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Accuracy of two optical chlorophyll meters in predicting chemical composition and in vitro ruminal organic matter degradability of Brachiaria hybrid,Megathyrsus maximus, and Paspalum atratum

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Animal Nutrition 2017年第1期3卷 67-76页

作者： Martin P.Hughes Victor Mlambo Cicero H.O.Lallo Nasreldin A.D.Basha Ignatius V.Nsahlai Paul G.A.Jennings department of food Production Faculty of Food and AgricultureUniversity of the West Indies department of Animal science School of Agricultural SciencesFaculty of AgricultureScience and TechnologyNorth-West University Open Tropical Forage-Animal Production Laboratory Department of Food ProductionFaculty of Food and AgricultureUniversity of the West Indies department of Animal & Poultry science School of AgriculturalEarth and Environmental SciencesCollege of AgricultureEngineering and ScienceUniversity of KwaZulu-Natal department of Animal Nutrition Faculty of Animal Production Shampat CampusUniversity of Khartoum MARJEN Consulting Group

The objective of this study was to determine the accuracy and reliability of 2 optical chlorophyll meters:FieldScout CM 1,000 NDVI and Yara N-Tester, in predicting neutral detergent fibre(NDF), acid detergent fibre(ADF), acid detergent lignin(ADL), acid detergent insoluble nitrogen(ADIN) and in vitro ruminal organic matter degradability(IVOMD) of 3 tropical grasses. Optical chlorophyll measurements were taken at 3 stages(4, 8 and 12 weeks) of regrowth in Brachiaria hybrid, and Megathyrsus maximus and at 6 and 12 weeks of regrowth in Paspalum atratum(cv. Ubon). Optical chlorophyll measurements showed the highest correlation(r = 0.57 to 0.85) with NDF concentration. The FieldScout CM 1,000 NDVI was better than the Yara N-Tester in predicting NDF(R^2 = 0.70) and ADF(R^2 = 0.79) concentrations in Brachiaria hybrid and NDF(R^2 = 0.79) in M. maximus. Similarly, FieldScout CM 1,000 NDVI produced better estimates of 24 h IVOMD(IVOMD_(24 h)) in Brachiaria hybrid(R^2 = 0.81) and IVOMD_(48 h) in Brachiaria hybrid(R^2 = 0.65) and M. maximus(R^2 = 0.75). However, these prediction models had relatively low concordance correlation coefficients, i.e., CCC >0.90, but random errors were the main source of bias. It was,therefore, concluded that both optical chlorophyll meters were poor and unreliable predictors of ADIN and ADL concentrations. Overall, the FieldScout CM 1,000 NDVI shows potential to produce useful estimates of IVOMD_(24h) and ADF in Brachiaria hybrid and IVOMD_(48 h) and NDF concentrations in M. maximus.

关键词： Optical chlorophyll measurements Chemical composition Prediction model Tropical grass

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Roles of Fermented Plant-， Dairy- and Meat-Based foods in Aggravating or Alleviating Allergic Responses

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food science and Human Wellness 2022年

作者： Muhamad Hafiz Abd Rahim Nur Hazlin Hazrin-Chong Hanis Hazeera Harith Wan Abd Al Qadr Imad Wan-Mohtar Rashidah Sukor department of food science， faculty of food science and technology， university putra malaysia department of Biological sciences and Biotechnology， faculty of science and technology， university Kebangsaan malaysia department of Biomedical science， faculty of Medicine and Health sciences， university putra malaysia Bioresources and Bioprocessing Research Group， Institute of Biological sciences， faculty of science， university Malaya Laboratory of food Safety and food Integrity， Institute of Tropical Agriculture and food Security， university putra malaysia

This review attempts to delineate the effects and roles of fermented foods on allergic responses (AR)， specifically from milk， plant， and meat sources. Evidence for AR alleviation and aggravation were noted for many different fermented food groups. Positive outcomes on AR through fermented foods could be linked to microbial hydrolysis of food allergens， improvement in gut microbiota robustness， and modulation of the immune system that promotes balance between T helper 1 (Th1) and Th2 cells. Studies on plant-based， non-protein rich fermented foods tend to show more favourable results compared to those on meat-based or protein-rich group. The usage of specific and known starter cultures are helpful in alleviating AR， as in the case for many yogurt， kefir or dahi products. Sufficient fermentation time was also deemed important， exemplified in studies that showed inefficient AR reduction through consumption of less aged cheese. However， formation of new allergens through fermentation of certain meat-based foods， or by using specific fermenting microbes (e.g. Penicillium sp.)， is possible. Thus， combination of starter cultures and food substrates must be considered in preventing or eliminating AR from intake of these foods. This review may aid consumers to make informed during the consumption of fermented food.

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Bio-Fertilizer,Ground Magnesium Limestone and Basalt Applications May Improve Chemical Properties of malaysian Acid Sulfate Soils and Rice Growth

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Pedosphere 2014年第6期24卷 827-835页

作者： Q.A.PANHWAR U.A.NAHER O.RADZIAH J.SHAMSHUDDIN I.MOHD RAZI department of Land Management Faculty of AgricultureUniversity Putra MalaysiaSerdang 43400 (Malaysia) Institute of Tropical Agriculture University Putra MalaysiaSerdang 43400 (Malaysia) Soil science Division Bangladesh Rice Research InstituteGazipur 1701 (Bangladesh)

Acid sulfate soils are normally not suitable for crop production unless they are appropriately ameliorated. An experiment was conducted in a glasshouse to enhance the growth of rice, variety MR219, planted on an acid sulfate soil using various soil *** soil was collected from Semerak, Kelantan, malaysia. Ground magnesium limestone(GML), bio-fertilizer, and basalt(each 4t ha-1) were added either alone or in combinations into the soil in pots 15 d before transplanting. Nitrogen, P and potash were applied at 150, 30, and 60 kg ha-1, respectively. Three seven-day-old rice seedlings were transplanted into each pot. The soil had a p H of 3.8 and contained organic C of 21 g kg-1, N of 1.2 g kg-1, available P of 192 mg kg-1, exchangeable K of 0.05 cmol c kg-1,and exchangeable Al of 4.30 cmol c kg-1, with low amounts of exchangeable Ca and Mg(0.60 and 0.70 cmol c kg-1). Bio-fertilizer treatment in combination with GML resulted in the highest p H of 5.4. The presence of high Al or Fe concentrations in the control soil without amendment severely affected the growth of rice. At 60 d of growth, higher plant heights, tiller numbers and leaf chlorophyll contents were obtained when the bio-fertilizer was applied individually or in combination with GML compared to the control. The presence of beneficial bacteria in bio-fertilizer might produce phytohormones and organic acids that could enhance plant growth and subsequently increase nutrient uptake by rice. Hence, it can be concluded that addition of bio-fertilizer and GML improved rice growth by increasing soil p H which consequently eliminated Al and/or Fe toxicity prevalent in the acid sulfate soil.

关键词： Al toxicity amendments beneficial bacteria Fe toxicity indoleacetic acid organic acids

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Physiological and Molecular Analysis of Applied Nitrogen in Rice Genotypes

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Rice science 2012年第3期19卷 213-222页

作者： Khalid Rehman HAKEEM Ruby CHANDNA Altaf AHMAD1 Muhammad IQBAL Molecular Ecology Laboratory Department of BotanyFaculty of ScienceHamdard University faculty of Forestry University Putra Malaysia department of Plant Protection College of Food and Agricultural SciencesKing Saud University

Ten genotypes of rice （Oryza sativa L.） were grown for 30 d in complete nutrient solution with 1 mmol/L （N-insufficient）,4 mmol/L （N-moderate） and 10 mmol/L （N-high） nitrogen levels,and nitrogen efficiency （NE） was *** performance,measured in terms of fresh weight,dry weight and lengths of root and shoot,was higher in N-efficient than in N-inefficient rice genotypes at low N *** these 10 genotypes,Suraksha was identified as the most N-efficient,while Vivek Dhan the most *** find out the physiological basis of this difference,the nitrate uptake rate of root and the activities of nitrate assimilatory enzymes in leaves of N-efficient and N-inefficient rice genotypes were *** experiments revealed the presence of two separate nitrate transporter systems mediating high-and low-affinity nitrate ***,the nitrate uptake by the roots of Suraksha is mediated by both high-and low-affinity nitrate transporter systems,while that of Vivek Dhan by only low-affinity nitrate transporter *** of the activities and expression levels of nitrate assimilatory enzymes in N-efficient and N-inefficient rice genotypes showed that nitrate reductase （NR） and glutamine synthetase （GS） play important roles in N assimilation under low-nitrogen conditions.

关键词： rice nitrogen absorption and assimilation nitrate nitrogen efficiency nitrogen uptake real-time PCR

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Identification of polyphenols in white mugwort (Artemisia lactiflora Wall.) ethanolic extracts and their anti-inflammatory and anti-adipogenic activity potential

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food Bioscience 2022年第3期47卷 1157-1165页

作者： Nacha Udomwasinakun Tantawan Pirak Wasaporn Preteseille Chanput department of Product Development Faculty of Agro IndustryKasetsart UniversityThailand department of food science and technology Faculty of Agro IndustryKasetsart UniversityThailand

White mugwort (Artemisia lactiflora Wall.) is known as a medicinal herb containing phytochemicals with antioxidant and *** optimal concentration of ethanol was investigated for extracting polyphenols from the fresh aerial part and dried powder of white mugwort as expressed by total phenolic content (TPC),phenolic compounds,antioxidant,anti-inflammatory,and anti-adipogenic *** various ethanol concentrations (0,25,50 or 95%) used in the extraction process,the freeze-dried extract from fresh aerial part (FE) extracted with 95% ethanol expressed the highest antioxidant activity (DPPH radical scavenging IC50 of 0.817 ± 0.06 μl/mg dry weight (DW) and FRAP value of 11.40 ± 0.86 mmol Fe(II)/g DW) and the highest TPC (61.46 ± 3.09 mgGAE/g DW).While,the freeze-dried extract from dried powder (PE) exhibited the prominent antioxidant properties (DPPH radical scavenging IC50 of 0.975 ± 0.03 μl/mg DW and FRAP value of 07.60 ± 0.22 mmol Fe(II)/g DW),TPC (48.11 ± 1.45 mgGAE/g DW) when extracted with 50% *** phenolic compounds—two phenolic acids (gallic acid and tannic acid) and five flavonoids (apigenin,isoquercetin,quercetin,rutin,and catechin) were identified in FE and PE using HPLC-DAD/*** inflammatory genes were down-regulated in lipopolysaccharide-stimulated THP-1 monocytes treated with PE,suggesting anti-inflammatory *** accumulation in 3T3-L1 adipocytes treated with FE at 60 μ gGAE/mL decreased to 12.8%,while the decrease of 36.8% was detected in ***,flavonoids were suggested to be responsible for the stronger bioactivity of PE over ***,this work originally revealed the investigation of the anti-inflammatory and anti-adipogenic activity of white mugwort on THP-1 and 3T3-L1 cells.

关键词： White mugwort Artemisia lactiflora Phenolic compounds Anti-inflammatory Anti-adipogenesis

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Survival of potential probiotic isolated from fermented tea leaf and encapsulated in multilayer beads stored in makiang(Cleistocalyx nervosum ***)juice

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food Bioscience 2022年第6期50卷 389-395页

作者： Paramaporn Kerdsup Passarin Hattayapichat Juan L.Silva Sumate Tantratian department of food technology Faculty of ScienceChulalongkorn UniversityBKK10330Thailand Program in Biotechnology Faculty of ScienceChulalongkorn UniversityBKK10330Thailand department of Biotechnology and Agricultural Product Faculty of Agricultural Product Innovation and TechnologySrinakharinwirot UniversityNakhonnayok26120Thailand department of food science Nutrition and Health PromotionMississippi State UniversityMS39762USA

Cleistocalyx nervosum *** juice or makiang juice has high content of acid and phenolic compounds which are detrimental to probiotic *** screening of potential probiotic with acid production and phenolic tolerant bacteria from fermented tea leaves revealed 5 isolates which were identified using 16s rRNA sequencing procedure and found similarity to the strain of Lactobacillus plantarum in GenBank database at 98–100%.The storage of 5 isolates and 6 probiotics in makiang juice for 24 h was indicated that *** MF105 and TISTR 2074 showed the least reduction of 30.10±1.25 and 61.41±2.37%,*** cultures were encapsulated in 2%alginate bead(Al),Al+single-layer of gelatin(ACG),and Al+double-layer of gelatin(ACGD).They were kept in makiang juice at 4°*** physico-chemical characteristics of beads in makiang juice illustrated that the accumulation of phenolic compounds was faster than the pH decreasing and caused initial reduction of bacterial *** ACGD beads absorbed slower and accumulated less amount of phenolic compounds than *** were the most effective in cell protection,the viability of encapsulated MF105 and TISTR2074 were prolonged to more than 7 and 4 days,*** adaptation in combination with encapsulation enhanced the survival of probiotic cell in sub-lethal stress *** had shown that increasing the coating layer provided a chance to improve lethality of probiotic bacteria.

关键词： Anthocyanin Alginate gel Refrigeration temperature Adaptation

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Copper oxide nanoparticles-loaded zeolite and its characteristics and antibacterial activities

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Journal of Materials science & technology 2017年第8期33卷 889-896页

作者： Abdullah A.Alswat Mansor Bin Ahmad Mohd Zobir Hussein Nor Azowa Ibrahim Tawfik A.Saleh department of Chemistry Faculty of ScienceUniversiti Putra MalaysiaSelangor 43400Malaysia department of Chemistry Sana'a UniversityYemen department of Chemistry King Fahcl University of Petroleum&MineralsDhahran 31261Saudi Arabia

In the present work, a simple and green co-precipitation method was used to prepare copper oxide-zeolite nanocomposites（CuO-zeolite NCs）. The weight ratio（1, 3, 5, 8 and 10 wt%） of CuO nanoparticles（NPs）loaded into zeolite was investigated to obtain the optimum CuO distribution for antibacterial *** prepared CuO-zeolite NCs were characterized by ultraviolet-visible（UV–vis） spectroscopy, Fourier transform infrared（FT-IR） spectroscopy, powder X-ray diffraction（XRD）, and energy dispersive X-ray fluorescence spectrometry（EDXRF）. The transmission electron microscopy（TEM） and field emission scanning electron microscopy（FE-SEM） revealed a uniform surface morphology of the CuO-zeolite *** UV–vis spectrum of NCs showed absorption peaks between 230 and 280 nm for nano-CuO in the XRD patterns, and new peaks appeared between（36.56？–38.83？） related to the CuO. At weight ratio less than 10 wt%, the CuO nanoparticles loaded to the zeolite exhibited spherical shapes with average particle diameter of 6.5 nm measured by TEM and XRD. Antibacterial activities were tested against Gram-negative and Gram-positive bacteria. The obtained results showed that, CuO-zeolite NCs with 8 wt% CuO nanoparticles had the highest antibacterial activities against Bacillus Subtilis B29 and Salmonella Choleraesuis ATCC10708, which can be attributed to the good dispersion of CuO NPs on the zeolite surface.

关键词： Copper oxide-zeolite Nanocomposites Antibacterial

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Benchmarking Performance of Document Level Classification and Topic Modeling

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Computers, Materials & Continua 2022年第4期71卷 125-141页

作者： Muhammad Shahid Bhatti Azmat Ullah Rohaya Latip Abid Sohail Anum Riaz Rohail Hassan department of Computer science COMSATS University IslamabadLahorePakistan department of Communication technology and Network Faculty of Computer ScienceUniversiti Putra MalaysiaSelangor43400Malaysia Othman Yeop Abdullah Graduate School of Business(OYAGSB) Universiti Utara Malaysia(UUM)Kuala Lumpur50300Malaysia

Text classification of low resource language is always a trivial and challenging *** paper discusses the process of Urdu news classification and Urdu documents *** is one of the most famous spoken languages in *** implementation of computational methodologies for text classification has increased over ***,Urdu language has not much experimented with research,it does not have readily available datasets,which turn out to be the primary reason behind limited research and applying the latest methodologies to the *** overcome these obstacles,a mediumsized dataset having six categories is collected from authentic Pakistani news *** is a rich but complex *** processing can be challenging for Urdu due to its complex features as compared to other *** frequency-inverse document frequency(TFIDF)based term weighting scheme for extracting features,chi-2 for selecting essential features,and Linear discriminant analysis(LDA)for dimensionality reduction have been *** matrix and cosine similarity measure have been used to identify similar documents in a collection and find the semantic meaning of words in a document FastText model has been *** training-test split evaluation methodology is used for this experimentation,which includes 70%for training data and 30%for testing ***-of-the-art machine learning and deep dense neural network approaches for Urdu news classification have been ***,we trained Multinomial Naïve Bayes,XGBoost,Bagging,and Deep dense neural *** and deep dense neural network outperformed the other *** experimental results show that deep dense achieves 92.0%mean f1 score,and Bagging 95.0%f1 score.

关键词： Deep neural network machine learning natural language processing TFIDF sparse matrix cosine similarity classification linear discriminant analysis gradient boosting

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Nutritional composition,bioactivity,starch characteristics,thermal and microstructural properties of germinated pigeon pea flour

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food Bioscience 2022年第5期49卷 512-523页

作者： Chiemela Enyinnaya Chinma Joseph Oneh Abu Olajide Emmanuel Adedeji Lilian Chinelo Aburime Dorcas Graceful Joseph Glory Fadekemi Agunloye Janet Adeyinka Adebo Samson Adeoye Oyeyinka Patrick Berka Njobeh Oluwafemi Ayodeji Adebo department of food science and technology Federal University of Technology MinnaNigeria department of Biotechnology and food technology Faculty of ScienceUniversity of JohannesburgDoornfontein CampusGautengSouth Africa department of food science and technology University of Agriculture MakurdiNigeria department of food science and technology Federal University WukariWukariNigeria Human Nutrition and Dietetics department Faculty of Basic Medical SciencesUniversity of CalabarNigeria food Evolution Research Laboratory School of Tourism and HospitalityCollege of Business and EconomicsUniversity of JohannesburgP.O.Box 524Bunting Road CampusGautengSouth Africa National Centre for food Manufacturing University of LincolnHolbeachPE127PTUK

There is an increase in the use of adoptable bioprocessing methods for the development of high-quality pulse *** study investigated the nutritional composition,physicochemical,bioactivity,in vitro digestibility,functional,pasting,thermal and colour characteristics of germinated(24-72 h)pigeon *** increased(p≤0.05)protein,dietary fiber,calcium,iron,zinc,vitamins B,vitamin C(1.25-8.46 mg/100 g),resistant starch,protein digestibility(72.30-82.66 g/100 g),total phenolic content,antioxidant activities and most amino *** acid,tannin and trypsin inhibitor activity decreased significantly during *** also increased water absorption capacity,protein solubility,foaming capacity,emulsion stability and activity of the flours while bulk density ***,pasting,thermal and color,properties of pigeon pea was modified following *** study demonstrated that short-term germination is a natural means for the development of functional pigeon pea flour to promote its application in the food industry.

关键词： Nutrient quality Digestibility Legume Short-time germination Functional properties

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Methyl gallate isolated from Mangifera pajang kernel induces proliferation inhibition and apoptosis in MCF-7 breast cancer cells via oxidative stress

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Asian Pacific Journal of Tropical Biomedicine 2022年第4期12卷 175-184页

作者： Ranneh Yazan Abu Bakar Mohd Fadzelly Rahim Azlen-Che Kassim Nur Kartinee Stanslas Johnson Teh Yuan-Han Fadel Abdulmannan Ellulu Mohammed S department of technology and Natural Resources Faculty of Applied Science and TechnologyUniversiti Tun Hussein Onn MalaysiaPagoh CampusKM1 Panchor RoadMuar JohorMalaysia department of Chemistry Faculty of ScienceUniversiti Putra MalaysiaSerdang 43300Malaysia department of Medicine Faculty of Medicine and Health SciencesUniversiti Putra MalaysiaSelangorMalaysia Sport and Exercises sciences School Faculty of ScienceLiverpool John Moores UniversityLiverpoolUK department of Clinical Nutrition Faculty of Applied Medical SciencesAl-Azhar University of GazaGaza CityState of Palestine

Objective:To determine the lead bioactive compound in kernel extract of Mangifera pajang and its anti-cancer activity against human breast cancer cell lines with positive estrogen receptor(MCF-7).Methods:The methanolic extract of dried powder kernel of Mangifera pajang was exposed to column chromatography for *** structural elucidation of the isolated compound was characterized using infrared,nuclear magnetic resonance,mass ***,cytotoxicity,morphological changes,flow cytometry and cell cycle arrest analyses were performed to examine the mechanism of anti-proliferation and apoptosis induced by methyl gallate against ***:One compound was isolated from the methanolic extract of Mangifera pajang kernel and identified as methyl *** flow cytometric results demonstrated induction of apoptosis in MCF-7 cells by three concentrations of methyl *** cell cycle arrest showed a significant(P<0.05)decrease in cell progression at G2/M phase of MCF-7 after treatment with 100μM of methyl *** cell percentage of early and late apoptosis was significant at 10 and 100μM of methyl ***,methyl gallate treatment induced up-regulation of reactive oxygen species levels in MCF-7 cells with a reduction in superoxide dismutase ***:These findings indicate that isolated methyl gallate from Mangifera pajang kernel extracts induces growth inhibition and apoptosis in MCF-7 cells via up-regulating oxidative stress pathway.

关键词： Mangifera pajang Methyl gallate Breast cancer Cell cycle Apoptosis Oxidative stress

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