
pp. 161-180
Author(s):  
Taina Kuusi
Keyword(s):  
Ascorbic Acid ◽  
Relevant Literature ◽  
Organoleptic Properties ◽  
Black Currant ◽  
Organoleptic Evaluation ◽  
Freeze Dried ◽  
Juice Concentrate ◽  
The Stability ◽  
And Storage

Experiments have been made in the development of various new black-currant products, such as cloudy juice, juice concentrate and various freeze-dried preparations, along with a study of the effect of these different methods of preparation on the initial quality and storage properties. The quality was assessed from the stability of ascorbic acid and colour, the aroma number, and organoleptic evaluation. Storage lasted up to 8 months. It was established that the cloudiness exercised a slight protective effect on ascorbic acid. However, the instability of the cloud meant that the appearance of the cloudy juice was less attractive than that of the clear juice. No well-founded advantage of the cloudy juice could be demonstrated. Concentration proved less suitable, as there occurred harmful changes in ascorbic acid, colour and organoleptic properties. The freezing-drying method was excellent with respect to ascorbic acid and colour. In contrast, considerable losses in aroma occurred, with consequent weakening of the organoleptic properties. This method would be of advantage only in combination with aroma recovery, and solution of the financial problems involved. The results are discussed in the light of relevant literature.

scholarly journals The influence of selected preservation methods and storage time on the content of antioxidants in blackthorn (Prunus spinosa L.) fruits

2019 ◽  
Vol 74 (1) ◽  
pp. 53-62
Author(s):  
KATARZYNA OLESIŃSKA ◽  
DANUTA SUGIER ◽  
ŁUKASZ SĘCZYK
Keyword(s):  
Room Temperature ◽  
Storage Time ◽  
Antioxidant Properties ◽  
Iron Ions ◽  
Polyphenol Content ◽  
Total Polyphenols ◽  
Dried Fruits ◽  
Prunus Spinosa ◽  
Freeze Dried ◽  
And Storage

The aim of the study was to determine the influence of selected methods of preservation and storage time on the content of antioxidants in blackthorn fruit (Prunus spinosa L.). Preserved fruits were stored for 13 and 26 weeks without light at room temperature (freeze-dried and convection dried) and at –20°C (frozen samples). It was shown that both the method of preservation and the storage time had significant influence on the content of polyphenols (anthocyanins, flavonoids, total polyphenols) and antioxidant properties (Fe3+ reduction strength) of blackthorn fruit. As the storage time progressed, the anthocyanins content decreased in all preservation variants. In the case of frozen fruit after 26 weeks of storage, the content of flavonoids (by 12.5%), total polyphenols (by 48%) and the ability to reduce the iron ions were increased (by 55%). In turn, in the dried fruits after this period, the anthocyanins content, the polyphenol content and reduction strength were reduced. The highest values of the parameters evaluated after the assumed storage time has been demonstrated in lyophilizates.

scholarly journals Effect of Processing Methods and Storage Time on the Content of Bioactive Compounds in Blue Honeysuckle Berry Purees

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 860 ◽  
Author(s):  
Anna Grobelna ◽  
Stanisław Kalisz ◽  
Marek Kieliszek
Keyword(s):  
Ascorbic Acid ◽  
Thermal Treatment ◽  
Bioactive Compounds ◽  
Storage Time ◽  
Lower Content ◽  
Total Polyphenols ◽  
Lonicera Caerulea ◽  
Processing Methods ◽  
And Storage ◽  
Blue Honeysuckle

In this study, we aimed to investigate the effect of processing methods and storage time on selected parameters of quality in the purees of blue honeysuckle berries. We investigated the content of bioactive compounds such as anthocyanins, L-ascorbic acid, and total polyphenols (TPs). We tested four processing methods and two varieties of blue honeysuckle berry (Lonicera caerulea L.var. Sineglaska and Volshebnica). The purees were analyzed immediately after production, and after two and four months of storage at 20 °C without exposure to light. According to our results, thermal treatment of the fruits for 5 min resulted in obtaining purees with a higher content of anthocyanins and TPs, but lower content of L-ascorbic acid. However, sieving fruits that were not thermally treated resulted in a higher content of L-ascorbic acid. Furthermore, purees prepared from the fruits of the Volshebnica cultivar were richer in bioactive compounds than that of purees prepared from the Sineglaska cultivar. In addition, the content of anthocyanins, L-ascorbic acid, and TPs decreased with storage time.

scholarly journals Kualitas Fisik Daging Sapi Peranakan Ongole dengan Pemberian Asam Askorbat dan Penyimpanan pada Suhu 50C

2010 ◽  
Vol 8 (1) ◽  
pp. 26
Author(s):  
E P Samodra ◽  
H Cahyono
Keyword(s):  
Ascorbic Acid ◽  
Beef Cattle ◽  
Storage Time ◽  
Cooking Loss ◽  
Water Holding Capacity ◽  
Storage Duration ◽  
Physical Quality ◽  
And Storage ◽  
Water Holding

<p>The research was conducted to investigate the effect of soaking meat of Peranakan Ongole cattle with ascorbic acid and storage duration at 50C on physical quality of meat. The experiment was done in Complete Randomised Design by factorial 3 x 3. First factor was ascorbic acid with 3 levels (0%, 5%, 1%), and second factor is storage duration with 3 levels (0, 5, and 6 days). Variables that were measured: tenderness, cooking loss, water holding capacity and pH. Data were analyzed by variance analysis and the significant result were tested by Duncan’s test. Tenderness average for ascorbic acid ranging between 1,60 – 1,62 kg/cm2, and for storage duration was increased from 1,83 to 1,38 kg/cm2. Cooking loss average for ascorbat acid ranged from 43,33 to 44,89%, and for storage duration increased from 40,00 to 47,00%. Water holding capacity average for ascorbic acid ranging between 32,88 – 33,65%, but for storage duration decreased from 34,61 to 32,32%. The pH average for ascorbic acid ranging from 5,99 to 6,16, and increased for storage duration from 6,43 to 5,84. It can be concluded that physical quality of beef cattle was not affected<br />bay ascorbic acid up to 1%, but was significantly decreased by storage duration (p&lt;0,05).</p><p>Key words: Pernakan Ongole meat, ascorbat acid, storage time</p>

scholarly journals Characteristics of Tobacco Stem Particleboard in Printing Load Variations and Storage Time

2020 ◽  
Vol 1 (3) ◽  
pp. 8-14
Author(s):  
Winda Amilia ◽  
Andrew Setiawan Rusdianto ◽  
Whina Sofiana
Keyword(s):  
Water Absorption ◽  
Water Content ◽  
Research Method ◽  
Storage Time ◽  
Raw Material ◽  
Particle Board ◽  
Load Variations ◽  
Recommended Treatment ◽  
Tobacco Stem ◽  
And Storage

Tobacco is an important commodity in the economy in Indonesia. Tobacco stems are worthless waste. Tobacco stems contain 56.10% cellulose, making it high potential as a particle board raw material. The process of making particleboard that affects quality is the pressing process during printing. Greater pressure printing presses make bonds between particles stronger. Strong bonding between particles is intended so that the board does not change during storage. The purpose of this study is to determine the characteristics of particleboard in various variations of printing pressure load and storage time and to find out the best treatment as a recommendation in the manufacture of tobacco stem particleboard. The research method was factorial CRD with a combination of treatments between 2 factors namely printing load (4 kg and 8 kg) and storage time (0, 12, and 24 days). The results showed 1.13 - 1.25 g.cm-3 for the density value, water content 4.97 - 12.57%, and water absorption 240.03 - 208.00%. MOE and MOR values ​​were 16000.13 - 36222.77 kgf. cm-2 and 824.47 - 1697.83 kgf.cm-2. The recommended treatment load is 8 kg printing pressure with 12 days of storage time.

scholarly journals Study on Varying Salt Level and Storage Time on Physico-Chemical and Sensory Quality of Beef Nugget

2014 ◽  
Vol 24 (1-2) ◽  
pp. 149-158
Author(s):  
MAK Talukder ◽  
MA Hashem ◽  
SME Rahman ◽  
MS Islam ◽  
MM Hossain ◽  
...  
Keyword(s):  
Storage Time ◽  
Sensory Quality ◽  
Storage Temperature ◽  
Chemical Properties ◽  
Salt Level ◽  
Physico Chemical ◽  
Significant Difference ◽  
Different Temperatures ◽  
And Storage

The experiment was conducted to find out the effect of salt and storage temperature on the physico-chemical properties of beef nugget. For this purpose nugget samples were divided into two parts; one is called fresh nugget and another is preserved nugget at different temperatures. Then the fresh samples as well as the preserved samples were divided into four subdivisions. Then these are treated with different salt levels (0, 1.5, 3 and 5% salt level). The preserved samples were stored at 4oC and -20oC. Samples preserved at 4oC were stored in the refrigerator for 21 days and were analyzed on 7th day, 14th day and 21th day and samples preserved at -20oC were stored in the refrigerator for 60 days and were analyzed on 15th day, 30th day, 45th day and 60th day of preservation. Dry matter and Ash content of all the samples increased significantly (P<0.01) with the advancement of storage time and salt level. CP% of fresh samples was 22.31, 20.55, 20.13 and 20.55 at 0, 1.5, 3 and 5% salt concentration. CP, DM, Ash and Fat also varied among the samples significantly (P<0.01). Highly significant difference is observed in preserved samples than in fresh samples at different salt levels. Fresh nugget treated with 1.5% salt found to be more acceptable in terms of sensory evaluation. So we recommend fresh nugget to be best for consumption.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19280 Progress. Agric. 24(1&2): 149 - 158, 2013

scholarly journals PENGARUH WADAH, SUHU DAN WAKTU SIMPAN TERHADAP PERKECAMBAHAN BENIH MENIRAN (Phyllanthus niruri L.)

2019 ◽  
Vol 12 (2) ◽  
Author(s):  
Nurul Husniyati Listyana ◽  
Rahma Widyastuti ◽  
Widyantoro Widyantoro
Keyword(s):  
Seed Germination ◽  
Storage Time ◽  
Storage Temperature ◽  
Storage Period ◽  
Raw Material ◽  
Wild Plant ◽  
Phyllanthus Niruri ◽  
Storage Container ◽  
Genetic Traits ◽  
And Storage

ABSTRACT Meniran (Phyllanthus niruri L.) is a wild plant that used extensively as a raw material for traditional medicine but has not been cultivated yet. Meniran cultivation requires the availability of quality seeds and seedlings to produce the high productivity. The ability of seeds to germinate (seed viability) after the storage period is influenced by several factors both internal and external, including seed water content, genetic traits, initial viability and packaging material, storage temperature and humidity, microorganisms, and human factors.. The study aims to determine the effect of storage containers, storage temperature and time of storage on the power of meniran seed germination. The study was conducted in March-April 2018 at the B2P2TO2T Seed Laboratory. The research design was Factorial Completely Randomized Design with 3 factors and 3 replications. The first factor was a storage container consisting of plastic, paper envelopes and aluminum foil. Second factor was a storage temperature consisting of 0 ° C, -20 ° C and -50 ° C.  The third factor was storage time which consists of 2 weeks, 4 weeks, 6 weeks, 8 weeks and 10 weeks. The results showed that the storage container and storage time had a significantly different effect on meniran seed germination. The storage time does not have a significant effect on germination. Together, the storage container, storage temperature and storage time do not have a significant effect on meniran seed germination. The interaction between the storage temperature and the storage time and the interaction between the storage container and the storage time give significantly different effects on germination. ABSTRAK Meniran (Phyllanthus niruri L.) merupakan tanaman liar yang simplisianya banyak dibutuhkan sebagai bahan baku obat tradisional namun belum dibudidayakan. Budidaya tanaman meniran memerlukan ketersediaan benih dan bibit yang bermutu untuk menghasilkan produktivitas yang tinggi. Kemampuan benih untuk berkecambah (viabilitas benih) setelah masa penyimpanan dipengaruhi oleh beberapa faktor baik internal maupun eksternal, meliputi kadar air benih, sifat genetik, viabilitas awal serta bahan pengemas, suhu dan kelembaban ruang simpan, mikroorganisme, serta faktor manusia. Penelitian bertujuan untuk mengetahui pengaruh wadah simpan, suhu simpan dan waktu simpan terhadap daya perkecambahan benih meniran. Penelitian dilaksanakan pada bulan Maret-April 2018 di Laboratorium Benih B2P2TO2T. Desain penelitian yang digunakan yaitu Rancangan Acak Lengkap Faktorial dengan 3 faktor dan 3 ulangan. Faktor 1 yaitu wadah penyimpanan yang terdiri dari plastik, kertas amplop dan aluminium foil. Faktor 2 yaitu suhu simpan yang terdiri dari 0°C, -20°C dan -50°C. Faktor 3 yaitu waktu penyimpanan yang terdiri dari 2 minggu, 4 minggu, 6 minggu, 8 minggu dan 10 minggu. Hasil penelitian menunjukkan wadah simpan dan waktu simpan memberikan pengaruh yang berbeda signifikan terhadap perkecambahan benih meniran.  Suhu simpan tidak memberikan pengaruh yang berbeda signifikan terhadap perkecambahan. Secara bersama-sama wadah simpan, suhu simpan dan waktu simpan tidak memberikan pengaruh yang berbeda signifikan terhadap perkecambahan benih meniran. Interaksi antara suhu simpan dan waktu simpan serta interaksi antara wadah simpan dan waktu simpan memberikan pengaruh yang berbeda signifikan terhadap perkecambahan.  

Sign in / Sign up

Export Citation Format

Share Document