scholarly journals The Effect of Low-dose X-ray Irradiation on the Quality of Fresh-cut Asparagus in Microwaveable Vacuum Skin Packs

HortScience ◽  
2011 ◽  
Vol 46 (1) ◽  
pp. 64-69 ◽  
Author(s):  
Joongmin Shin ◽  
Bruce Harte ◽  
Janice Harte ◽  
Kirk Dolan
Keyword(s):  
Low Dose ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Water Soluble ◽  
Asparagus Officinalis ◽  
Local Source ◽  
X Ray ◽  
Pal Activity ◽  
Irradiation Treatment ◽  
Fresh Cut

Low-dose x-ray irradiation was used on vacuum skin-packaged fresh-cut asparagus to extend its shelf life and improve its microbial safety. Freshly imported Peruvian asparagus (Asparagus officinalis L.) spears were obtained from a local source, cleaned, trimmed, and sanitized and then vacuum skin-packaged (VSP) in a tray pack system. A breathable lid film was vacuum-sealed to protect the product from contamination and allow for gas exchange. Asparagus were packaged in VSP, which modified the package atmosphere, and exposed to a target dose of 1.0 kGy or left untreated. Asparagus were also placed in low-density polyethylene (LDPE) bags as a control. All samples were then stored at 4 °C for 24 days. To determine the effectiveness of the irradiation treatment, sample packages were periodically removed from storage and several measurements were used to evaluate the product, including headspace gas content, microbial growth, water soluble sugar content, and enzyme activity. A dose of 1.0 kGy reduced initial microbial population up to 3.8 log colony-forming units (cfu)/g and maintained 20% more of the initial sugar content relative to the non-irradiated VSP asparagus. Phenylalanine ammonia-lyase (PAL) activity in VSP asparagus was lower than in the control package (LDPE bag) regardless of irradiation treatment (P < 0.05). However, x-ray treatment increased the PAL activity of asparagus in VSP up to Day 8 (P < 0.05).

scholarly journals Treatment of Cancer and Inflammation With Low-Dose Ionizing Radiation

Dose-Response ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 155932581769753 ◽  
Author(s):  
Shuji Kojima ◽  
Mitsutoshi Tsukimoto ◽  
Noriko Shimura ◽  
Hironobu Koga ◽  
Akishisa Murata ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Ulcerative Colitis ◽  
Bone Metastasis ◽  
Low Dose ◽  
Case Reports ◽  
Low Dose Radiation ◽  
X Ray ◽  
Radiation Hormesis ◽  
Irradiation Treatment ◽  
Dose Radiation

There is considerable evidence from experimental studies in animals, as well as from clinical reports, that low-dose radiation hormesis is effective for the treatment of cancer and ulcerative colitis. In this study, we present 3 case reports that support the clinical efficacy of low-dose radiation hormesis in patients with these diseases. First, a patient with prostate cancer who had undergone surgical resection showed a subsequent increase in prostate-specific antigen (PSA). His PSA value started decreasing immediately after the start of repeated low-dose X-ray irradiation treatment and remained low thereafter. Second, a patient with prostate cancer with bone metastasis was treated with repeated low-dose X-ray irradiation. His PSA level decreased to nearly normal within 3 months after starting the treatment and remained at the low level after the end of hormesis treatment. His bone metastasis almost completely disappeared. Third, a patient with ulcerative colitis showed a slow initial response to repeated low-dose irradiation treatment using various modalities, including drinking radon-containing water, but within 8 months, his swelling and bleeding had completely disappeared. After 1 year, the number of bowel movements had become normal. Interest in the use of radiation hormesis in clinical practice is increasing, and we hope that these case reports will encourage further clinical investigations.

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.

Application of Collagen Hydrolysate Extracted from Limed Hide Waste in the Crop Grow Seedlings

2021 ◽  
Vol 43 (5) ◽  
pp. 546-546
Author(s):  
Li Zhao Li Zhao ◽  
Yanru Long and Haibin Gu Yanru Long and Haibin Gu
Keyword(s):  
Chlorophyll Content ◽  
Inorganic Nitrogen ◽  
Germination Rate ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Water Soluble ◽  
Plant Weight ◽  
Molecular Weights ◽  
Collagen Hydrolysates ◽  
Nutrient Solutions

In this work, the collagen hydrolysates with different molecular weights were successfully extracted from the limed hide waste, and used at the nutrient solutions for crop breeding. Firstly, using the single factor and orthogonal exp eriments, hydrolytic process parameters of limed hide waste were optimized for the Alcalase-based enzymatic and Ca(OH)2-based alkali, and alkali-enzyme methods that led to the corresponding collagen hydrolysates with different molecular weights. The obtained collagen hydrolysates were characterized by gel permeation chromatography (GPC), amino acid analysis, the inductively coupled plasma optical emission spectrometer (ICP-OES), and Kjeldahl method. Then, the collagen hydrolysates were used as organic nitrogen sources to prepare fertilizers for the grow seedlings of Triticum aestivum, Glycine max, and Brassica napus, and inorganic nitrogen solutions were used as controls. The effects of these nutrient solutions on the seedlings and growth of the three crops were investigated. Concretely, the germination rate, plant weight, seeding height, soluble sugar content, and chlorophyll content were tested. Results indicated that all the collagen hydrolysate products could be used to prepare water-soluble fertilizers that can intensively boost germination, plant weight, and seeding height, and greatly increase soluble sugar and chlorophyll content in leaves. Furthermore, the fertilizer efficiencies of all the tested degradation products are much better than that of the water-soluble fertilizer containing inorganic nitrogen. All the proteolytic nutrient solutions with different molecular weights can promote the growth of crops, but the smaller the molecular weight is, the better the growth effect of crops is, which is manifested in the higher germination rate, plant weight, seedling height, soluble sugar content and chlorophyll content of seeds.

scholarly journals Inhibitory Effects of Oyster Shell on the Spathe “Greenback” of Anthurium andraeanum Lind.

2019 ◽  
Vol 131 ◽  
pp. 01108
Author(s):  
Chun-hua Xia ◽  
Yi-wei Chen ◽  
Jian-hua Chen
Keyword(s):  
Sugar Content ◽  
Soluble Sugar ◽  
Oyster Shell ◽  
Anthocyanin Content ◽  
Light Conditions ◽  
Low Light ◽  
Pal Activity ◽  
Cultivation Technique ◽  
Anthurium Andraeanum ◽  
Shell Fragments

Anthurium andraeanum Lind. is an important tropical flower. However, the spathe of A. andraeanum develops a ”greenback” under low-light conditions. This study aimed to evaluate the use of oyster shell supplementation as a cultivation technique for inhibiting the spathe “greenback” of A. andraeanum under low-light conditions. Appropriate calcium from micro-dissolution of oyster shell can improve the activity of phenylalanine ammonia lyase (PAL) which is positively correlated with the anthocyanin content. Using regression models and response surface methodology (RSM), the relationships between oyster shell fragments and the anthocyanin content were determined. The results showed that the solubility of oyster shells increased with the increase in fragment weight, C, and time, T at pH 5.9. In oyster shell substrate, cultivation of A. andraeanum under low-light conditions (less than 220 μmol·m−2·s−1) at pH 5.9, regression analysis showed that the PAL activity in pedicels of A. andraeanum first increased and then decreased with the increase in oyster shell fragment weight C, and the 286 mg oyster shell fragments greatly increased the PAL activity of A. andraeanum pedicels within 8 weeks (w). The 286 mg oyster shell fragments significantly increased the anthocyanin content in A. andraeanum spathes under weak-light conditions within 8 h, and the soluble sugar content reached the maximum value at 15 weeks as well, together with the pedicel diameter, soluble sugar and water content, thus inhibiting the spathe “greenback” of A. andraeanum.

Phylogenetic Relationships of Sucrose Transporters (SUTs) in Plants and Genome-wide Characterization of SUT Genes in Orchidaceae

2020 ◽  
Author(s):  
Yunzhu Wang ◽  
Yue Chen ◽  
Qingzhen Wei ◽  
Hongjian Wan ◽  
Chongbo Sun
Keyword(s):  
Plant Species ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Total Content ◽  
Water Soluble ◽  
Long Distance ◽  
Sucrose Transporters ◽  
Specific Subgroup ◽  
Plant Level ◽  
Sucrose Partitioning

Abstract BackgroundSucrose is the primary form of photosynthetically produced carbohydrates transported long distance in many plant species, which significantly affects plant growth, development and physiology. Sucrose transporters (SUTs or SUCs) are a group of membrane proteins that play vital roles in mediating sucrose allocation within cells and at the whole plant level.ResultsIn this study, we investigated the relationship of SUTs in 24 representative plant species and performed a comprehensive analysis of SUT genes in three sequenced Orchidaceae species, Dendrobium officinale, Phalaenopsis equestris, and Apostasia shenzhenica. All the SUTs from 24 plants were classified into three groups and five subgroups: subgroups A, B1, B2.1, B2.2, and C, based on the evolutionary relationships. A total of 22 SUT genes were identified in Orchidaceae species, among which D. officinale had 8 genes (DenSUT01-08), P. equestris had 8 genes (PeqSUT01-08) and A. shenzhenica had 6 genes (PeqSUT01-06). For the 22 Orchidaceae SUTs, each of the subgroups A, B2.2 and C contains three genes, whereas the SUT genes were significantly expanded in the monocot-specific subgroup B2.1 which contained 12 genes. To shed light into sucrose partitioning and functions of sucrose transporters in Orchidacea species, we analysed water-soluble sugar content and performed RNA sequencing of different tissues of D. officinale, including leaves, stems, flowers and roots. The results showed that although total content of water-soluble polysaccharides was highest in the stems of D. officinale, the sucrose content was highest in flowers. Moreover, gene expression analysis showed that most of the DenSUTs were expressed in flowers, among which DenSUT01, DenSUT07 and DenSUT06 had significantly high expression levels.ConclusionsThese results indicated that stems are used as main storage sinks for photosynthetically produced sugar in D. officinale, and that the DenSUTs mainly take functions in the cellular machinery and development of floral organs. Our findings provide valuable information on sucrose partitioning and the evolution and functions of SUT genes in Orchidaceae and other species.

Sugar Content in Spears Versus Asparagus Yielding

2007 ◽  
Vol 67 (1) ◽  
pp. 127-136 ◽  
Author(s):  
Włodzimierz Krzesiński ◽  
Jerzy Stachowiak ◽  
Monika Gąsecka ◽  
Mikołaj Knaflewski
Keyword(s):  
Sugar Content ◽  
Soluble Sugar ◽  
Hplc Method ◽  
Asparagus Officinalis ◽  
Effect Of Temperature ◽  
Glucose Content ◽  
Soluble Sugar Content ◽  
Green Asparagus ◽  
Calculated Amount

Sugar Content in Spears Versus Asparagus YieldingThis research was focused on determination of the correlation between soluble sugar content in green asparagus (Asparagus officinalisL.) spears and yield. In 2000-2002, green spears of the cultivar 'Thielim' were cut every day from the end of April to the middle of June. Sucrose, glucose, and fructose content was determined every 10-14 days by means of an HPLC method. The content of fructose was not correlated but the ratio of fructose to glucose content was positively correlated with the yield (r=0.92). When the ratio of fructose to glucose content in spears increased by 0.13, the yield increased by about 1 t·ha-1. Content of glucose, sucrose and soluble sugar were negatively correlated with yield (r = -0.76 r = -0.77 and -0.79, respectively). When glucose, sucrose and soluble sugar content in spears decreased by 0.29 mg·g-1, 0.20 mg·g-1and 0.85 mg·g-1, respectively, the yield increased by about 1 t·ha-1. During the first twenty days of harvest the calculated amount of soluble sugar accumulated in harvested spears was correlated with the yield in the remaining harvest period as well as in the whole harvest season. The effect of temperature and solar radiation on the yield and sugar content in spears is discussed in the paper.

Effects of Different Light Intensity on the Growth and Nutrients Content of Gynura

2014 ◽  
Vol 955-959 ◽  
pp. 3766-3769 ◽  
Author(s):  
Xiang Rong Cheng ◽  
Jia Liu ◽  
Jun Shu ◽  
Mu Kui Yu
Keyword(s):  
Light Intensity ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Light Condition ◽  
Amino Acid Content ◽  
Canopy Cover ◽  
Water Soluble ◽  
Light Conditions ◽  
Significant Difference ◽  
Number Of Branches

Light condition has significant effects on plant growth and nutrient accumulation. The growth and nutrients content of Gynura (Begonia fimbristipulata) were studied under three light intensities (natural field, 100% full sunlight (L0); 50% canopy cover (L1); 70% canopy cover (L2)) in Fuyang, China. The results showed that plant height, ground diameter and number of branches were no significant difference between L0 and L1 treatments (P>0.05), these variables were significantly lower in L2 treatment than that in L0 treatment (P<0.05). Potassium (K), phosphorus (P), vitamin C (Vc) and soluble sugar content in Gynura’s leaves reduced with decreasing light intensity. The content of protein and iron (Fe) were no significant difference among the three light treatments (P>0.05). The content of calcium (Ca) markedly increased in L1 treatment compared with L0 treatment (P<0.05), and it greatly declined in L2 treatment. The change of light conditions had less impact on the water-soluble amino acid content (except for alanine, serine, and glutamic acid). These results indicate that Gynura is suitable to cultivate under the forest with 50% canopy cover.

Seasonal Development of Established Johnsongrass

Weed Science ◽  
1972 ◽  
Vol 20 (4) ◽  
pp. 392-395 ◽  
Author(s):  
Menashe Horowitz
Keyword(s):  
Climatic Factors ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Soil Layer ◽  
Winter Season ◽  
Early Spring ◽  
Early Summer ◽  
Water Soluble ◽  
Seasonal Development

Growth of tops and rhizomes of established johnsongrass(Sorghum halepense(L.) Pers.) stopped almost completely in the cool winter season. Rhizome growth started in spring later than topgrowth. Rhizomes constituted more than 90% of the total subterranean weight. In a sward of pure johnsongrass, 60%, 30%, and 10% of the total subterranean weight were found in the 0 to 15-cm, 15 to 30-cm, and 30 to 45-cm soil layer, respectively. Water-soluble sugar content in rhizomes was high in early winter and in early summer and low in early spring and in fall. Less water-soluble sugars were found in shallow than in deeper rhizomes. In winter the sugars accumulated mainly in the deepest rhizomes. No clear relation was detected between the sprouting percentage of rhizome buds and growth, sugar content, or seasonal climatic factors. No case of complete sprouting inhibition was recorded during the year.

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