Influence of Silicon Spray on Storability of Truss Tomato in MA Storage

( M. Z. Islam ),( M. A. Mele ),( M. J. Jeong ),( I. S. Kim ),( S. K. Hong ),( I. L. Choi ),( J. P. Baek ),( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2014 강원 농업생명환경연구 Vol.26 No.3

This study was conducted to find out the performance of silicon foliar spray treatment on storability of truss tomatoes (Lycopersicon esculentum Mill. cv. Campari and Temptation) in MA (20,000 cc/m2 · day· atm O2 permeability film) storage. Tomatoes were grown by hydroponics at Gangwon province in Korea during the winter, harvested at light red maturity stage and packaged with MA condition for stored at 8℃ and to investigate the storability. The silicon sprayed as a whole plant that displayed the utmost visual quality had the oxygen 5.94-12.28%, carbon dioxide 6.72-7.94% and ethylene concentration around 0.43-1.67 μL/L of ‘Campari’ and the oxygen 3.82-10.84%, carbon dioxide 7.40-10.20% and ethylene concentration around 0.69-1.75 μL/L of ‘Temptation’. The range of fresh weight loss of ‘Campari’ was less than 0.22% and ‘Temptation’ was less than 0.20% during the storage period at 8℃. The higher visual quality maintained by silicon sprayed as a whole plant than other treatments of both cultivars on the MA storage period at 8℃. The silicon sprayed as a whole plant had a positive effect to reduce the fungal incidence of both cultivars during the MA storage period at 8℃. Moreover, the silicon sprayed as a whole plant showed more prominent firmness than other treatments for storage days of both cultivars. Therefore, the silicon foliar sprays as whole plant has the positive effect to advance storability, reduced fungal incidence, maintained vitamin C, soluble solids and retain firmness.

Ultraviolet Light (UV-C) Irradiation Reduced Postharvest Fungal Incidence of Cherry Tomato

( M. Z. Islam ),( M. A. Mele ),( I. S. Kim ),( S. K. Hong ),( J. P. Baek ),( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2015 강원 농업생명환경연구 Vol.27 No.2

This study was conducted to reduce the postharvest fungal incidence of cherry tomato (Lycopersicon esculentum Mill. cv. Unicorn) by ultraviolet light (UV-C) irradiation in MA storage. Hydroponic grown red maturity stage of cherry tomatoes was collected from Gangwon province. Tomato fruits were inoculated with Botrytis cinerea (grey mould). Afterwards, ultraviolet irradiation (254 nm, UV-C) of 7, 14, 21 and 28 kJ/m2 treated to tomato fruits. And treated UV-C tomatoes were packed with MA condition (20,000 cc/m2.day.atm O2 permeability film) to store at 5˚C for 20 days with 85% relative humidity. The 28 kJ treatment which showed the best visual quality maintained around 3.30-6.60% of carbon dioxide concentration and 16.08-17.50% oxygen and 0.26-1.11 μL/L ethylene during the storage. As storage periods progressed, the fresh weight loss was increased but did not exceed the maximum permissible of fresh weight loss. The 28 kJ performed the highest firmness among the treatments. The UV-C treatments demonstrated the less fungal incidence than control. The 28 kJ treatments exhibited the best visual quality, firmness, titratable acidity and less fungal incidence among the treatments. So, ultraviolet (UV-C) irradiation reduced postharvest fungal incidence of cherry tomato.

Rumen pH and Ammonia Nitrogen of Cattle Fed Different Levels of Oil Palm (Elaeis guineensis) Frond Based Diet and Dry Matter Degradation of Fractions of Oil Palm Frond

Islam, M.,Dahlan, I.,Rajion, M.A.,Jelan, Z.A. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.7

Three fistulated Malaysian local bulls were used in a $3{\times}3$ Latin square design to determine the effects of different levels of concentrate with oil palm (Elaeis guineensis Jacq.) frond (OPF) on rumen pH and $NH_3$-N concentration, and DM degradability of different fractions of OPF. Three diets namely, 60% OPF pellet and 40% concentrate (Diet 1), 50% OPF pellet and 50% concentrate (Diet 2) and 40% OPF pellets and 60% concentrate (Diet 3) were used. The levels of concentrate in the diets affected rumen pH and $NH_3$-N concentration. The pH and $NH_3$-N concentration almost in all hourly samples did not show any difference (p>0.05) among the diets except the 6 h and 9 h samples. The highest (p<0.01) $NH_3$-N concentration was obtained on Diet 3 followed by Diet 2 and Diet 1, but there was a slightly higher (p>0.05) pH on Diet 1. The $NH_3$-N concentrations of rumen liquor at 9 h sampling on Diet 1 and Diet 2 were below the critical level (50 mg/liter) required for efficient fermentation of fibrous feeds. The in sacco DM degradation of different fractions of OPF was affected by diets. The DM degradation of fractions of OPF was higher on Diet 3, which showed differences (p<0.01) with the other diets. It was found that a higher level of concentrate (60%) with OPF gave a higher rumen $NH_3$-N concentration that increased the DM degradation of OPF fractions. The results showed that OPF could support an efficient rumen function in terms of $NH_3$-N concentration and pH when ${\leq}50%$ in the diet. A higher level of OPF (>50%) does not support an efficient rumen fermentation in terms of $NH_3$-N concentration, and resulted in lower DM degradation values of the fractions. The results suggested that there is a need to supplement additional nitrogen to OPF based diets.

Development and performance characteristics of silane crosslinked poly(vinyl alcohol)/chitosan membranes for reverse osmosis

M. Shafiq,A. Sabir,A. Islam,S.M. Khan,S.N. Hussain,M.T.Z. Z. Butt,T. Jamil 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.48 No.-

Novel thinfilm poly(vinyl alcohol)/chitosan (PVA/CS) based reverse osmosis membranes infused withsilane crosslinked tetraethylorthosilicate (TEOS) were prepared by dissolution casting methodology. Theperformance characteristics and the scope of the reverse osmosis membranes were explicated by Fouriertransform infrared spectroscopy (FTIR), thermogravimetric analyzer (TGA), differential scanningcalorimetery (DSC), scanning electron microscopy (SEM), contact angle, X-ray diffraction (XRD) andreverse osmosis (RO) permeation tests which determined the functional groups and network of covalentcrosslinks, thermal properties, morphology, hydrophilicity, structural investigation and RO properties,respectively. It was found that the membrane surface became smoother, more hydrophilic, withimproved thermal stability, increased salt rejection and good permeationflux after the appropriateinfusion of TEOS. The crosslinked membranes showed more hydrophilicity compared to theuncrosslinked PVCS membrane. The SEM micrographs of membranes revealed dense structure withno mottled surfaces. PVCS-4 showed an optimalflux of 1.84 L/m2h and 80% salt rejection that confirmedthe selective interaction of TEOS molecules with PVA/CS polymer backbone compared to the pristine(PVCS) membrane. The antibacterial properties of the membranes showed the inhibition of the growth ofEscherichia coli successfully.

An Experimental Investigation of CHF in an Open Concentric-Tube Thermosyphon

M. A. Islam,M. Monde,M. Z.Hasan,Y. Mitsutake 대한기계학회 1998 Heat transter conference Vol.2 No.1

PREVALENCE OF PARASITES OF WATER BUFFALOES IN BANGLADESH

Islam, F.M.S.,Rahman, M.H.,Chowdhury, S.M.Z.H. Asian Australasian Association of Animal Productio 1992 Animal Bioscience Vol.5 No.4

A total of 480 live buffaloes and 180 visceral samples from Dhaka, Mymensingh, Bogura and Rajshahi were examined for the presence of parasites of water buffaloes in Bangladesh during September, 1988 to August, 1989. The recorded parasites were eight trematodes, two cestodes, fourteen nematodes, two protozoa and two arthropods. The trematodes were Fasciola gigantica (18.9%-46.4%). Paramphistomes (Gigantocotyl explanatum, Ceylonocotyl scoliocoelium, Cotylophoron cotylophorum and Gastrothylax crumenifer (29.5%-48.3%). Schistosoma indicum (1.6%-31.6%), S. spindale (13.9%-27.7%) and S. nasalis (4.6%-8.3%). The cestodes were Hydatid cyst (24.4%), Cysticercus tenuicollis (11.1%). The nematodes were Strongyloides papillosus (14.8%-21.6%), Capillaria spp. (C. bilobata, C. bovis) (8.5%-20.0%), Setaria digitata (7.2%), Onchocerca armillata (27.2%), Thelazia rhodesii (2.3%), Gongylonema pulchrum (3.9%), Oesophagostomum radiatum (6.6%-41.6%), Hookworms (Agriostomum vryburgi, Bunostomum phlebotomum) (8.1%-17.2%), Trichostrongylus axei (11.2%-21.6%), Mecistocirrus digitatus & Haemonchus contortus (15.2%-25.5%) and Toxocara vitulorum (1.1%-9.8%). The protozoa were Eimeria zuerni (2.3%) and Trypanosoma theileri (0.4%). The arthropods were Haemaphysalis bispinosa (8.1%) and Haematopinus tuberculatus (34.6%).

Productivity and Nutritive Values of Different Fractions of Oil Palm (Elaeis guineensis) Frond

Islam, M.,Dahlan, I.,Rajion, M.A.,Jelan, Z.A. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.8

Productivity, nutrient contents, in vitro gas production and in sacco degradability of different fractions and whole OPF were determined to assess the feeding value of OPF as a ruminant feed. An in vivo digestibility trial was also carried out using goat. Freshly harvested OPF was randomly collected, partitioned and weighed. An OPF from 21 years older palm weighed 13.4 kg and the annual fresh matter yield of petiole, leaflet and midrib was 46.5, 11.8 and 3.4 ton/ha, respectively. Leaflet contained 439, 926, 698, 501, 168, 196, 748 and 52 (g/kg) of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF), acid detergent fiber (ADF), cellulose (CE), hemicellulose (HC), total carbohydrate (TC) and non fiber carbohydrate (NFC), respectively. Petiole contained lower (p<0.01) DM, CP and EE contents than leaflet. Organic matter, CE and TC contents were higher (p<0.01) in petiole compared to leaflet. Silica and lignin contents were highest (p<0.01) in midrib followed by leaflet, whole OPF and least in petiole. The Ca, P, Na, K and Mg contents (g/100 g DM) of leaflet were 0.529, 0.182, 0.039, 0.876, and 0.168, respectively. In vitro DM digestibility (g/100 g) at 48 h of leaflet, petiole and midrib was 32.7, 38.7 and 30.2, respectively. The in sacco DM degradation (g/100 g) at 48 h of leaflet was higher than that of whole OPF, petiole and midrib. The in vivo digestibility of DM, OM, CP and ADF of whole OPF was 52, 56, 43 and 26%, respectively. It can be concluded that leaflet is the most nutritious fraction of OPF and midrib is the least. The nutrient content and digestibility of the whole OPF showed that OPF could be an alternative roughage source for ruminant diets.

Characterization of nine Mlo family genes and analysis of their expression against pathogen infections in Vitis flexuosa

Islam, M. Z.,Yun, H. Springer Netherlands 2016 Euphytica Vol.211 No.3

<P>Mildew resistance locus o (Mlo) is a specific seven-transmembrane gene family that confers resistance against several abiotic and biotic stresses in plants. In this study, we identified nine Mlo-like loci,VfMlo-like3243 (Vitis flexuosa powdery-mildew resistance locus o-like3243), VfMlo-like4098, VfMlo-like5057, VfMlo-like6833, VfMlo-like7881, VfMlo-like8120, VfMlo-like14439, VfMlo-like14557, and VfMlo-like18484, which showed differential expression upon transcriptome analysis conducted using next generation sequencing (NGS) of V. flexuosa infected with Elsinoe ampelina. These genes are 1773-2548 bp long and encode deduced full-length proteins of 482-587 amino acids. The predicted amino acid sequences of all genes show typical Mlo domains containing seven highly conserved transmembrane domains, a calmodulin-binding domain and 30 important amino acid residues for Mlo function. While 3 VfMlo-like genes were downregulated, 5 VfMlo-like genes were up-regulated in grapevines infected with Erysiphe necator, among which four (VfMlo-like6833, VfMlo-like8120, VfMlo-like14439 and VfMlo-like18484) are orthologous to the AtMlo2, AtMlo6 and AtMlo12 genes involved in powdery mildew susceptibility. All genes except VfMlo-like17881 showed upregulated expression at 48 hpi after infection of Rhizobium vitis. The results revealed that the tested genes are related in responses to pathogens of grapevines and can be utilized as useful resources for investigating their roles in disease resistant responses in grapevines.</P>

Accumulation of stilbene compounds and induction of related gene expression by hairy vetch and ryegrass extracts in grape berries

Islam, M. T.,Ahn, S. Y.,Islam, M. Z.,Kim, S. A.,Yun, H. K. Springer Science + Business Media 2014 BIOLOGIA -BRATISLAVA- Vol.69 No.12

Effect of 1-Methylcyclopropene on Quality and Storability of Cherry Tomato during Commercial Handling Condition

M Z Islam,Y S Kim,H M Kang 강원대학교 농업생명과학연구원 2012 강원 농업생명환경연구 Vol.24 No.3