SOME BIOCHEMICAL CHANGES ON STORAGE IN POTATOES FROM PRINCE EDWARD ISLAND, AND THEIR RELATION TO THE QUALITY OF CHIPS

1958 ◽  
Vol 38 (4) ◽  
pp. 457-463 ◽  
Author(s):  
W. W. Hawkins ◽  
Margaret Black ◽  
Carol Marie Dicks
Keyword(s):  
Irish Cobbler ◽  
Prince Edward Island ◽  
Critical Concentration ◽  
Reducing Sugar ◽  
Biochemical Changes ◽  
Green Mountain

Different varieties of potatoes were characterized by differences in their content of water, starch, and reducing sugar, and in susceptibility to change in response to the surrounding temperature.A critical concentration of 0.4 per cent reducing sugar was found, above which chips were dark brown, and unacceptable in flavour. Storage at 35° F. caused a rise in the concentration of reducing sugar in all varieties to between 1.5 and 4.0 per cent in 5 to 14 weeks. During storage at 50° F. the reducing sugar usually rose above 0.4 per cent in 9 to 13 weeks.Shrinkage and rot developed markedly in the Sebago, and to a less extent in the Katahdin, when the temperature was raised from 50° or 35° to 70° F., and the chips produced from them were poor in texture and flavour.A fall in the level of reducing sugar below 0.4 per cent occurred in 3 to 9 weeks during conditioning at 70° F. in the Netted Gem, Green Mountain, and Irish Cobbler varieties, and the chips from these were acceptable.The biochemical behaviour of the Netted Gem and Irish Cobbler was most conducive to the production of acceptable chips.

Effect of Chlorine Dioxide Gas Treatment on Surface Sterilization of Grape

2011 ◽  
Vol 236-238 ◽  
pp. 2939-2944 ◽  
Author(s):  
Ri Ya Jin ◽  
Shuang Qi Hu ◽  
Zhi Chao Chi
Keyword(s):  
Chlorine Dioxide ◽  
Treatment Time ◽  
Reducing Sugar ◽  
Gas Treatment ◽  
Surface Sterilization ◽  
Log Reduction ◽  
Chlorine Dioxide Gas ◽  
Spoilage Bacteria ◽  
Effect Of Chlorine

Experiments were conducted to investigate the effect of concentration and duration of chlorine dioxide gas treatment on Surface sterilization of grape at 25°C. The results showed that the values of inactivate bacterial log reduction ofBotrytis cinerea,Penicilliumandalternariaincreased with the increasing of ClO2gas concentrations and treatment time. When the concentrations and treatment time was about 10 mg/m3and 30 minutes, respectively, more than 4 log reduction was obtained for the three spoilage bacteria on grape surface. Furthermore, the effect of chlorine dioxide gas treatment on quality of grape was investigated. It was found that the contents of vitamin C (Vc) and reducing sugar (RS) in grape also increased compared with grape without ClO2gas treatment.

scholarly journals Comparative Study on Physicochemical Properties of Selected Mango (Mangifera indica L.) Varieties in Northern Bangladesh

2019 ◽  
Vol 52 (1) ◽  
pp. 54-65
Author(s):  
M.M. Rashid ◽  
H. Khatun ◽  
M.F. Rayhan ◽  
M.E.A. Plabon ◽  
M.U. Hossain ◽  
...  
Keyword(s):  
Physicochemical Parameters ◽  
Fruits And Vegetables ◽  
Mangifera Indica ◽  
Ash Content ◽  
Reducing Sugar ◽  
Soluble Solids ◽  
Total Sugars ◽  
Titrable Acidity ◽  
Total Carbohydrates

Abstract Fruits and vegetables are important sources of nutrients for mankind. Among the various fruits available in Bangladesh, mango occupies a vital place in the human nutrition for its delicious taste and higher nutritious value. In this study, five mango varieties, viz. Fazli, Amrupali, Langra, Gopalbogh and Misribogh, were tested to evaluate the quality of these mango varieties available in Northern Bangladesh. Physiochemical characteristics, including moisture, ash, total carbohydrates, total solids, total soluble solids (TSS), pH, acidity, total sugars and ascorbic acid contents were evaluated. The results showed that there were significant (p< 0.05) differences among mangoes of all varieties for physicochemical parameters. In case of proximate composition, the mango variety Amrupali showed the highest ash content (2.34±0.15) and fat content (1.18±0.13). Protein content (0.94±0.12) and total fiber (2.67%) content was shown to be the highest by Gopalbogh and Misribogh, respectively. The selected mango varieties contained TSS of 12.87~20.55oBrix, pH of 4.45~4.67, titrable acidity of 0.07~0.42%, reducing sugar of 8.40~15.43%, non-reducing sugar of 9.24~10.48%, and total sugarof 18.88~25.12%. The study findings would be helpful for the consumers, dietitian and industry policymakers.

Involvement of ethylene signaling in zinc oxide nanoparticle-mediated biochemical changes inArabidopsis thalianaleaves

2019 ◽  
Vol 6 (1) ◽  
pp. 341-355 ◽  
Author(s):  
Ali Raza Khan ◽  
Abdul Wakeel ◽  
Noor Muhammad ◽  
Bohan Liu ◽  
Minjie Wu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Metallic Nanoparticles ◽  
Agricultural Land ◽  
Biochemical Changes ◽  
Ethylene Signaling ◽  
Zinc Oxide Nanoparticle ◽  
Yield And Quality ◽  
Oxide Nanoparticle

The growing use of metallic nanoparticles in industry has resulted in their accumulation in agricultural land, which poses a serious threat to the yield and quality of crops worldwide.

scholarly journals GUAVA LEAVES, CORN COBS, AND MANGOSTEEN PEELS AS ANTIOXIDANTS AND NATIONAL STANDARDIZED NATURAL PRESERVATIVES FOR COCONUT BROWN SUGAR

2019 ◽  
pp. 79-82
Author(s):  
ADITYA PRATAMA PUTRA ◽  
KINTAN NUR ROMADHONA ◽  
ROSIANA SOFIA ANGGRAENI ◽  
AI RIAN JULYANTI ◽  
RETNO FITRI WIDIASTUTI ◽  
...  
Keyword(s):  
Ph Value ◽  
Sugar Content ◽  
Sweet Taste ◽  
Reducing Sugar ◽  
National Standard ◽  
Brown Sugar ◽  
Corn Cobs ◽  
Guava Leaves ◽  
Natural Preservatives

Objective: Below standard brown sugar is a sugar that cannot be made or resembles dodol (a traditional and sticky confection) because the sap is damaged. Although the sap is made into brown sugar, the product will not last long and become soft-textured sugar. The aim of this research is to prevent below standard sap and produces coconut sugar in accordance with Indonesian National Standard (SNI) using natural preservatives were formulated from guava leaves, corn cobs, and mangosteen peels. Methods: The formulation of guava leaves, corn cobs, and mangosteen peels was designed through several stages by testing the composition of the materials. The first step was measuring the pH value of each material with concentration 4.5%, which were 4.5 g per material and it was compared to the composition of the formula after the concentration of each material was combined to get the basis pH. The second step was formulation to get the natural preservatives by applying the formulas on the tap process of sap until the manufacturing process to get the coconut sugar. Quality of coconut sugar was conducted SNI 01-3743-1995 which included oven method for testing water content and insoluble parts, Luff schoorl method for reducing sugar content and sucrose, and atomic absorption spectroscopy method for testing the contamination of Cu metal. Results: Guava leaves, corn cobs, and mangosteen peels with each material 4.5% were the optimal concentrations as natural preservatives to inhibit fermentation process of sap. Coconut sugars were obtained using these natural preservatives. Coconut sugar that obtained had the moisture content was 0.2402%, the ash content was 1.3%, reducing sugar content was 0.39%, the sucrose level was 69.99%, and the metal contamination was 0.201 mg/kg Cu. While the results of organoleptic tests indicated the brownish-yellow sugar, a typical sweet taste of sugar, and the normal smell of coconut sugar. All of the coconut sugar properties were meet with SNI. Conclusion: Guava leaves, corn cobs, and mangosteen peels were effective as natural preservatives and antioxidants to produce the best quality of coconut sugar according to the SNI.

Effect of Mechanical Damages and Storage Conditions on Quality of Markies cv. Potatoes for Processing

2019 ◽  
pp. 1-5
Author(s):  
Dreice Nascimento Gonçalves ◽  
Luciana Gomes Soares ◽  
Ariana Mota Pereira ◽  
Paula Acácia Silva Ramos ◽  
Maria Eduarda Da Silva Guimarães ◽  
...  
Keyword(s):  
Soluble Sugar ◽  
Mechanical Damage ◽  
Storage Conditions ◽  
Reducing Sugar ◽  
Control Treatment ◽  
Experimental Unit ◽  
Total Soluble Sugar ◽  
And Control ◽  
And Storage

Aims: Evaluate whether mechanical damage and storage conditions affect the quality of the ‘Markies’ potato for processing. Study Design: The experimental design was the completely randomized, in the scheme of split-plots. The plots were composed of treatments with and without mechanical damage and the subplots were made up by the evaluation times, with 5 replicates, where the experimental unit was composed of 2 tubers. Place and Duration of Study: Tubers of the ‘Markies’ cultivar from the producing region of Perdizes, State of Minas Gerais, were planted in June 2016 and harvested in October 2016. Methodology: The tubers were stored for 2 months at 8°C, and further divided into treatment with damage, in which the tubers were subjected to impact and abrasion; and control treatment, in which the tubers were not damaged. After that, they were stored at 28°C and evaluated for their loss of loss of accumulated fresh mass (FML), total soluble sugar (TSS), reducing sugar (RS), non-reducing sugar (NRS) and color after frying in the periods of 0, 12, 24, 36 and 48 h after being placed at room temperature. Results: The mechanical damage in the tubers increased FML, however, it did not affect the content of TSS, NRS, RS and color after frying. Increases were observed in the content of TSS and NRS after 12 h of evaluation. Grade 2 was assigned to the coloring scale after frying for the tubers regardless of treatment or evaluation period. Conclusion: Mechanical damage increases the FML and the ‘Markies’ cultivar is suitable for the industry of pre-fried potato processing even under the occurrence of mechanical damage and exposure to high temperatures.

scholarly journals Analysis of Sugarcane Juice Quality Indexes

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Zeqing Xiao ◽  
Xiaoping Liao ◽  
Shuaiyin Guo
Keyword(s):  
Production Management ◽  
Vital Role ◽  
Reducing Sugar ◽  
Sugarcane Juice ◽  
Mature Stage ◽  
Juice Quality ◽  
Content Increase ◽  
Sucrose Content ◽  
Quality Indexes

The analysis of the quality indexes of sugarcane juice plays a vital role in the process of refining sugarcane, breeding, cultivation, and production management. The paper analyzes the dynamic laws of five quality indexes (i.e., brix, purity, polarization, sucrose content, and reducing sugar) combined with graphs over time along the course of crushing season (December–March) in Guangxi province of China. During this time, the sugarcane is in the mature stage and hypermature stage. At the beginning of December to early January, during which sugarcane is in the later stage of maturity, the nutrients are accumulating, causing brix, purity, polarization, and sucrose content increase. At the beginning of January to mid-February, due to low temperature and insufficient light, it is not conducive to accumulation of nutrients. However, there is the so-called “sugar back” phenomenon and reducing sugar rises gradually in March, leading to deterioration of the quality of sugarcane juice. The results show that timely harvest of sugarcane is beneficial for sugar making. The regression analysis results show that some of quality indexes have strong correlation between them and the regression models are extremely significant, indicating that the prediction results are ideal.

PREMORTEM STRESS AND POSTMORTEM BIOCHEMICAL CHANGES IN SKIPJACK TUNA AND THEIR RELATION TO QUALITY OF THE CANNED PRODUCT

1970 ◽  
Vol 35 (6) ◽  
pp. 849-851 ◽  
Author(s):  
LADELL CRAWFORD ◽  
ENID J. IRWIN ◽  
JOHN SPINELLI ◽  
W. D. BROWN
Keyword(s):  
Biochemical Changes ◽  
Skipjack Tuna

scholarly journals Investigation of the Effects of Worm Fertilizer on the Yield and Quality of Tobacco

2021 ◽  
Vol 5 (2) ◽  
pp. 290-295
Author(s):  
Sıdık BAYRAM ◽  
Sıdıka EKREN
Keyword(s):  
Plant Height ◽  
Quality Parameters ◽  
Reducing Sugar ◽  
Family Enterprise ◽  
Yield And Quality ◽  
Research Material ◽  
Great Economic Importance ◽  
Leaf Yield ◽  
Evaluation Stage

Tobacco which still has a great economic importance in the world and Turkey provides extensive employment opportunities from growing to evaluation stage to a certain part of our people and is produced as a family enterprise for centuries in our various regions. The aim of the study was to determine in the effects of worm fertilizer on Aegean type tobacco yield and some quality parameters. The search was carried out in a farmer field in Saruhanli district of Manisa province in 2019. Saribaglar-407 type tobacco was used as a research material. Experimental design was Randomized Complete Parcel Design with three replications. In this research, plant height (cm), number of the leaves (per/plant), cured leaf yield (kg ha-1), tobacco visual quality, leaf priming position (%), total alkaloid (nicotine) (%), total reducing sugar (%) and chlorine (%) were determined. Plant height, number of the leaves, yield, nicotine, total reducing sugar and chlorine contents were found 126.7 cm, 48 per/plant, 141 kg ha-1, 1.02%, 9.08% and 0.48%, respectively. An increase in the middle stalk position of the plant was recorded with the application of fertilizer and the results were obtained among the appropriate values for tobacco of the Aegean region in terms of chemical composition. Keywords: tobacco, worm fertilizer, yield, nicotine.

scholarly journals Understanding the Increased Fruit Content of Soluble Proteins, Sugars, Certain Enzyme Activities, and Certain Polyphenols in Context to Date Fruit Ripening

2019 ◽  
Vol 23 (1) ◽  
pp. 49
Author(s):  
Saad Salman M. Alqarni ◽  
Mohammad D Bazzi
Keyword(s):  
Saudi Arabia ◽  
Sample Preparation ◽  
Fruit Ripening ◽  
Enzyme Activities ◽  
Soluble Proteins ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Date Fruit ◽  
Date Fruits

Introduction: To understand the increased fruit content of soluble proteins, sugars, certain enzymes activities, and certain polyphenols in context to date fruit ripening. Materials and Methods: The study collected four varieties of date fruits from a farm in Riyadh, Saudi Arabia. In it, 10-14-day intervals separated the various stages of maturity. The process of sample preparation and extraction includes the samples of fruits at different stages of maturation. Results and Discussion: The Polyphenols oxidize activity appeared to decline with further maturation of date fruit. There was an increase in the protein content and the reducing sugar in all varieties of dates. The changes in the total sugar and reducing sugar occurred due to the increased enzyme’s activity. Conclusion: The reducing sugar increased in all varieties of the date fruit. The coordination of the enzyme might influence the quality of the ripening of date fruits.

scholarly journals Effect of Silicon through Potassium Silicate on Yield, Nutrient Uptake and Quality of Grand Naine Banana

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Arthi Vijayan ◽  
M. V. Sriramachandrasekharan ◽  
R. Manivannan ◽  
Arumugam Shakila
Keyword(s):  
Nutrient Uptake ◽  
Fruit Quality ◽  
Foliar Spray ◽  
Reducing Sugar ◽  
Potassium Silicate ◽  
Fruit Yield ◽  
Total Sugars ◽  
Soil Application ◽  
Silicon Nutrition

Field experiment was conducted in Farmers holding located at Rajagopalapuram village under Kuttalam taluk, Mayiladuthurai district, Tamilnadu, India belonging to Padugai series (Typic ustifluvent) low in available silicon to elucidate the response of banana in terms of yield, nutrition and quality due to silicon nutrition applied through potassium silicate. The treatment consists of  T1 - NPK (RDF), T2 - NPK + Potassium silicate (FS) - 0.25%, T3- NPK + Potassium silicate (FS) - 0.50%, T4 - NPK + Potassium silicate (FS) - 1.00%, T5­ - NPK + Potassium silicate (FS) - 0.25%, T6 - NPK + Potassium silicate (FS) - 0.50%,  T7­ - NPK + Potassium silicate (FS) - 1.00%,  T8 - NPK + Potassium silicate (SA) - 50 kg ha-1, T9 - NPK + Potassium silicate (SA) - 100 kg ha-1 and T10 - NPK + Potassium silicate (SA) – 150 kg ha-1. From T2 to T4 foliar spray was done at 3rd and 5th month and from T5 to T7, foliar spray was done at 3rd, 5th and 7th month.  The test crop is Banana Var. Grand Naine. The results showed that the highest fruit yield was noticed with 50 kg Si ha-1 (96.0 t ha-1) and it reduced with Si levels.  Among foliar treatments, fruit yield increased with silicon concentrations (0.25 to 1%).  The highest fruit yield was observed with 1% Si applied at 3rd and 5th month (92.7 t ha-1). Foliar spray of 0.25 and 0.5% Si applied thrice increased the fruit yield compared to twice application at same concentration. But fruit yield declined when Si was sprayed at 1% thrice. Soil application of silicon recorded higher nutrient uptake over foliar addition. The nutrient uptake was maximum with 150 kg Si ha-1. With respect to foliar treatments, the highest uptake was noticed with foliar spray of 1% Si applied at 3rd and 5th month. Soil application of 50 kg Si ha-1 recorded the highest fruit quality viz., TSS, total sugars, reducing and non-reducing sugar and leaf protein. The highest fruit quality was noticed with foliar spray of 1% Si applied at 3rd and 5th month.  

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