scholarly journals Size and Carbohydrate Content of Ears of Baby Corn in Relation to Endosperm Type (Su, su, se, sh2)

1993 ◽  
Vol 118 (1) ◽  
pp. 141-144 ◽  
Author(s):  
A. Bar-Zur ◽  
A. Schaffer
Keyword(s):  
Field Experiments ◽  
Sweet Corn ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Water Soluble ◽  
Fresh Weight ◽  
Total Soluble Sugar ◽  
Soluble Polysaccharide ◽  
Low Levels ◽  
Time Of Harvest

Ear size and quality traits of various types of maize (Zea mays L.) (Su, su, se, sh2) used as baby corn were evaluated in field experiments. Ear size increased with time (0 to 6 days) after silking. Optimal stage for harvest was at silking for most cultivars and 6 days after silking for the prolific mini-corn cultivars. Sugar content of baby corn ears of all genotypes consisted primarily of glucose and fructose, with only low levels of sucrose. There was no significant increase in sugar content attributable to the su, se, or sh2 genes compared with Su, thus indicating there is no reason to use sweet corn types instead of the higher-yielding Su types. Total soluble sugar content of the genotypes ranged from ≈20 to 30 mg·g-1 fresh weight. Starch and water-soluble polysaccharide (WSP) concentrations in the Su cultivars, which were higher than those in the other endosperm types studied, decreased slightly from 0 to 6 days after silking. However, WSP concentrations were low and not likely to affect quality. Crispness, determined by organoleptic tests, decreased with time of harvest and differed among genotypes.

Effect of Multiple Gas Media Package on Preservation of Fresh Sweet Corn at Room Temperature

2013 ◽  
Vol 477-478 ◽  
pp. 1354-1358
Author(s):  
Jian Qing Meng ◽  
Xiao Yu Jia ◽  
Wei Qiao Yang ◽  
Xi Hong Li
Keyword(s):  
High Temperature ◽  
Water Content ◽  
Room Temperature ◽  
Sweet Corn ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Water Soluble ◽  
Plate Count ◽  
Aerobic Plate Count

Effects of different methods of gas package on freshness of harvested fresh Sweet Corn, at room temperature in its shelf life were investigated. The harvested fresh Sweet Corn were packaged under vacuum, air, N2 or CO2, respectively, and then stored 90 days at 30°Cafter the high temperature sterilization. After the sterilization and during storage, the changes of aerobic plate count, water content, soluble sugar content, and TPA were determined. The results showed that compared with others, the package with N2 could inhibit the growth of microorganisms, kept the content of water, soluble sugar and fat. After 90 days, TPA showed that the package in nitrogen could improve the quality of sweet corns.

Water-soluble polysaccharide determination as a technique for evaluation of sweet corn maturity

1978 ◽  
Vol 29 (3) ◽  
pp. 517 ◽  
Author(s):  
B Darbyshire ◽  
WA Muirhead ◽  
RJ Henry
Keyword(s):  
Moisture Content ◽  
Sweet Corn ◽  
Soluble Sugar ◽  
Accurate Determination ◽  
Water Soluble ◽  
Quality Estimation ◽  
Rapid Technique ◽  
Structural Carbohydrate ◽  
Soluble Polysaccharide

A relationship between the non-structural carbohydrate content and the maturity of sweet corn for processing has been established. It is demonstrated that over the period when sweet corn is suitable for harvesting, while moisture content decreases, water-soluble polysaccharide (wsp) levels increase rapidly but soluble sugar concentrations decline only slightly. These results suggest that decreasing sweetness as the sweet corn matures is due to increasing WSP levels masking the sweetness contributed by relatively constant sugar concentrations. The rapid increase in wsp makes measurement of WSP content a sensitive indicator of small changes in maturity. Because of this sensitivity and the important influence of WSP on sweet corn quality, estimation of wsp provides a rapid technique for the accurate determination of sweet corn maturity.

scholarly journals Characterization and Prebiotic Potential of Longan Juice Obtained by Enzymatic Conversion of Constituent Sucrose into Fructo-Oligosaccharides

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2596 ◽  
Author(s):  
Yongxia Cheng ◽  
Haibo Lan ◽  
Lei Zhao ◽  
Kai Wang ◽  
Zhuoyan Hu
Keyword(s):  
Soluble Sugar ◽  
Monosaccharide Composition ◽  
Water Soluble ◽  
Lactobacillus Delbrueckii ◽  
Soluble Solids ◽  
Enzyme Treatment ◽  
Bacteria Growth ◽  
Before And After ◽  
Soluble Polysaccharide

The prebiotic potential of longan juice obtained by a commercial Viscozyme L for conversion of constituent sucrose to fructo-oligosaccharide was investigated. The physicochemical properties and carbohydrate composition of the longan juice was evaluated before and after enzymatic treatment. The stimulation effects of the treated longan juice on probiotic bacteria growth were also studied in vitro. The results showed that total soluble solids, yield and clarity of longan juice were all significantly improved after enzyme treatment. The water-soluble polysaccharide content, including pectin, was significantly increased. Compared with the natural longan pulp, the enzyme treated juice showed a significant decrease in sucrose content. Substantial fructo-oligosaccharides including 1-kestose and nystose were synthesized after enzyme treatment. The molecular weight distribution and the monosaccharide composition of the water-soluble polysaccharide were significantly changed by enzyme treatment. The treated longan juice and its ethanol-soluble sugar fraction promoted the growth of Streptococus thermophiles, Lactobacillus acidophilus and Lactobacillus delbrueckii, showing a good potential of the treated longan juice for producing functional foods and nutraceuticals.

scholarly journals Bioactive Compounds and Total Sugar Contents of Different Open-Pollinated Beetroot Genotypes Grown Organically

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4884
Author(s):  
Khadijeh Yasaminshirazi ◽  
Jens Hartung ◽  
Michael Fleck ◽  
Simone Graeff-Hoenninger
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Dry Matter ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Organic Production ◽  
Nitrate Content ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Total Soluble Sugar

The growing interest of consumers in healthy organic products has increased the attention to the organic production of beetroot. In this regard, six field experiments were conducted in 2017 and 2018 in three different locations under the specific conditions of organic agriculture, and fifteen beetroot genotypes, including one F1 hybrid as a commercial control and one breeding line, were compared regarding the content of the total dry matter, total soluble sugar, nitrate, betalain, and total phenolic compounds in order to investigate the genetic potential of new and existing open-pollinated genotypes of beetroot regarding the content of their bioactive compounds. The results of this study indicated a significant impact of genotype (p < 0.05) on all measured compounds. Furthermore, results revealed a significant influence of the interactions of location × year (p < 0.05) on the beetroot composition, and, thus, the role of environmental conditions for the formation of tested compounds. The total dry matter content (TDMC) of beetroots varied between 14.12% and 17.50%. The genotype ‘Nochowski’, which possessed the highest total soluble sugar content with 14.67 °Bx (Brix), was among the genotypes with the lowest nitrate content. On the contrary, the cylindrical-shaped genotype ‘Carillon RZ’ (Rijk Zwaan), indicated the lowest sugar content and the highest nitrate concentration. The amount of total phenolic compounds ranged between 352.46 ± 28.24 mg GAE 100 g−1 DW (milligrams of gallic acid equivalents per 100 g of dry weight) and 489.06 ± 28.24 mg GAE 100 g−1 DW for the red-colored genotypes which is correlated with the high antioxidant capacity of the investigated genotypes. Due to the specifics of the required content of bioactive compounds for various products, the selection of suitable genotypes should be aligned with the intended final utilization.

scholarly journals Studies on the Sugar Accumulation and Carbohydrate Splitting Enzyme Levels in Post Harvested and Cold Stored Potatoes

1970 ◽  
Vol 16 ◽  
pp. 95-99 ◽  
Author(s):  
Md Rezaul Karim ◽  
MMH Khan ◽  
Md Salim Uddin ◽  
NK Sana ◽  
F Nikkon ◽  
...  
Keyword(s):  
Key Words ◽  
Cold Storage ◽  
Enzyme Activities ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Reducing Sugar ◽  
Sugar Accumulation ◽  
Potato Varieties ◽  
Total Soluble Sugar

Significant differences were found in sugar content and carbohydrate splitting enzyme activities in tubers of ten indigenous potato varieties at harvesting and after keeping at cold storage. The activities of invertase, amylase, β-galactosidase and cellulase in all varieties were found to be increased by 2-12, 1.2-4, 1.9-4.5, and 1.1-3.7 folds, respectively from harvesting to cold stored potatoes. The amount of starch and sucrose were found to be decreased by 1.15-2.8 and 1.02-1.4 folds, respectively from harvesting to cold stored in all varieties. Total soluble sugar and reducing sugar contents in potatoes were increased by 1.02-1.4 and 4-11 folds, respectively from harvesting to cold stored in all varieties of potatoes. The amount of reducing sugar increased in cold stored potatoes due to the increased activities of carbohydrate splitting enzymes. Key words: Potatoes, Indigenous, Carbohydrate splitting enzymes, Sugars. DOI:10.3329/jbs.v16i0.3748 J. bio-sci. 16: 95-99, 2008

scholarly journals Protective activity of the fungal polysaccharides against fusariosis

2017 ◽  
Vol 38 (SI 2 - 6th Conf EFPP 2002) ◽  
pp. 617-619 ◽  
Author(s):  
A. Šrobárová ◽  
G. Kogan ◽  
L. Tamas ◽  
E. Machová
Keyword(s):  
Cell Wall ◽  
Antifungal Activity ◽  
Defense Mechanisms ◽  
Field Experiments ◽  
Plant Protection ◽  
Water Soluble ◽  
Protective Activity ◽  
Fresh Weight ◽  
Fungal Polysaccharides ◽  
Chitin And Chitosan

Most of the experiments carried out in the area of plant protection have used chitin and chitosan obtained from the crustacean chitin which production is rather expensive. In our study we have applied the chitin-glucan complex prepared from the waste mycelia of filamentous fungi, from baker’s yeast. Five different polysaccharides have been used for the preparation of water-soluble compounds and the assay of their antifungal activity against plant pathogen Fusarium oxysporum. In the field experiments, application of the polysaccharides led to the diminished infestation as well as to significantly increased productivity of fresh weight of the plants (tomato). The results demonstrated that application of the polysaccharides led to increased production of cell wall and some outher and intermembrane-bound proteins. Although the nature of the observed proteins has not been yet established, it can be speculated that they represent some enzymes involved in the antiinfective defense mechanisms in plants.

scholarly journals Biochemical and phytochemical evaluation of Stevia rebaudiana

2016 ◽  
Vol 2 (1) ◽  
pp. 121-130 ◽  
Author(s):  
Md Moniruzzaman Sohag Howlader ◽  
Sheikh Rashel Ahmed ◽  
Khadizatul Kubra ◽  
Md Khairul Hassan Bhuiyan
Keyword(s):  
Phenolic Compounds ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Stevia Rebaudiana ◽  
Reducing Sugar ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Dry Extract ◽  
Total Soluble Sugar

The present study was aimed to evaluate biochemical and phytotochemical of dry leaves of Stevia rebaudiana. Biochemical analysis indicated that Stevia leaves are a good source of carbohydrate and reducing sugar. Different extraction methods were used to prepare four different dry extracts (Extract A, B, C, D). Total soluble sugars and reducing sugars were analyzed for these four dry extracts and commercial Stevia powder. The highest amount of total soluble sugar (477 mg sugar g-1 dry extract) was obtained from extract C and higher amount of reducing sugar (82 mg g-1 dry extract) was obtained from extract D among the extracts. But commercial Stevia powder showed higher total soluble sugar content (754 mg g-1 dry powder) and highest amount of reducing sugar (98 mg g-1 dry extract) than all the extracted dry samples. The extraction process of dry extract C was feasible for the extraction of total soluble sugar. For the phytochemical screening, crude extract was tested for the presence of different chemical groups and presence of alkaloids, phenolic compounds, steroids, tannins, flavonoids, cardiac glycosides and saponins that were identified. The highest amount of total phenolic compounds (92 mg) was recorded from methanolic extract of extraction B. The lowest amount of total phenolic compounds (36 mg) was recorded in ethanolic extract of extraction A. So, Methanol proved as best solvent to extract increased quantity of total phenolic compounds than other solvents.Asian J. Med. Biol. Res. March 2016, 2(1): 121-130

scholarly journals Effect of N, P, K, and Mg application on yield and fruit Quality of mandarin (Citrus reticulata)

2013 ◽  
Vol 38 (3) ◽  
pp. 425-433
Author(s):  
Shamima Nasreen ◽  
R Ahmed ◽  
MA Ullah ◽  
MA Hoque
Keyword(s):  
Fruit Quality ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Fruit Yield ◽  
Gross Margin ◽  
Marginal Rate ◽  
Piedmont Plain ◽  
Yield Attributes ◽  
Total Soluble Sugar

The study was carried out at the farmer's field of Juri Upazilla, Maulavibazar District during 2008-2009, 2009-2010, and 2011-2012 to find out the proper combination of fertilizer nutrients that promotes better fruit yield and quality of mandarin (cv. Khashi Kamla). The treatments were Native nutrient i.e., control (TI), N150P50K150Mg30 (T2), N200P75K175Mg40 (T3), N250P100 K200Mg50 (T4), N300P125K225Mg60 (T5), and N200P75K175Mg0 (T6) g/plant/year. In addition, 20 kg cowdung/plant was used as blanket dose. Yield components, yield, and TSS content (%) of mandarin varied significantly due to variation of nutrients in all the test years. Fruit yield/plant was improved significantly with increase in NPK and Mg dose irrespective of years. Application of Mg in combination with NPK increased 17-157% mean fruit yield over magnesium control. Significantly the highest yield and yield attributes were recorded under treatment N300 P125 K225 Mg60 g/plant (T5) along with 20 kg cowdung/plant in all the years. Total soluble sugar (%) content was also maximum in trees receiving N300P125K225Mg30 g/plant. The highest gross margin and marginal rate of return were achieved by the same treatment (T5). The lowest fruit yield/plant was obtained from untreated control plot (native nutrient). Three years’ study revealed that application of N300P125K225Mg60 along with 20 kg cowdung/plant would be economically optimum for achieving higher yield and better fruit quality in mandarin grown under piedmont plain soil. DOI: http://dx.doi.org/10.3329/bjar.v38i3.16969 Bangladesh J. Agril. Res. 38(3): 425-433, September 2013

The high fruit soluble sugar content in wild Lycopersicon species and their hybrids with cultivars depends on sucrose import during ripening rather than on sucrose metabolism

2006 ◽  
Vol 33 (3) ◽  
pp. 279 ◽  
Author(s):  
María E. Balibrea ◽  
Cristina Martínez-Andújar ◽  
Jesús Cuartero ◽  
María C. Bolarín ◽  
Francisco Pérez-Alfocea
Keyword(s):  
Wild Species ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Sucrose Metabolism ◽  
F1 Hybrids ◽  
Metabolic Parameter ◽  
Wild Relative ◽  
Soluble Sugar Content ◽  
Total Soluble Sugar ◽  
In The Wild

Soluble sugar content has been studied in relation to sucrose metabolism in the hexose-accumulating cultivated tomato Lycopersicon esculentum Mill, the wild relative species Lycopersicon cheesmanii Riley, in the sucrose-accumulating wild relative species Lycopersicon chmielewskii Rick, Kesicky, Fobes & Holle. and in two hexose-accumulating interspecific F1 hybrids (L. esculentum × L. cheesmanii; L. esculentum × L. chmielewskii), cultivated under two irrigation regimes (control: EC = 2.1 and saline: EC = 8.4 dS m–1). Under control conditions the total soluble sugar content (as hexose equivalents) in the ripe fruits of L. cheesmanii was 3-fold higher than in L. esculentum, while L. chmielewskii and both F1 hybrids contained twice as much as the cultivar. With the exception of L. esculentum × L. cheesmanii, salinity increased the sugar content by 1.3 (wild species) and 1.7 times (cultivar and L. esculentum × L. chmielewskii) with respect to control fruits. Wild germplasm or salinity provided two different mechanisms for the increases in fruit sugar content. The hexoses accumulated in ripe fruits were strongly influenced by those accumulated at the start of ripening, but the hydrolysed starch before start of ripening only partially explained the final hexose levels and especially the increase under salinity. The early cell wall acid invertase and the late neutral invertase activities appeared to be related to the amount of hexoses accumulated in ripe fruits. However, no metabolic parameter was positively related to the amount of sugar accumulated (including sucrose). The major differences between genotypes appeared in ripe fruits, in which up to 50% of the total amount of sugars accumulated in the wild species (mainly in L. cheesmanii) and hybrids cannot be explained by the sugars accumulated and the starch hydrolysed before the start of ripening stage. As a consequence, the higher fruit quality of the wild species compared with L. esculentum may depend more on the continuation of sucrose import during ripening than on osmotic or metabolic particularities such as the hexose / sucrose-accumulator character or specific enzyme activities.

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