Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

2017

Journal

Discipline
Institution
Keyword
Publication

Articles 1 - 30 of 3296

Full-Text Articles in Life Sciences

Korelasi Perubahan Nilai Vo2max, Eritrosit, Hemoglobin Dan Hematokrit Setelah Latihan High Intensity Interval Training, Kukuh Pambuka Putra, Muchamad Arif Al Ardha, Angkit Kinasih, Redyte Setio Aji Dec 2017

Korelasi Perubahan Nilai Vo2max, Eritrosit, Hemoglobin Dan Hematokrit Setelah Latihan High Intensity Interval Training, Kukuh Pambuka Putra, Muchamad Arif Al Ardha, Angkit Kinasih, Redyte Setio Aji

Jurnal Keolahragaan

Kebugaran kardiorespirasi memungkinkan aktivitas fisik dalam waktu lama dan memerlukan oksigen untuk mendapatkan energi. Transpor oksigen dimediasi oleh hemoglobin yang terdapat dalam eritrosit. Kebugaran kardiorespirasi dapat diukur berdasarkan nilai VO2max. Metode latihan High Intensity Interval Training (HIIT) terbukti dapat meningkatkan VO2max. Namun belum jelas apakah peningkatan VO2max diiringi dan berhubungan dengan perubahan nilai hemoglobin, eritrosit dan hematokrit. Penelitian ini mempelajari korelasi perubahan nilai VO2max, hemoglobin, eritrosit dan hematokrit sebelum dan sesudah latihan HIIT selama 8 minggu. Berdasarkan hasil penelitian, VO2max meningkat sebesar 7,33±4,03 (ml·kg-1·min-1) atau 20,36% …

Go to article

Pengaruh Daya Ledak Otot Lengan, Kelentukan Panggul, Dan Koordinasi Terhadap Keterampilan Tolak Peluru Gaya O'Brien, Dwi Rizki Ambarwati, Widiastuti Widiastuti, Karisdha Pradityana Dec 2017

Pengaruh Daya Ledak Otot Lengan, Kelentukan Panggul, Dan Koordinasi Terhadap Keterampilan Tolak Peluru Gaya O'Brien, Dwi Rizki Ambarwati, Widiastuti Widiastuti, Karisdha Pradityana

Jurnal Keolahragaan

Penelitian ini bertujuan untuk menemukan jawaban yang akurat secara ilmiah tentang ada atau tidaknya pengaruh daya ledak otot lengan, kelentukan panggul, koordinasi terhadap keterampilan tolak peluru gaya O'Brien. Metode penelitian yang digunakan dalam penelitian ini adalah pendekatan kuantitatif, metode survei dengan teknik tes dan pengukuran. Sedangkan teknik analisis mengunakan pendekatan analisis jalur (path analysis). Hasil Penelitian ini adalah terdapat pengaruh positif antara power otot lengan terhadap keterampilan tolak peluru gaya O'Brien, terdapat pengaruh positif antara kelentukan panggul terhadap keterampilan tolak peluru gaya O'Brien, terdapat pengaruh positif antara koordinasi terhadap keterampilan tolak peluru gaya O'Brien, terdapat pengaruh positif antara power …

Go to article

Pengembangan Latihan Teknik Dasar Judo Melalui Model Permainan Untuk Pejudo Pemula Usia 8-12 Tahun, Africo Ramadhani, Sugeng Purwanto Dec 2017

Pengembangan Latihan Teknik Dasar Judo Melalui Model Permainan Untuk Pejudo Pemula Usia 8-12 Tahun, Africo Ramadhani, Sugeng Purwanto

Jurnal Keolahragaan

Penelitian ini bertujuan untuk menghasilkan model permainan teknik dasar untuk pejudo pemula usia 8-12 tahun, penelitian ini dilakukan dengan mengadaptasi langkah-langkah penelitian pengembangan Borg dan Gall (1983, p. 775), yang diadaptasi menjadi 8 langkah pelaksanaan penelitian, langkah-langkah tersebut antara lain: (1) pengumpulan informasi lapangan (2) analisis informasi yang telah dikumpulkan (3) mengembangkan produk awal, (4) Validasi ahli dan revisi (5) Uji coba lapangan skala kecil dan revisi (6) uji coba lapangan skala besar dan revisi (7) pembuatan produk final (8) uji evektivitas produk. Ujicoba skala kecil dilakukan dilakukan terhadap 20 orang pejudo pemula club judo kota Yogyakarta. Ujicoba skala besar …

Go to article

Pengaruh Metode Latihan Drill Dan Koordinasi Terhadap Ketepatan Servis Tenis Meja, Mu'ammar Mu'ammar Dec 2017

Pengaruh Metode Latihan Drill Dan Koordinasi Terhadap Ketepatan Servis Tenis Meja, Mu'ammar Mu'ammar

Jurnal Keolahragaan

Penelitian ini bertujuan untuk mengetahui: (1) perbedaan pengaruh metode latihan drill arah sasaran konstan dan drill arah sasaran berubah-ubah terhadap ketepatan servis backspin tenis meja atlet pemula, (2) perbedaan keterampilan sevis backspin tenis meja antara siswa yang mempunyai koordinasi tinggi dan rendah, dan (3) interaksi antara metode latihan drill arah sasaran konstan dan drill arah sasaran berubah-ubah dan koordinasi terhadap ketepatan servis tenis meja atlet pemula. Penelitiaan ini merupakan penelitian ekperimen dengan rancangan faktorial 2 x 2. Sampel penelitian ini 28 atlet yang diambil dengan teknik rondom sampling. Teknik analisis data yang digunakan adalah analisis varian (Anava). Hasil penelitian …

Go to article

Pengaruh Metode Latihan (Resiprokal Dan Inklusi) Persepsi Kinestetik Terhadap Teknik Overhead Lob Forehand Bulu Tangkis, Muhammad Husni Tamim Dec 2017

Pengaruh Metode Latihan (Resiprokal Dan Inklusi) Persepsi Kinestetik Terhadap Teknik Overhead Lob Forehand Bulu Tangkis, Muhammad Husni Tamim

Jurnal Keolahragaan

Tujuan penelitian ini adalah untuk mengetahui: (1) perbedaan pengaruh metode latihan resiprokal dan inklusi terhadap peningkatan teknik overhead lob forehand pada bulu tangkis. (2) Perbedaan keterampilan teknik overhead lob forehand bulu tangkis pada persepsi kinestetik tinggi dan persepsi kinestetik rendah. (3) Pengaruh interaksi antara metode latihan (resiprokal dan inklusi) dan persepsi kinestetik terhadap peningkatan teknik overhead lob forehand pada bulu tangkis. Penelitian ini menggunakan desain penelitian eksperimen faktorial. Teknik analisis data yang digunakan uji normalitas (Kolmogorov Smirnov) dan uji homogenitas (Levene) signifikansi a = 0.05. Hasil penelitian menunjukkan bahwa: (1) ada perbedaan pengaruh antara metode latihan resiprokal dan inklusi terhadap …

Go to article

Pengaruh Metode Latihan Dan Koordinasi Mata-Tangan Terhadap Hasil Keterampilan Servis Atas Bola Voli, Yohana Bela Christian Sari, Guntur Guntur Dec 2017

Pengaruh Metode Latihan Dan Koordinasi Mata-Tangan Terhadap Hasil Keterampilan Servis Atas Bola Voli, Yohana Bela Christian Sari, Guntur Guntur

Jurnal Keolahragaan

Penelitian ini bertujuan untuk mengetahui: (1) perbedaan pengaruh metode massed practice dan metode manipulasi jarak servis terhadap hasil keterampilan servis atas (top spin) bola voli (2) perbedaan hasil servis atas (top spin) bola voli yang memiliki koordinasi mata-tangan tinggi dan koordinasi mata-tangan rendah terhadap hasil keterampilan servis atas (top spin) bola voli, dan (3) interaksi antara metode latihan dan koordinasi mata-tangan terhadap hasil keterampilan servis atas (top spin) bola voli. Metode penelitian ini menggunakan eksperimen dengan rancangan faktorial 2 x 2. Populasi penelitian ini adalah anak latih ekstrakurikuler SMP di Kalasan Sleman …

Go to article

Pengembangan Alat Tempo Trainer Untuk Membantu Efisiensi Gerakan Lengan Gaya Bebas Cabang Olahraga Renang, Bahtiyar Heru Susanto Dec 2017

Pengembangan Alat Tempo Trainer Untuk Membantu Efisiensi Gerakan Lengan Gaya Bebas Cabang Olahraga Renang, Bahtiyar Heru Susanto

Jurnal Keolahragaan

Penelitian ini bertujuan untuk mengembangkan alat tempo trainer untuk membantu efisiensi gerakan lengan gaya bebas pada cabang olahraga renang. Uji coba skala kecil dilakukan terhadap 4 pelatih dan 10 atlet di perkumpulan renang Tirta Alvita dan Yuso. Uji coba skala besar dilakukan terhadap 10 pelatih dan 25 atlet di perkumpulan renang Tirta Alvita, Yuso, Dolphin, Caesar, dan Arwana. Instrumen yang digunakan untuk mengumpulkan data adalah angket berdasarkan analisis PIECES (performance, information, economic, control, efficiency, service). Hasil penilaian ahli, pelatih, dan atlet terhadap alat tempo trainer menunjukkan bahwa penilaian berkategori baik, valid, dan reliabel. Berdasarkan hasil tersebut, alat tempo trainer yang …

Go to article

Pengaruh Metode Latihan Dan Daya Tahan Otot Tungkai Terhadap Hasil Peningkatan Kapasitas Vo2max Pemain Bola Basket, Gregorius Pito Wahyu Prakoso, Fx Sugiyanto Dec 2017

Pengaruh Metode Latihan Dan Daya Tahan Otot Tungkai Terhadap Hasil Peningkatan Kapasitas Vo2max Pemain Bola Basket, Gregorius Pito Wahyu Prakoso, Fx Sugiyanto

Jurnal Keolahragaan

Penelitian ini bertujuan untuk mengetahui: (1) perbedaan pengaruh metode circuit training dan metode interval training terhadap hasil peningkatan kapasitas VO2Max bola basket (2) perbedaan hasil peningkatan kapasitas VO2Max bola basket yang memiliki daya tahan otot tungkai tinggi dan daya tahan otot tungkai rendah terhadap hasil peningkatan kapasitas VO2Max bola basket, dan (3) interaksi antara metode latihan dan daya tahan otot tungkai terhadap hasil peningkatan kapasitas VO2Max bola basket. Metode penelitian ini menggunakan eksperimen dengan rancangan faktorial 2 x 2. Sampel penelitian ini 20 anak didik yang diambil dengan teknik Purposive Sampling. …

Go to article

Pvaast Anallysis Of Alzheimer’S Disease Sequencing Project Pedigree Data, Kristen Crofts, John S. K. Kauwe Dec 2017

Pvaast Anallysis Of Alzheimer’S Disease Sequencing Project Pedigree Data, Kristen Crofts, John S. K. Kauwe

Journal of Undergraduate Research

Alzheimer’s disease is a progressive brain disorder affecting more than 10 percent of Americans over the age of 65 (1). This disease destroys memory and thinking skills and is a leading cause of dementia. Although research in recent years has provided substantial information related to risk factors associated with Alzheimer’s disease, a great deal of information still remains unknown. PVAAST is a software tool that can analyze genome sequence data of Alzheimer’s patients in a creative way by also analyzing the patients’ pedigree information. With the combined information from family members, it is more feasible to identify genetic mutations related …

Go to article

Study On Micronization Of Spi Emulsions By Ultrasonication And Microfluidization Techniques, Feng Lili, Wu Xue, Huang Zhigang, Yu Jian Dec 2017

Study On Micronization Of Spi Emulsions By Ultrasonication And Microfluidization Techniques, Feng Lili, Wu Xue, Huang Zhigang, Yu Jian

Food and Machinery

The purpose of the study was to produce soy protein isolate(SPI) micro emulsion droplet by ultrasonication and microfluidization Techniques. The changes of SPI emulsion temperature, average droplet diameter and size distribution were observed. The distribution curve of SPI droplet processed by ultrasonication has two peaks and that of SPI droplet processed by microfluidization has single peak. The results indicate that the SPI emulsion processed by high pressure is more homogeneous. The capability of reducing size by ultrasonic process (1 200 W) is very limited, and the SPI emulsion tends to agglomerate after a long time of ultrasonic process. Microfluidization (microseconds, …

Go to article

The Kinetics Of Microwave Drying Ginger Based On The Volatile Detection, Xu Wanxiu, Li Jing, Li Zhenfeng, Zhu Guanyu, Song Chunfang, Zhang Junsheng Dec 2017

The Kinetics Of Microwave Drying Ginger Based On The Volatile Detection, Xu Wanxiu, Li Jing, Li Zhenfeng, Zhu Guanyu, Song Chunfang, Zhang Junsheng

Food and Machinery

The online volatile changes of the ginger on drying process and drying characteristics were analyzed at the four constant drying temperature, 50, 60, 70, 80 ℃, respectively. The volatile emission intensity and quality of the corresponding drying temperature was compared to find out a better drying condition. It was found thatd the drying temperature at 60 ℃ could preserve preferred volatile best and avoid burning occurrence. Moreover, the color difference and rehydration ratio were olso found better.

Go to article

Quality Indifferent Degrees Of Softness Of Pickles And Itsprincipal Components Analysis Of Volatiles, Huang Shenglan, Du Muyin, Zhou Xianrong, Tang Yanyan, Li Yuzhu, Long Mou, Yu Lihong Dec 2017

Quality Indifferent Degrees Of Softness Of Pickles And Itsprincipal Components Analysis Of Volatiles, Huang Shenglan, Du Muyin, Zhou Xianrong, Tang Yanyan, Li Yuzhu, Long Mou, Yu Lihong

Food and Machinery

Taking softened radish pickles as research object, the present study explored the differences in physicochemical property and flavor substance of normal pickles and pickles with different softness, determined the flavor and analyzed the main ingredients of pickles with eadspace solid-phase microextraction-gas chromate graphy-mass spectrometry, HS-SPME-GC-MS. The experimental results showed that the acidity and salinity of softened pickles were higher than those of normal pickles. The texture index, sensory evaluation of normal pickles were all better than softened pickles, and the 4 kinds of pickles were all yellowish green. 41, 32, 37 and 30 volatile ingredients were detected in normal pickles …

Go to article

Analysis And Comparison On Solid Ispersion Performance Of Dandelion Chlorogenic Acid, Li Yan, Wang Jie, Cao Keke, Wang Zhanggui, Wang Di Dec 2017

Analysis And Comparison On Solid Ispersion Performance Of Dandelion Chlorogenic Acid, Li Yan, Wang Jie, Cao Keke, Wang Zhanggui, Wang Di

Food and Machinery

To use the solid dispersion method that could improve the dissolution rate of chlorogenic acid.With the factor experiment design, chlorogenic acid solid was mixed with PVPK30 and PEG4000 respectively, with the feed auxiliary ratio of 12, 14, 16, 18. The finished product of solid dispersion prepared by four types of mixture ratio were compared in the vitro solubility, cumulative dissolution and stability, and the optimal mixture ratio was analyzed by SEM. The experiment showed that chlorogenic acid solid dispersion could be prepared by mixture ratio of 14, with PVPK30 as carrier. Compared with crude drugs, in vitro solubility and dissolution …

Go to article

Analyses Of The Volume Of The Polybasic Acids And Higher Fatty Acids And Their Effect On Tobacco Quality, Xue Yun, Long Zhangde, Yan Jun, Liu Hong, Li Xinqin, Hu Zhizhong, Pan Yongcheng, Lin Shunshun, Zhang Xiaoming Dec 2017

Analyses Of The Volume Of The Polybasic Acids And Higher Fatty Acids And Their Effect On Tobacco Quality, Xue Yun, Long Zhangde, Yan Jun, Liu Hong, Li Xinqin, Hu Zhizhong, Pan Yongcheng, Lin Shunshun, Zhang Xiaoming

Food and Machinery

The relationship of polybasic acids and higher fatty acid content with sensory quality of tobacco raw materials from the different tobacco growing area in Hunan province was investigated, using non derivatization gas chromatographic method. Seven tobacco samples were collected from three districts/counties, and the content of polybasic acids and higher fatty acids of them were detected. The results showed that the highest content of seven kinds of tobacco among the polybasic acids was propionic acid, followed by 2-Methylbutyric acid and 3-methylvaleric acid. Among the higher fatty acids, the highest content of seven kinds of tobacco was palmitic acid, followed by …

Go to article

The Analysis And Evaluation Of Nutrients Of Sansui’S Characteristic Sheldrake Duck Eggs, Shen Changxuan, Wang Xiujun, Huang Shan Dec 2017

The Analysis And Evaluation Of Nutrients Of Sansui’S Characteristic Sheldrake Duck Eggs, Shen Changxuan, Wang Xiujun, Huang Shan

Food and Machinery

The eggs of Sansui’s characteristic sheldrake duck were researched to enrich its foundation and deepen the objective evaluation. Moisture content, crude protein content, amino acid composition and its content, crude fat content, composition and content of fatty acids, cholesterol content and the content of calcium, zinc, magnesium, iron, copper, manganese, lead and selenium of 3 kinds of egg samples in Guizhou were determined by the methods of China national standard, chromatography of gases, Inductively coupled plasma atomic emission spectrometry and spectrofluorimetry. Amino acid and fatty acids were scientifically evaluated by the method WHO/FAO Amino Acid Scoring Model, the chemical score …

Go to article

Uncertainty Evaluation Of The Determination Of Total Sugar， Reducing Sugar， Chlorine， Potassium In Tobacco, Xu Yong, Li Chao, Yang Qianxu, Qin Yunhua, Jiang Wei, Liu Zhihua, Wu Yiqin, Jiang Ciqin, Zhang Chengming, Liu Wei Dec 2017

Uncertainty Evaluation Of The Determination Of Total Sugar， Reducing Sugar， Chlorine， Potassium In Tobacco, Xu Yong, Li Chao, Yang Qianxu, Qin Yunhua, Jiang Wei, Liu Zhihua, Wu Yiqin, Jiang Ciqin, Zhang Chengming, Liu Wei

Food and Machinery

The uncertainty in the measurement for determination of the total sugar, reducing sugar, chlorine, potassium in tobacco by the continuous flow method was evaluated with the actual instance. The influence factors on the uncertainty in the measurement for determination of total sugar, reducing sugar, chlorine, potassium content were analyzed, the component and combined uncertainties were calculated, and the expanded uncertainties of the above three components were 0.44%, 0.40%, 0.02% and 0.06%, respectively, which providing the credibility and confidence interval to the measurement results.

Go to article

Analysis Of The Differences Of Heavy Metal Enrichment Between Silver Carp And Aristichthys Nobilis In East Dongting Lake, Liu Xiaowei, Lu Weiya, Xue Minmin, Li Zhonghai Dec 2017

Analysis Of The Differences Of Heavy Metal Enrichment Between Silver Carp And Aristichthys Nobilis In East Dongting Lake, Liu Xiaowei, Lu Weiya, Xue Minmin, Li Zhonghai

Food and Machinery

To evaluate the pollution of heavy metal in east Dongting Lake and analyze the differences of enrichment of heavy metal between silver carp and aristichthys nobilis, this experiment determined the concentration of five different heavy metals, including Cr, Cu, Cd, Pb and Hg, in sediment and tissues of silver carp and Aristichthys nobilis. Results show that the concentration of Cr in sediment belongs to the first state level in soil standard, the concentrations of Cu, Pb and Hg belong to the second state level in soil standard, the concentration of Cd is 2 times of the third state level in …

Go to article

Antimicrobial Activity And Chemical Composition Of Eucalyptus Essential Oil, Ren Xiaoling, Yue Shuli, Xiang Hong, Liu Huiya Dec 2017

Antimicrobial Activity And Chemical Composition Of Eucalyptus Essential Oil, Ren Xiaoling, Yue Shuli, Xiang Hong, Liu Huiya

Food and Machinery

To study the antimicrobial potential of vapor-phase Eucalyptus essential oil, the antimicrobial activity and minimum inhibitory concentrations (MIC) were evaluated against the tested microorganisms in vapor, liquid and solid phases. The chemical constitutes of Eucalyptus essential oil and its vapor were analyzed by gas chromatography-mass spectrometry (GC-MS) and solid phase microextraction (SPME) GC-MS. The results demonstrated that Eucalyptus essential oil vapor had obvious antimicrobial effect on the tested microorganisms. The antimicrobial activities of Eucalyptus essential oil vapor against Escherichia coli and Staphylococcus aurous were stronger than that against Aspergillus niger. The MIC value (0.045～0.36 mg/mL) in the vapor phase to …

Go to article

Antibacterial Activity Of Fractions And Chemical Constituents Analysis Of Dichloromethane Fraction From Bletilla Striata, Wu Yongxiang, Cheng Manhuai, Jiang Haitao, Hou Shuzeng, Wan Zhibing Dec 2017

Antibacterial Activity Of Fractions And Chemical Constituents Analysis Of Dichloromethane Fraction From Bletilla Striata, Wu Yongxiang, Cheng Manhuai, Jiang Haitao, Hou Shuzeng, Wan Zhibing

Food and Machinery

Bletilla striata extracts were prepared by methanol circumfluence extraction. Five different polarity fractions were obtained by extraction in turn with n-hexane, dichloromethane, ethyl acetate, n-butanol and water. The inhibiting effects on E. coli, S.aureus, B.subtilis and P.aeruginos were measured by using filter paper disc diffusion method and minimum inhibitory concentration (MIC) method. The chemical constituents of the active fraction were analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that the methanol extract, n-hexane and dichloromethane fractions exhibited significant inhibition against four common bacterial strains. Dichloromethane fraction presented the best antibacterial effect than other fractions (P＜0.05). Dichloromethane fraction exerted potent …

Go to article

Study On Impact Characteristics Of Rubber Seeds, Li Zihao, Wang Tao Dec 2017

Study On Impact Characteristics Of Rubber Seeds, Li Zihao, Wang Tao

Food and Machinery

It is an important method to break rubber seeds with the principle of collision. In order to study the breaking mechanics of rubber seeds in the collision process, the instantaneous impact force of rubber seeds was measured by RFP data acquisition system. In this experiment, single factor method was adopted to select the height, angle and initial velocity factors to analyze the influence of various factors on the impact force of rubber seeds. The experimental results showed that (the perspective of the range is 0° to 90°) : When height increased from 0.5 m to 2.0 m, the collision force …

Go to article

Study Of Ozone And Electron Beam Irradiation On Degradation Of Zearalenone And Ochratoxin A, Luo Xiaohu, Li Ke, Wang Ren, Xing Jiali, Wang Li, Du Zhihong, Pan Lihong, Sun Dongling, Li Yanan, Chen Zhengxing Dec 2017

Study Of Ozone And Electron Beam Irradiation On Degradation Of Zearalenone And Ochratoxin A, Luo Xiaohu, Li Ke, Wang Ren, Xing Jiali, Wang Li, Du Zhihong, Pan Lihong, Sun Dongling, Li Yanan, Chen Zhengxing

Food and Machinery

Mycotoxin contamination caused by Zearalenone (ZEN) and Ochratoxin A (OTA) is widespread for being prone to happen and hard to degrade. In this paper, the effects of ozone and electron beam irradiation (EBI) on the degradation of Zearalenone and Ochratoxin A were investigated. After 10 s of 2.0 mg/L ozone treatment, the ZEN content decreased from 50 μg/mL to concentration undetectable. After 12 kGy of EBI, the degradation rate of ZEN was up to 86% and concentration of ZEN within 0.5～5.0 μg/mL had no significant different (P＜0.05), with the degradation of ZEN being faster in acetonitrile than methanol. After 30 …

Go to article

Effects Of 60Co Γ Ray Irradiation On Sterilization And Quality Of Sauced Chicken Claw, Peng Ling, Xu Yuanfang, Zhang Qiling, Zhou Yiji, Mao Qingxiu, Li Wenge Dec 2017

Effects Of 60Co Γ Ray Irradiation On Sterilization And Quality Of Sauced Chicken Claw, Peng Ling, Xu Yuanfang, Zhang Qiling, Zhou Yiji, Mao Qingxiu, Li Wenge

Food and Machinery

The effects of the 60Co γ ray irradiation preservation on the sauced chicken claw were investigated by using different irradiation doses. The relationship was analyzed between the irradiation dose and the total bacterial count, nutrients, the composition of amino acids and fatty acids, AC, POV, TVB-N, nitrite as well as chroma. The results showed that the 60Co γ ray irradiation was effective on sterilization, and while the sample was irradiated at the dose of 4.09 kGy, with the total bacterial count reduced to no more than 4.09 kGy. However, no significant effect of the 60Co γ ray …

Go to article

Biological Characteristics And Pathogenicity Of Botryosphaeria Parva Isolated From ‘Hongyang’ Kiwifruit, He Jingliu, Qin Wen, Liu Xiaoyan, Li Hongyi, Shen Dandan Dec 2017

Biological Characteristics And Pathogenicity Of Botryosphaeria Parva Isolated From ‘Hongyang’ Kiwifruit, He Jingliu, Qin Wen, Liu Xiaoyan, Li Hongyi, Shen Dandan

Food and Machinery

Objects: In order to understand the biological characteristics of Botryosphaeria parva causing soft rot of ‘Hongyang’ kiwifruit. Methods: The mycelial structure was observed by optical microscopy and transmission electron microscopy. The growth curve was established with dry cell weight. Multiple methods could be induced to sporulate. The optimum growth condition of Botryosphaeria parva, and its relationship between lethal temperature and lethal time, as well as its pathogenicity in other fruits were studied. Results: There were branching, diaphragm and intact cell for the mycelium of Botryosphaeria parva. The growth curve of Botryosphaeria parva was divided into three periods, including lag phase …

Go to article

Effect Of Hyaluronic Acid Coating On Fresh Quality Of Crucian Carp (Carassius Auratus) During The Partial-Freezing Storage, Guo Li, Wang Peng, Jiang Zhe, Guo Yanli, Zhou Fengchao, Chai Yunlei Dec 2017

Effect Of Hyaluronic Acid Coating On Fresh Quality Of Crucian Carp (Carassius Auratus) During The Partial-Freezing Storage, Guo Li, Wang Peng, Jiang Zhe, Guo Yanli, Zhou Fengchao, Chai Yunlei

Food and Machinery

The surface of Crucian carp (Carassius auratus) meat was coated with different concentrations of hyaluronic acid (HA) and stored at partial-freezing condition(-3 ℃) to study the effect of hyaluronic acid on its freshness preservation. The total volatile base-nitrogen (TVB-N), pH value, conductivity, thiobarbituric acid (TBA), water holding capacity, color and texture were measured as quality indexes to analyze the change of fish meat. The results showed that the meat quality of Crucian carp decreased slowly by combination of HA coating during the partial-freezing storage. The fish meat with 0.9% HA coating maintained its fresh quality on TVB-N (9.64 mg/100 g), …

Go to article

Effect Of Anti-Aging On Human Epidermal Keratinocyte By Uvb Induced For Green Tea Crude Water Extract, Wang Zhen, Liu Zhonghua, Cai Shuxian, Liu An, Wen Yi Dec 2017

Effect Of Anti-Aging On Human Epidermal Keratinocyte By Uvb Induced For Green Tea Crude Water Extract, Wang Zhen, Liu Zhonghua, Cai Shuxian, Liu An, Wen Yi

Food and Machinery

In this study, anti-aging effects of green tea crude water extract were studied using human epidermal keratinocyte as model which induced by ultraviolet B (UVB). The green tea extract of 0～20 μg/mL was added to DMEM cell culture medium, then cells were induced by radiation of 60 mJ/cm2 UVB. The anti-aging effects were studied by cellular morphology, apoptosis level, cell viability, intracellular antioxidant enzyme activity, intracellular active oxygen cluster (ROS) content, malonaldehyde（MDA）content, cell mitochondrial membrane potential and Na+,K+-ATP enzyme activities. The results showed that the crude extract of green tea could obviously improve cell volume, …

Go to article

Interventional Effects Of Wild Oenanthe Javanica Extract In Guizhou Province In Type 2 Diabetic Mice, Chen Xiaojing, Guo Xiaoqing, Wu Nayiyu, Dai Tiantian Dec 2017

Interventional Effects Of Wild Oenanthe Javanica Extract In Guizhou Province In Type 2 Diabetic Mice, Chen Xiaojing, Guo Xiaoqing, Wu Nayiyu, Dai Tiantian

Food and Machinery

After 5 weeks feeding, the type 2 diabetes mellitus was established by intraperitoneal injection of low-dose STZ (75 mg/kg), to measure and statistically analyz the body weight, blood lipid level, fastig blood glucose level. The extracs of Oenanthe javanica can prevent the increase of blood glucose and the reduction of blood weight in STZ-induced type 2 diabets mice. In the study, the type 2 diabetic mice modle using high glucose and high fat diet and low dose STZ injection occurred at 3weeks, the achievment ratio was 80%, the aqueous extracts composition mold rate was 40%, the alcohol extracts was 60%. …

Go to article

Study On Microwave-Assisted Extraction And Antioxidant Activity Of Total Saponins From Chenopodium Quinoa Peel, Yang Jie, Gao Fengxiang, Yang Min, Bian Hongyu, Zhang Shigang, Zhao Erlao Dec 2017

Study On Microwave-Assisted Extraction And Antioxidant Activity Of Total Saponins From Chenopodium Quinoa Peel, Yang Jie, Gao Fengxiang, Yang Min, Bian Hongyu, Zhang Shigang, Zhao Erlao

Food and Machinery

The microwave-assisted extraction process of total saponin from Chenopodium quinoa peel of quinoa was optimized by one-factor combined response surface method with total saponin yield as index. The antioxidant activities were evaluated by DPPH free radical, hydroxyl radical and ABTS free radical method. The results showed that the ethanol concentration, microwave power and solid-liquid ratio had a significant effect on the total saponin yield. The optimum conditions were ethanol concentration 68%, microwave power 455 W, solid-liquid ratio 132 (g/mL), microwave time 10 min, and extraction times 2 times. The yield of total saponin from Chenopodium quinoa peel was 26.329 mg/g. …

Go to article

Study On Separation And Purification Process Of Fisetin From Cotinus Coggygria Leaves With Polyamide, Xu Na, Xu Kaiyang, Fang Fang, Shu Xiaoshun, Li Chiling Dec 2017

Study On Separation And Purification Process Of Fisetin From Cotinus Coggygria Leaves With Polyamide, Xu Na, Xu Kaiyang, Fang Fang, Shu Xiaoshun, Li Chiling

Food and Machinery

To study the separation and purification of fisetin from Cotinus coggygria leaves with polyamide by using the adsorption rate and elution rate of fisetin as index. The effects of sample flow rate, sample concentration, concentration of eluent and dosage on purification process were investigated from static and dynamic adsorption. The optimum process conditions were as followed: the sample flow rate was 1 mL/min, the sample concentration was 0.535 8 mg/mL, the sample volume was 2 BV, the eluent was 70% ethanol, and the eluent dosage was 4 BV. Conclusion: The crude extract of Cotinus coggygria leaves was refined three times …

Go to article

The Technology Optimization Of The Freezing Microwave Treatment Assisted Extraction Of Phenols From Red Grape Juice, Hong Meiling, Feng Zuoshan, Bai Yujia, Zheng Wancai, Ma Dexiu Dec 2017

The Technology Optimization Of The Freezing Microwave Treatment Assisted Extraction Of Phenols From Red Grape Juice, Hong Meiling, Feng Zuoshan, Bai Yujia, Zheng Wancai, Ma Dexiu

Food and Machinery

In order to promote the rapid dissolution of anthocyanins and other polyphenols in colored grapes into grape juice, taking cabernet sauvignon grape as raw materia, using non thermal processing technology combined with freezing microwave treatment. Based on the single factor experiment, choosing the anthocyanin and polyphenol content of dual response value. Factors such as sample quality, freezing time, freezing temperature, microwave time and microwave power were selected as optimization factors, designed optimization of response surface methodology based on Box-Behnken experimental design principle. The optimum conditions for the simultaneous optimization of the two indicators were as follows: The sample quality was …

Go to article

Optimization On Mixed Fermentation Process With Brown Rice Ferment, Zhang Xupu, Bai Junyan, Liu Tengyun, Wu Rongrong, Cheng Shumei Dec 2017

Optimization On Mixed Fermentation Process With Brown Rice Ferment, Zhang Xupu, Bai Junyan, Liu Tengyun, Wu Rongrong, Cheng Shumei

Food and Machinery

The mixed fermentation process of enzymatic brown rice was optimized by the response surface method. In order to optimize the growth of Saccharomyces cerevisiae and Lactobacillus plantarum in short-term mixed fermented brown rice, the fermentation medium components of the traditional brown rice enzyme were optimized and the interaction between the constituent components was analyzed. Firstly, the main factors were analyzed by pre-experiemntal. The vital influencing factors of biomass, such as honey, brown rice and NaCl, were determined by Plackett-Burman test. The direction and step size of the steepest climbing test are set according to the three important factors effect intensity. …

Go to article

Next Last