Purification and Identification of Antioxidant Peptides from Fermented Fish Sauce (Budu)     

Leila Najafian  Abdul Salam Babji 《Journal Of Aquatic Food Product Technology》2019,28(1):14-24

This study aimed to isolate antioxidant peptides from Budu extract and identify novel antioxidant peptides using high-performance liquid chromatography (HPLC) and electrospray ionization-time-of-flight mass spectrometry (ESI-TOF MS/MS). An amino acid analyzer was used to analyze the amino acid composition of peptides. Two novel peptides, Lue-Asp-Asp-Pro-Val-Phe-Ile-His (LDDPVFIH) and Val-Ala-Ala-Gly-Arg-Thr-Asp-Ala-Gly-Val-His (VAAGRTDAGVH), were identified. The synthesized peptide of LDDPVFIH showed higher antioxidant activity. The presence of hydrophobic amino acids (Ile and Leu), acidic (Asp) and basic (His) amino acids in the peptide sequences is believed to contribute to the high antioxidant activity of the fermented anchovy fish (Budu) extract. Thus, the two peptides may have potential application as functional foods and could also be used as nutraceutical compounds.  相似文献   

Antimycotic Screening of 58 Malaysian Plants against Plant Pathogens     

Suhaila Mohamed  Suzana Saka  Saleh H. El-Sharkawy  Abdul Manaf Ali  Sepiah Muid 《Pest management science》1996,47(3):259-264

Ethanolic extracts of 58 Malaysian plants belonging to 24 different families were screened for antifungal activity against seven plant pathogens using the filter paper disc diffusion technique. Two varieties of Piper betle, showed strong activity against all the pathogens tested (Colletotrichum capsici, Fusarium pallidoroseum, Botryodiplodia theobromae, Alternaria alternata, Penicillium citrinum, Phomopsis caricae-papayae and Aspergillus niger), with inhibition diameters significantly (P<0·01) bigger than 2·5 mg ml⁻¹ prochloraz or 10 mg ml⁻¹ clotrimazole. The minimum inhibitory concentrations of the ethanolic extracts of P. betle against these plant pathogens ranged between 0·01 mg ml⁻¹ and 1 mg ml⁻¹. Thirty-four other plants (Kucing gala, Limau batik, Bertholletia excelsa, Bixa orellana, Caesalpinia pulcherrima, Cerbera odollam (fruits and leaves), Colocasia gigantea, Curcuma domestica, Curcuma manga, Derris eliptica, Elephantopus scaber, Eleusine indica, Eugenia polyantha, Euphorbia hirta, Euphorbia tirucalli, Gardenia florida, Hedyotis auricularia, Hibiscus rosa-sinensis, Juniperus chinensis (three varieties), Lawsonia inermis, Lecythis ollaria, Mentha arvensis, Mimusops elengi, Ocimum sanctum, Phyllanthus niruri, Piper nigrum, Piperomia pellucida, Pedilanthus tithymaloides, Polygonum minus, Spondias dulcis, Solanum nigrum, Tinospora tuberculata) showed selective antifungal activity, while 21 species were inactive.  相似文献   

Effects of thyroxine,cod liver oil and potassium iodide on growth and survival of juvenile seahorse,Hippocampus barbouri          下载免费PDF全文

Fatihah Abd Halid Nur  Annie Christianus  Abd Rahim Abdullah  Muta Harah Zakaria  Che Roos Saad 《Aquaculture Research》2018,49(2):867-873

Low survival at early stage is the bottleneck in seahorse aquaculture, particularly in the feeding aspect since newborn seahorses must feed immediately upon birth to sustain themselves. Seahorses are visual predator, therefore preferred live feed such as zooplankton. In aquaculture, the most common live feed used is Artemia. In this study, two experiments were conducted to determine the effect of different Artemia enrichment on the growth and survival of newborn Hippocampus barbouri. In the first experiment, six treatments using Artemia enriched with Culture Selco Plus? (SELCO), thyroxine (T4), potassium iodide (KI), cod liver oil (CLO), cod liver oil in combination with thyroxine (CLO + T4) and potassium iodide (CLO+KI) were fed to newborn H. barbouri. Newly hatched Artemia were used as control. At the end of first experiment, treatments using CLO + T4 produced juvenile H. barbouri with the best (p < .05) wet weight (0.142 ± 0.000 g), while juvenile in treatment CLO+KI recorded the highest (p < .05) standard length (3.947 ± 0.014 cm). Subsequently, a second experiment was carried out using the two best enrichment (CLO + T4 and CLO + KI) from the first experiment, but given at different frequency (daily, twice a week, once a week, once in 2 weeks). Daily enrichment using both CLO + T4 and CLO + KI showed no significant (p > .05) difference in growth performance and survival of juvenile of H. barbouri. Interestingly, juvenile fed CLO + T4 enriched Artemia at frequency of twice a week also has no significant difference (p > .05) in survival and growth performance (except for final standard length) when compared with treatment CLO + T4 at daily frequency.  相似文献   

Preparation and Characterization of Microcrystalline Cellulose from Sacred Bali Bamboo as Reinforcing Filler in Seaweed-based Composite Film     

H. P. S. Abdul Khalil  Tze Kiat Lai  Ying Ying Tye  M. T. Paridah  M. R. Nurul Fazita  A. A. Azniwati  Rudi Dungani  Samsul Rizal 《Fibers and Polymers》2018,19(2):423-434

Microcrystalline cellulose (MCC) isolated from cheap, fast-growing and abundant accessible Sacred Bali bamboo (Schizostachyum brachycladum) was utilized as reinforcement material in the seaweed-based composite film. Isolation of MCC was carried out by using a combination of pulping, bleaching and acid hydrolysis process. This study emphasized on the feasibility of MCC production from Sacred Bali bamboo by studying its properties using X-ray diffraction (XRD), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The commercial-MCC (CMCC) was used as reference material. Results showed that the production yield, moisture content (MC) and fiber length of bamboo-MCC (BMCC) were 83.37±1.48 %, 4.50±0.5 %, and 0.47±0.02 mm, respectively. According to the chemical analysis by FTIR, both lignin and hemicellulose were completely removed from BMCC, and thus, improved the crystallinity (78 %) and thermal stability (≈325 °C) of BMCC. This study also revealed that MCC produced from Sacred Bali bamboo demonstrated strong mechanical reinforcement effect in the seaweed-based film. Hence, Sacred Bali bamboo-MCC could be used as reinforcement material in the polymer.  相似文献   

Influence of Hydrophobicity of Acetylated Nanocellulose on the Mechanical Performance of Nitrile Butadiene Rubber (NBR) Composites     

Mohamad Nurul Azman Mohammad Taib  Wageeh Abdulhadi Yehye  Nurhidayatullaili Muhd Julkapli  Sharifah Bee O. A. Abdul Hamid 《Fibers and Polymers》2018,19(2):383-392

Novel acetylation process by substitution of acetic anhydride substitution with hydroxyl groups on nanocellulose (NCC) has been explored to increase its dispersion and interaction in nitrile butadiene (NBR) matrix. The crystallinity index was increased after modification when compared to unmodified NCC, but no significant different with increases of treatment time from 1 hour to 3 hours treatments proven by X-ray diffraction (XRD) results. The Fourier transform infra-red (FTIR) showed the existent of acetyl groups on surface of the NCC after treatment by existent of the peak 1736 cm^-1 that attributed to carbonyl groups some peaks were observed at 1430, 1361 and 1248 cm^-1 and confirmed on the acetylation process. The nuclear magnetic resonance (NMR) also show the present of acetyl groups by existent of the signal of proton methyl group at 1.90 ppm and new peaks at 5.42, 4.70 and 4.34 ppm, for all ACN samples. The thermal results by thermo gravimetric analysis (TGA) and differential scanning calorimetry (DSC) showed that the acetylated NCCs were 10 % more thermally stable. Transmission electron microscopic (TEM) results showed that no significant changes were observed due to the acetylation process. The results also showed well distributed of individual NCC after acetylation, this improvement was primarily attributed to uniform dispersion of the ACN-NCC and less aggregated occurred. Due to its hydrophobic characteristics, highly crystalline and nano size, ACN-NCC brought a significant improvement up to 25 % on the mechanical properties of nitrile butadiene (NBR) rubber composites.  相似文献   

Drosophila suzukii population response to environment and management strategies     

Nik G. Wiman  Daniel T. Dalton  Gianfranco Anfora  Antonio Biondi  Joanna C. Chiu  Kent M. Daane  Beverly Gerdeman  Angela Gottardello  Kelly A. Hamby  Rufus Isaacs  Alberto Grassi  Claudio Ioriatti  Jana C. Lee  Betsey Miller  M. Valerio Rossi Stacconi  Peter W. Shearer  Lynell Tanigoshi  Xingeng Wang  Vaughn M. Walton 《Journal of pest science》2016,89(3):653-665

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Recurrent parent genome recovery in different populations with the introgression of Sub1 gene from a cross between MR219 and Swarna-Sub1     

Fahim Ahmed  Mohd Y. Rafii  Mohd Razi Ismail  Abdul Shukor Juraimi  Harun Abdul Rahim  Fatah Abro Tanweer  Mohammad Abdul Latif 《Euphytica》2016,207(3):605-618

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Solar Photocatalytic Mineralization of Dye New Coccine in Aqueous Phase Using Different Photocatalysts     

Wan Fadhilah Khalik  Li-Ngee Ho  Soon-An Ong  Yee-Sian Wong  Nik Athirah Yusoff  Fahmi Ridwan 《Water, air, and soil pollution》2016,227(4):118

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Adsorption of Cesium,Cobalt, and Lead onto a Synthetic Nano Manganese Oxide: Behavior and Mechanism     

Jamal Al Abdullah  Abdul G. Al Lafi  Wafa’a Al Masri  Yusr Amin  Tasneem Alnama 《Water, air, and soil pollution》2016,227(7):241

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Effect of potassium fertilization on yield and potassium nutrition of Boro rice in a wetland ecosystem of Bangladesh     

Aminul Islam  Abdul Muttaleb 《Archives of Agronomy and Soil Science》2016,62(11):1530-1540

Effect of potassium (K) fertilization (0, 20, 40, 60, 80 and 100 kg K ha^?1) on yield, nitrogen (N) and K nutrition of Boro (dry season) rice and apparent soil K balance was studied. Experiment was conducted at Bangladesh Rice Research Institute (BRRI) regional station farm, Habiganj, Bangladesh during 2007–2008 to 2009–2010 in a wetland rice ecosystem under haor area. Cropping pattern was Boro–Fallow–Fallow. A popular rice variety BRRI dhan29 was tested in a randomized complete block design with three replications. Results indicated that BRRI dhan29 maintained an average grain yield of 5.19 t ha^?1 year^?1 without K fertilization. Potassium fertilization significantly increased the grain yield to 6.86 t ha^?1 year^?1. Quadratic equations best explained the progressive increase of rice yield with increasing K rates. Optimum dose of K in 3 years ranged from 78 to 93 kg ha^?1. Internal N use efficiency of rice decreased with increasing K rates. However, K use efficiency was inconsistent. Apparent K balance study revealed that application of 100 kg K ha^?1 was not able to maintain a positive K balance in soil under wetland ecosystem with Boro–Fallow–Fallow cropping system. However, K fertilization decreased the negativity of K balance in soil.  相似文献