Pectinase and Naringinase Help to Improve Juice Production and Quality from Pummelo (Citrus grandis) Fruit

Hui Ni,Yuan Fan Yang,Feng Chen,Hai Feng Ji,Hu Yang,Wu Ling,Hui Nong Cai 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.3

Pectinase and naringinase were investigated forimproving the production of pummelo juice by increasingthe juice yield and eliminating juice bitterness. Comparedto a control, the enzymatic treatment significantly (p<0.05)increased the juice yield, soluble pectin and total solublesolid (TSS) contents, and the clarity, while decreasing theconcentrations of the bitter chemicals naringin, limonin,and nomilin. A combined processing treatment of peelingand enzymatic hydrolyses using 5U/g of pectinase and 0.4 U/gof naringinase at 50oC for 60 min resulted in a juice yieldof 42.3%, a TSS content of 11.4oBx, a titrable acidity (TA)of 0.96%, a vitamin C concentration of 38.4 mg/100 mL,and concentrations of naringin, limonin, and nomilin of42.4 μg/mL, 33.5 μg/mL, and 13.3 μg/mL, respectively. The enzymatic method was effective and practical forproduction of high quantity pummelo juice.

Development and Evaluation of Simultaneous Quantification of Naringin, Prunin, Naringenin, and Limonin in Citrus Juice

Hui Ni,Su Fang Zhang,Qiu Feng Gao,Yang Hu,Ze Dong Jiang,Feng Chen 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.4

Quantification of limonin, naringin, prunin, and naringenin is an important approach for monitoring of debittering processes of citrus products. Naringin and limonin have different polarity and solubility values, causing difficulty in simultaneous extraction and quantification. A procedure combining HPLC and solid-phase extraction was developed to simultaneously quantify these analytes in citrus juice. Analytes exhibited calibration curves of good linearity along with low limit of detection and limit of quantification values. Naringin, prunin, naringenin, and limonin exhibited respective recovery values of 92.2-100.6, 92.0-97.3, 98.1-102.2, and 102.4-103.9%, respectively. Relative standard deviations were lower than 5%. For analysis of naringin, prunin, naringenin, and limonin in citrus juices, the simultaneous method displayed analytical results identical to traditional respective quantification methods. The simultaneous method is highly effective for monitoring naringin, prunin, naringenin, and limonin levels in citrus juice.

Effects of two enzyme extracts of Aspergillus niger on green tea aromas

Hui Ni,Sun Hao,Fuping Zheng,Liangzhen Zhang,Bolim Lee,Yaqi Wang,Feng Chen 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.3

Green tea was investigated in terms of its aroma changes induced by two enzyme extracts of Aspergillus niger, i.e., crude enzyme extracted from fermentation using tea stalk medium (CETSM) and crude enzyme yielded in potato dextrose medium. The result showed that the former had significant effects on sensory indexes and volatile constituents, with significant increases in toasty and mushroom notes, while the latter had little influence on the aforementioned indexes. In addition, the volatile constituents were significantly affected; in particular, the contents of cis-3-hexenol, 1-octen-3-ol, eucalyptol, hexanol, and benzaldehyde increased. Furthermore, gas chromatography– olfactometry (GC–O) analysis showed that an increase in 1-octen-3-ol strengthened the mushroom note. These results indicate that CETSM contains some novel enzymes that can modify the aroma profile of green tea.This study also provides valuable information and suggestions to use fermented enzymes to modify food aromas.

Intraday Pattern in Bid-Ask Spreads and Its Power-Law Relaxation for Chinese A-Share Stocks

Xiao-Hui Ni,Wei-Xing Zhou 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.2

We use high-frequency data of 1364 Chinese A-share stocks traded on the Shanghai Stock Exchange and Shenzhen Stock Exchange to investigate the intraday patterns in the bid-ask spreads. The daily periodicity in the spread time series is confirmed by using a Lomb analysis and the intraday bid-ask spreads are found to exhibit an L-shaped pattern with an idiosyncratic fine structure. The intraday spread of individual stocks relaxes as a power law within the first hour of the continuous double auction from 9:30 AM to 10:30 AM with exponents βSHSE = 0.19 0.067 for the Shanghai market and βSZSE = 0.18 0.069 for the Shenzhen market. The power-law relaxation exponent β of individual stocks is roughly normally distributed. There is evidence showing that the accumulation of information widening the spread is an endogenous process.

Effect of cation substitution on the pseudocapacitive performance of spinel cobaltite MCo₂O₄ (M = Mn, Ni, Cu, and Co)

Liu, Shude,Ni, Dixing,Li, Hai-Feng,Hui, Kwun Nam,Ouyang, Chu-Ying,Jun, Seong Chan The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.23

<P>Cation substitution is a promising strategy for modulating the structural properties and optimizing the electrochemical performance of spinel cobalt oxide (Co3O4); however, the underlying mechanism of this action induced by different cation substitutions has not yet been clearly addressed. Herein, a systematic investigation is performed to elucidate the effect of cation substitution on the pseudocapacitive performance of spinel cobaltite (MCo2O4; M = Mn, Ni, Cu, and Co) mesoporous nanowires grown on nickel foam (NF). Theoretical and experimental analyses reveal that the substitution of Co by transition metals (<I>i.e.</I>, Mn, Ni, and Cu) in the lattice of Co3O4 can simultaneously improve charge transfer and ion diffusion, thereby exhibiting enhanced electrochemical properties. Herein, as a representative example, MnCo2O4 achieves a high specific capacitance of 2146 F g<SUP>−1</SUP> at a current density of 1 A g<SUP>−1</SUP>, while 92.1% of its initial capacitance is retained after 5000 cycles. An asymmetric supercapacitor with MnCo2O4 as the positive material and activated carbon (AC) as the negative material delivers a high energy density of 56.1 W h kg<SUP>−1</SUP> at a power density of 800 W kg<SUP>−1</SUP>, and a favorable energy density of 29.3 W h kg<SUP>−1</SUP> at a power density as high as 8000 W kg<SUP>−1</SUP>.</P>

Etoposide-Cisplatin Alternating with Vinorelbine-Cisplatin Versus Etoposide-Cisplatin Alone in Patients with Extensive Disease Combined with Small Cell Lung Cancer

Zhang, Jie,Qi, Hui-Wei,Zheng, Hui,Chen, Mo,Zhu, Jun,Xie, Hui-Kang,Ni, Jian,Xu, Jian-Fang,Zhou, Cai-Cun Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.10

Background: The aim of this study was to evaluate the efficacy of alternating etoposide-cisplatin and vinorelbine-cisplatin (EP-NP) compared with an etoposide-cisplatin (EP) regimen for advanced combined small cell carcinomas. Materials and Methods: Histologically confirmed combined small cell carcinoma patients who met the inclusion criteria were randomly assigned (1:1) into either the EP-NP setting (group A) or the EP setting (group B). The primary endpoint was progression-free survival in patients who received at least one dose of treatment. Results: Eighty-two patients entered into this trial, 42 in group A and 40 in group B. The objective response rates in group A and group B were 42.9% and 32.5%, respectively (p=0.334). Survival analysis showed that median progression-free survival was 6.1 months in group A, which was significantly longer than the 4.1 months in group B (p=0.041). However, as to overall survival, no significant difference was found between the two groups (11.0 vs 10.1 months in groups A and B, respectively, p=0.545). No unexpected side effects were observed in either group. Conclusions: The EP-NP regimen for combined small cell carcinomas prolonged progressio-nfree survival compared with the EP regimen. Further clinical investigations are warranted.

상악에서 발생한 법랑모세포섬유치아종

박원홍,임원봉,김지선,김상우,Zheng Hui,Kou Ni,전상미,박지일,최홍란,김옥준 대한구강악안면병리학회 2012 대한구강악안면병리학회지 Vol.36 No.6

Ameloblastic fibro-odontoma has been defined as a lesion similar to ameloblastic fibroma by WHO, as it shows inductive changes which forms enamel and dentin. Ameloblastic fibro-odontoma is a very rare mixed dentition tumor in children, and the symptom shows indolent edema in maxillary and mandibular molar area. The prevalence is two times higher in male than in female, and two times higher in maxilla than in mandible. Radiologically, it shows clear border and characteristics of both fibroma and odontoma histologically. This review reports a case that a 4-year old female visited in dental clinic of this school for edema as chief complaint in Feb, 2012. Emergency surgical curettage was performed right after initial diagnosis as odontoma, then confirmed diagnosis as Ameloblastic fibro- odontoma after biopsy. Currently, after 6 month, no sign of recurrence can be seen. Ameloblastic fibro-odontoma is very rare mixed dentition tumor. Moreover, as it is the case of female maxilla, this case is worth of publishing. Furthermore, accurate diagnosis of Ameloblastic fibro-odontoma is difficult. This review is published for accurate diagnosis through differential diagnosis of several important mixed dentition tumors.

A novel and effective approach to enhance the interfacial interactions of meta-aramid fibers

Hui Zhang,Xiaoyun Du,Jiawei Liu,YunHong Bai,Jingyi Nie,Jiaojun Tan,Zhibin He,Meiyun Zhang,Jinbao Li,Yonghao Ni 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-

Meta-aramid paper exhibits some unique properties, including high temperature resistance, electricalinsulation. However, due to the inherent chemical inertness of aramid fibers, the interfacial bondingbetween fibers is weak, which negatively affect the properties of aramid paper. Herein, we report a simple,effective and scalable process for substantially improving the interfacial bonding between aramidfibers, thus, mechanical and insulating properties of the meta-aramid composite paper, and it wasachieved by surface coating of aramid paper with meta-aramid stock solution that contains N, N dimethylacetamide(DMAc)-CaCl2 and high molecular weight poly (m-phenylene isophthalamide) polymers. Results show that the tensile strength, modulus, internal bond strength and tearing index of the resultantall-PMIA paper increased by 83 %, 58 %, 173 % and 89 %, respectively, in comparison with those of the control. The breakdown strength of the improved aramid paper is 190 % higher than that of the control paper,attaining 26.46 KV/mm. This work provides a simple, economical, efficient, and scalable method toimprove the overall performance of meta-aramid paper, which has great potential to be implementedat the industrial scale.

Damping enhancement of the inerter on the viscous damper in mitigating cable vibrations

Hui Gao,Hao Wang,Jian Li,Zhi Hao Wang,Youhao Ni,Ruijun Liang 국제구조공학회 2021 Smart Structures and Systems, An International Jou Vol.28 No.1

This paper systematically investigates the effect of the inerter on the damping enhancement of a cable with a viscous damper (VD) installed close to the cable end. Three cases are considered, including the inerter installed parallel with the VD (PVID), the inerter placed in series with the VD (SVID), and the inerter installed at a higher location of the VD (HVID). The asymptotic solutions of the three cases are derived, which can predict the cable modal damping ratio when the inerter and the VD cause minimal perturbation in the undamped frequency of the cable. The effect of the inerter on the modal behavior of the cable with the VD is investigated. Based on the constrained static output LQR method, the effects of the inerter on the damping enhancement of the VD in mitigating cable multi-mode vibrations are further evaluated. The results show that the inerter can improve the control performance of the VD when the inertance is less than the optimum value. Further increasing the inertance beyond the optimum value, the optimum modal damping ratio of the cable decreases, and mode crossover is observed for the cable with PVID and HVID. Compared with the case where the VD and the inerter are located at the same location, the case of the HVID is more effective in mitigating cable multi-mode vibrations.

성학대를 내용으로 한 그림책 읽기 과정에서 나타난 만 5세 유아의 반응 분석

천희영(Hui Young Chun),이귀숙(Gui Sook Lee),신세니(Se Ni Shin) 한국아동학회 2012 아동학회지 Vol.33 No.5

The purpose of this study was to analyze 5-year-old children`s responses in the process of reading picturebooks on sexual abuse and to explore the educational implications of the results. 42 five-yearold children and 2 of their teachers participated as subjects in the study. Data was collected by means of observation, a diary record of the teacher`s class, and an interview with teachers about children`s responses in the process of reading picturebooks on sexual abuse during the free choice activities, and group activities in J and K daycare centers in Busan, Korea from July to September. The results were as follows:the analysis identified three patterns of responses; consistent responses, awkward responses, and confused and frightened responses. These result imply that selecting picturebooks for sexual abuse preventive education programs for young children needs to be given careful consideration. The importance of the teacher`s reading skills and sociocultural cognition regarding sexuality in general were also discussed.