Skip to Content

Methods and Protocols, Volume 3, Issue 1

2020 March - 24 articles

Cover Story: Mono- and diferuloyl glycerol are naturally occurring phenylpropenoids that provide ultraviolet and antioxidant protection to pollen, spores, and waxy leaves in plants. These glycerol derivatives have potential use as cosmeceutical and agricultural adjuvants. We have developed a process that uses a continuously fed, packed bed, enzymatic bioreactor employing a commercial lipase to convert ethyl ferulate and vegetable oils to feruloylated vegetable oils. Under optimal conditions, the minor products from this process, mono- and diferuloyl glycerol, can be selectively produced in higher yield. We describe the flash chromatography purification of these natural glycerol derivatives in >10 g yields, an improvement over the milligram to low gram quantities obtained by preparative HPLC and column chromatography methods reported to date.View this paper.
  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
  • You may sign up for email alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.

Articles (24)

  • Protocol
  • Open Access
21 Citations
4,782 Views
13 Pages

In this paper, an analytical protocol was developed for the simultaneous determination of phthalates (di-methyl phthalate DMP, di-ethyl phthalate DEP, di-isobutyl phthalate DiBP, di-n-butyl phthalate DBP, bis-(2-ethylhexyl) phthalate DEHP, di-n-octyl...

  • Article
  • Open Access
5 Citations
3,419 Views
12 Pages

The advent of next-generation sequencing has allowed for higher-throughput determination of which species live within a specific location. Here we establish that three analysis methods for estimating diversity within samples—namely, Operational Taxon...

  • Article
  • Open Access
27 Citations
11,353 Views
11 Pages

The assessment of minimum inhibitory concentration (MIC) is a conventional technique used for the screening of microbial resistance against antibiotics, biocides, and contaminants such as heavy metals. However, as part of our ongoing work, we have ob...

  • Article
  • Open Access
13 Citations
10,631 Views
23 Pages

27 February 2020

The loess-paleosol archive from Mircea Vodă (Romania) represents one of the most studied sections in Europe. We are applying here the current state of the art luminescence dating protocols for revisiting the chronology of this section. Analysis were...

  • Article
  • Open Access
1 Citations
3,286 Views
19 Pages

Sedimentary Dosimetry for the Saradj-Chuko Grotto: A Cave in a Lava Tube in the North-Central Caucasus, Russia

  • Bonnie A. B. Blackwell,
  • Mehak F. Kazi,
  • Clara L. C. Huang,
  • Ekaterina V. Doronicheva,
  • Liubov V. Golovanova,
  • Vladimir B. Doronichev,
  • Impreet K. C. Singh and
  • Joel I. B. Blickstein

26 February 2020

Karst caves host most European Paleolithic sites. Near the Eurasian-Arabian Plate convergence in the Caucasus’ Lower Chegem Formation, Saradj-Chuko Grotto (SCG), a lava tube, contains 16 geoarchaeologically distinct horizons yielding modern to...

  • Protocol
  • Open Access
9 Citations
6,604 Views
8 Pages

Using a Model of Germ-Free Animals to Study the Impact of Gut Microbiome in Research: A Step by Step Sterility Setting and Management

  • Odile Gabay,
  • Jonathan Vicenty,
  • Dylan Smith,
  • Linda Tiffany,
  • Jill Ascher,
  • Tina Curry,
  • John Dennis and
  • Kathleen A. Clouse

22 February 2020

The particularly unique composition of the gut microbiota has the potential to influence the health or disease status of animal and human hosts. Altering the homeostasis of the host-bacteria could lead to changes in gut flora that result in disease o...

  • Protocol
  • Open Access
15 Citations
5,250 Views
20 Pages

20 February 2020

Dating fluvial terraces has long been a challenge for geologists and geomorphologists, because terrace straths and treads are not usually directly dated. In this study, the formation ages of the Yellow River terraces in the Baode area in China were d...

  • Protocol
  • Open Access
2 Citations
4,303 Views
7 Pages

Antimicrobial Lock Therapy in Clinical Practice: A Scoping Review Protocol

  • Aniello Alfieri,
  • Sveva Di Franco,
  • Maria Beatrice Passavanti,
  • Maria Caterina Pace,
  • Agata Stanga,
  • Vittorio Simeon,
  • Paolo Chiodini,
  • Sebastiano Leone,
  • Vettakkara Kandy Muhammed Niyas and
  • Marco Fiore

12 February 2020

Our objective is to review the scientific literature on the use of antimicrobial lock therapy (ALT). To achieve this result, our scoping review will address the following seven key questions: (1) Who are the patients who will benefit from this techni...

  • Protocol
  • Open Access
7 Citations
3,509 Views
8 Pages

A Fast and Accurate Method to Identify and Quantify Enzymes in Brush-Border Membranes: In Situ Hydrolysis Followed by Nano LC-MS/MS

  • Antonio Brun,
  • Melisa E. Magallanes,
  • Carlos Martínez del Rio,
  • Gregory A. Barrett-Wilt,
  • William H. Karasov and
  • Enrique Caviedes-Vidal

10 February 2020

A simple method for the identification of brush-border membrane α-glucosidases is described. The proteins were first solubilized and separated in a gel under native, non-denaturing, conditions. The gel was then incubated in substrate solutions...

  • Article
  • Open Access
6 Citations
4,698 Views
27 Pages

Analysis and Model of Cortical Slow Waves Acquired with Optical Techniques

  • Marco Celotto,
  • Chiara De Luca,
  • Paolo Muratore,
  • Francesco Resta,
  • Anna Letizia Allegra Mascaro,
  • Francesco Saverio Pavone,
  • Giulia De Bonis and
  • Pier Stanislao Paolucci

31 January 2020

Slow waves (SWs) are spatio-temporal patterns of cortical activity that occur both during natural sleep and anesthesia and are preserved across species. Even though electrophysiological recordings have been largely used to characterize brain states,...

  • Letter
  • Open Access
1 Citations
4,470 Views
7 Pages

ESR and Radiocarbon Dating of Gut Strings from Early Plucked Instruments

  • Sumiko Tsukamoto,
  • Taro Takeuchi,
  • Atsushi Tani,
  • Yosuke Miyairi and
  • Yusuke Yokoyama

28 January 2020

Early European plucked instruments have recently experienced a great revival, but a few aspects remain unknown (e.g., the gauge of gut strings). Here we report, for the first time, that the electron spin resonance (ESR) signal intensity of oxidized i...

  • Protocol
  • Open Access
2 Citations
4,001 Views
13 Pages

24 January 2020

Monitoring movements of larval Drosophila with electrical detection allows one to record the behaviors without the use of lights and cameras. This is a suitable technique when studying the use of light-sensitive proteins in optogenetic studies. Elect...

  • Protocol
  • Open Access
1 Citations
6,475 Views
12 Pages

23 January 2020

Bioluminescent tumor cell lines are used extensively in vivo to monitor tumor growth and metastasis but rarely used in vitro to follow tumor cell behavior. Tumor cell migration is frequently studied in vitro using transwell assays, however, current m...

  • Protocol
  • Open Access
1 Citations
4,246 Views
7 Pages

A Simple and Reliable Protocol for the Preparation and Culturing of Fresh Surgically Resected Human Glioblastoma Tissue

  • Liyen Katrina Kan,
  • Katharine J Drummond,
  • Martin Hunn,
  • David A Williams,
  • Terence J O’Brien and
  • Mastura Monif

22 January 2020

Glioblastoma is a heterogeneous glial cell malignancy with extremely high morbidity and mortality. Current treatment is limited and provide minimal therapeutic efficacy. Previous studies were reliant on cell lines that do not accurately reflect the h...

  • Article
  • Open Access
7 Citations
4,384 Views
17 Pages

Ethyl ferulate was transesterified with Enova Oil (a soy-based vegetable oil containing 80–85% diacylglycerol) using Novozym 435 at 60 °C. The resultant feruloylated vegetable oil reaction product produced a precipitate (96.4 g, 4.02 wt%) a...

  • Protocol
  • Open Access
6 Citations
3,808 Views
7 Pages

Beyond Oncology: Question Prompt Lists in Healthcare—A Scoping Review Protocol

  • Matthias Lukasczik,
  • Christian Gerlich,
  • Hans Dieter Wolf and
  • Heiner Vogel

Question prompt lists (QPL) are an instrument to promote patient participation in medical encounters by providing a set of questions patients can use during consultations. QPL have predominantly been examined in oncology. Less is known about their us...

  • Review
  • Open Access
65 Citations
6,065 Views
19 Pages

Compared to quartz, the infrared stimulated luminescence (IRSL) of K-feldspar saturates at higher dose, which has great potential for extending the dating limit. However, dating applications with K-feldspar has been hampered due to anomalous fading o...

  • Article
  • Open Access
20 Citations
9,749 Views
13 Pages

Optically Stimulated Luminescence Sensitivity of Quartz for Provenance Analysis

  • André Oliveira Sawakuchi,
  • Fernanda Costa Gonçalves Rodrigues,
  • Thays Desiree Mineli,
  • Vinícius Ribau Mendes,
  • Dayane Batista Melo,
  • Cristiano Mazur Chiessi and
  • Paulo César Fonseca Giannini

Finding the source or provenance of quartz grains occurring in a specific location allows us to constrain their transport pathway, which is crucial information to solve diverse problems in geosciences and related fields. The optically stimulated lumi...

  • Protocol
  • Open Access
6 Citations
6,449 Views
7 Pages

The colorful wings of butterflies are emerging as model systems for evolutionary and developmental studies. Some of these studies focus on localizing gene transcripts and proteins in wings at the larval and pupal stages using techniques such as immun...

  • Protocol
  • Open Access
5 Citations
4,874 Views
5 Pages

Female cyclists are prone to a variety of injuries and illnesses that occur as a result of prolonged contact with a bicycle saddle. Saddle sores are a range of skin ailments on the buttocks, genitals and inner thigh that result from a combination of...

  • Article
  • Open Access
3 Citations
2,831 Views
10 Pages

Estimation of the Mutagenic Potential of 8-Oxog in Nuclear Extracts of Mouse Cells Using the “Framed Mirror” Method

  • Leonid V. Gening,
  • Alexandr A. Volodin,
  • Konstantin Y. Kazachenko,
  • Irina V. Makarova and
  • Vyacheslav Z. Tarantul

We propose an improved earlier described “mirror” method for detecting in cell nuclear extracts mutations that arise in DNA during its replication due to the misincorporation of deoxyadenosine-5′-monophosphate (dAMP) opposite 7,8-di...

  • Protocol
  • Open Access
22 Citations
4,293 Views
15 Pages

26 December 2019

We studied the characteristics of the optically stimulated luminescence (OSL) signal of single-grain quartz from three sites in China, Italy, and Libya, including the brightness, decay curve and dose response curve (DRC) shapes, recuperation, and rep...

  • Article
  • Open Access
10 Citations
6,198 Views
19 Pages

Cell-Type-Specific Quantification of a Scaffold-Based 3D Liver Co-Culture

  • Marc Ruoß,
  • Vanessa Kieber,
  • Silas Rebholz,
  • Caren Linnemann,
  • Helen Rinderknecht,
  • Victor Häussling,
  • Marina Häcker,
  • Leon H. H. Olde Damink,
  • Sabrina Ehnert and
  • Andreas K. Nussler

23 December 2019

In order to increase the metabolic activity of human hepatocytes and liver cancer cell lines, many approaches have been reported in recent years. The metabolic activity could be increased mainly by cultivating the cells in 3D systems or co-cultures (...

Get Alerted

Add your email address to receive forthcoming issues of this journal.

XFacebookLinkedIn
Methods Protoc. - ISSN 2409-9279