Liquor Research Articles

A Dual-Mode Triboelectric Nanogenerator for Efficiently Harvesting Droplet Energy.

Triboelectric nanogenerator (TENG) is a promising solution to harvest the low-frequency, low-actuation-force, and high-entropy droplet energy. Conventional attempts mainly focus on maximizing electrostatic energy harvest on the liquid-solid surface, but enormous kinetic energy of droplet hitting the substrate is directly dissipated, limiting the output performance. Here, a dual-mode TENG (DM-TENG) is proposed to efficiently harvest both electrostatic energy at liquid-solid surface from a droplet TENG (D-TENG) and elastic potential energy of the vibrated cantilever from a contact-separation TENG (CS-TENG). Triggered by small droplets, the flexible cantilever beam, rather than conventional stiff ones, can easily vibrate multiple times with large amplitude, enabling frequency multiplication of CS-TENG and producing amplified output charges. Combining with the top electrode design to sufficiently utilize charges at liquid-solid interface, a record-high output charge of 158 nC is realized by single droplet. The energy conversion efficiency of DM-TENG is 2.66-fold of D-TENG. An array system with the specially designed power management circuit is also demonstrated for building self-powered system, offering promising applications for efficiently harvesting raindrop energy.

A Novel IoT-Based Performance Testing Method and System for Fire Pumps

Fire pumps are the key components of water supply in a firefighting system. At present, there is a lack of fire water pump testing methods that intelligently detect faulty states. Existing testing approaches require manual operation, which leads to low efficiency and accuracy. To solve the issue, this paper presents an automatic and smart testing approach that acquires measurements of the flow, pressure, shaft power and efficiency from smart sensors via an IoT network, so that performance curves are obtained in the testing processes. An IoT platform is developed for data conversion, transmission and storage. The Discrete Fréchet Distance is applied to evaluate the similarities between the acquired performance curves and metric performance curves, to determine the working condition of the fire pump. The weights of the measurement dimensions for distance computation are optimized by the Genetic Algorithm to improve the distinction between normal and faulty performance curves. Finally, the experimental results show that the proposed method can completely detect faulty states and prove its high practicality for real firefighting systems.

CRISPRi-induced transcriptional regulation of IAH1 gene and its influence on volatile compounds profile in Kluyveromyces marxianus DU3.

Mezcal is a traditional Mexican distilled beverage, known for its marked organoleptic profile, which is influenced by several factors, such as the fermentation process, where a wide variety of microorganisms are present. Kluyveromyces marxianus is one of the main yeasts isolated from mezcal fermentations and has been associated with ester synthesis, contributing to the flavors and aromas of the beverage. In this study, we employed CRISPR interference (CRISPRi) technology, using dCas9 fused to the Mxi1 repressor factor domain, to down-regulate the expression of the IAH1 gene, encoding for an isoamyl acetate-hydrolyzing esterase, in K. marxianus strain DU3. The constructed CRISPRi plasmid successfully targeted the IAH1 gene, allowing for specific gene expression modulation. Through gene expression analysis, we assessed the impact of IAH1 down-regulation on the metabolic profile of volatile compounds. We also measured the expression of other genes involved in volatile compound biosynthesis, including ATF1, EAT1, ADH1, and ZWF1 by RT-qPCR. Results demonstrated successful down-regulation of IAH1 expression in K. marxianus strain DU3 using the CRISPRi system. The modulation of IAH1 gene expression resulted in alterations in the production of volatile compounds, specifically ethyl acetate, which are important contributors to the beverage's aroma. Changes in the expression levels of other genes involved in ester biosynthesis, suggestingthat the knockdown of IAH1 may generate intracellular alterations in the balance of these metabolites, triggering a regulatory response. The application of CRISPRi technology in K. marxianus opens the possibility of targeted modulation of gene expression, metabolic engineering strategies, and synthetic biology in this yeast strain.

High-Resolution Mass Spectrometry-Based Chemical Fingerprinting of Baijiu, a Traditional Chinese Liquor.

Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry, coupled with electrospray ionization (ESI) or atmospheric-pressure photoionization (APPI), was employed for chemical fingerprinting of baijiu, a traditional Chinese liquor. Baijiu is the most consumed distilled alcoholic beverage globally, with over 10 billion liters sold annually. It is a white (transparent) spirit that exhibits similarities to dark spirits such as whisky or rum in terms of aroma and mouthfeel. In this study, direct-infusion FT-ICR mass spectrometry was used to analyze 10 commercially available baijiu liquors, enabling the examination of both volatile and nonvolatile constituents without the need for tedious sample extractions or compound derivatizations. The chemical fingerprints obtained by FT-ICR MS revealed substantial compositional diversity among different baijiu liquors, reflecting variations in the raw materials and production methods. The main compounds identified included a variety of acids, esters, aldehydes, lactones, terpenes, and phenolic compounds. The use of ESI and APPI provided complementary compositional information; while ESI demonstrated greater selectivity toward polar, aliphatic sample constituents, APPI also ionized semipolar and nonpolar (aromatic) ones.

In Case You Haven't Heard…

Maybe they should be called the sloshed islands. The bad news for the tourist industry of the spice islands, a popular tourist retreat in Zanzibar, is an alcohol shortage. Beer prices went up 100%, thanks to a supply chain disruption. The tourism minister resigned recently, possibly due to problems with alcohol supplies. The vast majority of foreign revenue for the African travel destination comes from tourism. But according to a report from the BBC, some “tourist hotels along the Matemwa beaches in the north of Zanzibar's main island are only serving soft drinks, and people in that area say they have to go to the main city, Stone Town, for alcohol.” But in fact, even though it plies tourists with alcohol, Zanzibar — where most people are Muslim — bans the manufacturing of alcohol locally. One American tourist, who did not want to be named, said, “I love Zanzibar and its beaches. The people are amazing and the only challenge I feel now is I can't get hard liquor. I want to have spirits, or even whisky, but nothing is found in the hotel; they instead advised me to order it from Stone Town.”

Enhancing microbiologically influenced corrosion protection of carbon steels with silanized epoxy-biocide hybrid coatings.

Microbial biofilms and microbiologically influenced corrosion (MIC) pose serious problems in pipelines transporting freshwater from the reservoir to service water systems and fire water systems of power reactors. The present work aims to design a silane-based epoxy-biocide hybrid coating along with antibacterial compounds on carbon steels (CS) for controlling the MIC of pipeline materials. The optimal inhibitory concentrations of biocides are identified and a robust protocol has been developed to prepare epoxy-based coatings impregnated with three biocides (25ppm each of benzalkonium chloride, bronopol, and isothiazoline). Microbiological and accelerated corrosion studies were carried out by exposing the coated CS specimens to the enriched freshwater bacterial culture (FWC). As compared to the impedance value of 102 Ohms for the polished CS, the values were 106 and 105 Ohms, respectively, for epoxy-coated specimens (CSE) and epoxy-coated specimens impregnated with biocides (CSEB). The corrosion protection efficiency of CSE and CSEB coated specimens exposed to FWC was 99.9% and 98.1%, respectively. Confocal microscopic analysis showed the average biomass thickness was 51.3 ± 0.6µm and 24.4 ± 0.5µm, respectively, for CSE and CSEB specimens in comparison to 94.1 ± 0.2µm on CS specimens. The improved anticorrosion and antifouling behaviors observed in the CSEB specimens suggest that the new coating strategy has the potential for the development of multifunctional hybrid epoxy coatings for pipeline materials to mitigate MIC-related issues in water-transporting pipeline systems.

Introducing Leather in Wearable Triboelectric Generators

Leather is a well-known material with a wide range of applications in clothing, footwear, protection, accessories and furnishing. Further on it is reported in only a few triboelectric series tables, as a material which has an intensive tendency to become positive. In the hereby study, its triboelectric potentials are examined to be used as part of a triboelectric generator which would be part of clothing. Natural leather from cows and sheep was used. Samples of 25 cm2 area were cut and examined together with Polytetrafluoroethylene (PTFE) material, using a prototype measuring triboelectric generator device under a force of 0.5 N. The highest Vpp values were given by the front (grain) side of cow and sheep thin samples, reaching a mean Vpp of 1293 and 1233 mV respectively. In all the tests, the front side of the samples performed better than their back (flesh) as a triboelectric surface. Additionally, the thin samples performed better than the thick ones and the less stiff samples performed better than the stiff ones. The outcoming voltages seem promising in comparison to other ordinary natural materials previously studied. The results point to the potential of leather usage in wearable triboelectric generators.

Charentaise distillation of cognac. Part I: Behavior of aroma compounds

The Charentaise distillation plays an essential role in designing cognac aroma by extracting and selectively concentrating aroma compounds from the wine along with ethanol, in addition to promoting compound formation or degradation through different chemical reactions. This traditional mode of distillation still relies heavily on empirical knowledge and the impact of its different parameters on the composition of cognac is not fully elucidated. In this context, this study aimed to broaden the current knowledge on the behavior of aroma compounds throughout the two steps of the Charentaise distillation and to investigate the formation of aroma compounds during the operation, an aspect which is seldom considered. The concentration profiles of 62 aroma compounds were represented over time for a wine and a brouillis distillation in usual scale (25 hL) with recycling. A classification system was then proposed to group compounds based on their volatilities at different ethanol concentrations in the boiling liquid, their concentration profiles and their chemical properties. This could help identify how chemical characteristics of aroma compounds affect their volatilities in hydroalcoholic media during distillation. In addition, several compounds appear to be formed during distillation, most of which are terpenes, norisoprenoids and aldehydes. Finally, to highlight the importance of different compounds to the aroma of freshly distilled cognac, their odor activity values (OAV) in the heart fraction were estimated, revealing isobutanol and (E)-ß-damascenone to be the most odorant compounds. These results provided additional elements of understanding for different aspects of the Charentaise distillation for the production of cognac, several of which can be transposed, at least in part, to different modes of distillation pertaining to other distilled beverages.

Construction of water supply and drainage fire water system of construction project under BIM technology

Abstract The drainage and firefighting water systems are critical components of construction projects. Due to the complexity and multitude of piping systems, issues such as impractical space arrangements and pipeline collisions can arise during construction. BIM technology enhances the design quality and efficiency of these systems through parametric integration of building information and three-dimensional visualization modeling. Based on this research background, this paper firstly constructs the model of water supply and drainage and fire fighting water based on BIM technology, plays the scalability of Revit, carries out the secondary development of Revit, and completes the program development of water supply and drainage, and fire fighting water pipeline height detection and pipeline automatic avoidance function by combining with C# language. This paper takes a building in the Shangcheng District of Hangzhou City to conduct empirical research, and the results show that collision detection through BIM technology saves a lot of time, improves efficiency significantly, and has higher detection accuracy. In addition, this paper utilizes a comprehensive evaluation system to objectively evaluate the effects of drainage and firefighting water construction in construction projects based on BIM technology. This study uses BIM technology to realize further development and exploration in the process of building drainage and fire water construction, reduce the conflict points in the process of drainage and fire water design, and improve the detection efficiency and accuracy in the design process.

Electroanalytical characterization of clozapine at the electrified liquid-liquid interface and its detection in soft and hard drinks.

Clozapine (CZ) is a prescribed benzodiazepine psychiatric drug that is often possessed as an illicit drug and is associated with drug-facilitated sexual assaults (DFSA) due to its strong sedative capabilities. Hence, we propose an electrified liquid-liquid interface (eLLI) based transducing element as an alternative electroanalytical platform for rapid screening of CZ in soft and hard drinks which is habitually associated with DFSA crimes. First, molecular partitioning and the effect of chemical composition, pH, and the presence of ethanol in the biphasic configuration of the aqueous phase on the interfacial behaviour and analytical performance of the CZ at the eLLI have been investigated with voltammetry. Next, the electrochemical profiles of various soft and hard drinks were studied at the eLLI. The eLLI-based CZ sensor has shown a broad dynamic range (15-150 μM), lower detection limits (1μM), and adequate reliability towards rapid CZ screening in spiked soft and hard drink samples with reference to the standard chromatographic analysis.

Formalization of regulatory information (using the example of SR 30.13330.2020 Internal water supply and sewerage of building)

The article is devoted to the development of databases of the factographic reference system. The method of formalization of normative information is proposed. The classification of tables into “descriptive” and “prescriptive” has been introduced. The article describes an approach to the formalization of “prescriptive” tables, all the parameters of which are divided into two groups – quantitative and qualitative. SR 30.13330.2020 Internal water supply and sewerage of buildings Chapter 7 “Fire-fighting water supply” and Appendix J “Water consumption for firefighting” were chosen as the object of formalization. The data structure required to determine the internal fire extinguishing device, the number of fire cranes and water consumption is presented. A fragment of the database “Water consumption” and screen forms of the developed application “Water consumption for firefighting” are presented. The input data for the application is the type of building and the parameters depending on the type of building, the result is information about the need for fire-fighting plumbing and a link to the document. The presented example of expanding the database with information from SR 486.1311500.2020 indicates the flexibility of the proposed approach.

Spatial Distribution of Petrol Filling Stations in Yakurr Lga of Cross River State-Nigeria

Petrol filling stations are vital but their location can also pose safety risks hence, there is need to adhere to regulatory guidelines. This study utilizes Geographic Information System (GIS) tools to analyze the placement of fuel stations in Yakurr local government areas of Cross River State. Quantitative research method was employed for the study. This involved acquiring primary and secondary data. Petrol filling stations coordinates were captured using Garmin 76CSX Handheld GPS, the attributes data such as name of business/roads were recorded, distance between filling stations and setback were measured directly on the ArcGIS 10.3. The results of the analysis showed that the stations are concentrated along Calabar-Ikom Highway. Furthermore, (54.17%) petrol filling stations complied with the 400M spacing rule, while 46.83% did not. 41.67% kept the minimum setback of 15M, while 58.33% of the filling stations have a setback of less than 15M. Many lacked essential firefighting equipment: fire extinguishers, sand buckets and water. In conclusion, the study suggest that regulatory bodies should be more proactive and effective by conducting frequent inspections of petrol filling stations to ensure compliance with recommended regulatory guidelines.

Safety evaluation of an extension of use of the food enzyme containing cellulase, endo-1,3(4)-β-glucanase and endo-1,4-β-xylanase from the non-genetically modified Trichoderma reesei strain AR-256.

The food enzyme containing cellulase (EC 3.2.1.4), endo-1,3(4)-β-glucanase (EC 3.2.1.6) and endo-1,4-β-xylanase (EC 3.2.1.8) is produced with the non-genetically modified Trichoderma reesei strain AR-256 by AB-Enzymes GmbH. A safety evaluation of this food enzyme was made previously, in which EFSA concluded that this food enzyme did not give rise to safety concerns when used in seven food manufacturing processes. Subsequently, the applicant requested to extend its use to include two additional processes. In this assessment, EFSA updated the safety evaluation of this food enzyme when used in a total of nine food manufacturing processes: processing of cereals and other grains for the production of 1) baked products, 2) cereal-based products other than baked, 3) brewed products, 4) starch and gluten fractions, 5) distilled alcohol; processing of fruits and vegetables for the production of 6) wine and wine vinegar, 7) juices, 8) fruit and vegetable products other than juices and 9) fruit-derived distilled alcoholic beverages other than from grape. As the food enzyme-total organic solids (TOS) is removed from or not carried into the final foods in three food manufacturing processes, the dietary exposure to the food enzyme-TOS was estimated only for the remaining six processes. It was up to 4.049 mg TOS/kg body weight (bw) per day in European populations. Using the no observed adverse effect level (NOAEL) reported in the previous opinion (939 mg TOS/kg bw per day), the Panel derived a revised margin of exposure of at least 232. Based on the revised exposure calculation and the outcome of the previous evaluation, the Panel concluded that this food enzyme does not give rise to safety concerns under the revised intended conditions of use.

From waste to protein: a new strategy of converting composted distilled grain wastes into animal feed.

Distilled grain waste (DGW) is rich in nutrients and can be a potential resource as animal feed. However, DGW contains as much as 14% lignin, dramatically reducing the feeding value. White-rot fungi such as Pleurotus ostreatus could preferentially degrade lignin with high efficiency. However, lignin derivatives generated during alcohol distillation inhibit P. ostreatus growth. Thus, finding a new strategy to adjust the DGW properties to facilitate P. ostreatus growth is critical for animal feed preparation and DGW recycling. In this study, three dominant indigenous bacteria, including Sphingobacterium thermophilum X1, Pseudoxanthomonas byssovorax X3, and Bacillus velezensis 15F were chosen to generate single and compound microbial inoculums for DGW composting to prepare substrates for P. ostreatus growth. Compared with non-inoculated control or single microbial inoculation, all composite inoculations, especially the three-microbial compound, led to faster organic metabolism, shorter composting process, and improved physicochemical properties of DGW. P. ostreatus growth assays showed the fastest mycelial colonization (20.43 μg·g-1 ergosterol) and extension (9 mm/d), the highest ligninolytic enzyme activities (Lac, 152.68 U·g-1; Lip, 15.56 U·g-1; MnP, 0.34 U·g-1; Xylanase, 10.98 U·g-1; FPase, 0.71 U·g-1), and the highest lignin degradation ratio (30.77%) in the DGW sample after 12 h of composting with the three-microbial compound inoculation when compared to other groups. This sample was relatively abundant in bacteria playing critical roles in amino acid, carbohydrate, energy metabolism, and xenobiotic biodegradation, as suggested by metagenomic analysis. The feed value analysis revealed that P. ostreatus mycelia full colonization in composted DGW led to high fiber content retention and decreased lignin content (final ratio of 5% lignin) but elevated protein concentrations (about 130 g·kg-1 DM). An additional daily weight gain of 0.4 kg/d was shown in cattle feeding experiments by replacing 60% of regular feed with it. These findings demonstrate that compound inoculant consisting of three indigenous microorganisms is efficient to compost DGW and facilitate P. ostreatus growth. P. ostreatus decreased the lignin content of composted DGW during its mycelial growth, improving the quality of DGW for feeding cattle.

Vector bionomic of Culex species in possible Japanese Encephalitis Transmitted areas of Ein-me Township, Ayayawady Region in Myanmar

Japanese encephalitis is a public health problem in many parts of Myanmar. The diseases are transmitted to human by the biting of vector mosquitoes. The study was conducted in JE suspected cases occurred villages ThaPhan Pinseit and ThaPyu Pinseit villages in ThaPhan Pinseit RHC and PaukGone and SarPhyusu villages in PaukGone village in PaukGone RHC from Ayeyawady Region were selected for JE vector surveillance from December 2023 to March 2024. 50 houses from the pigs were randomly selected from each village. Mosquitoes were collected in all selected houses and pig farms using WHO sucking tubes. Larvae were collected in and around 1 Kilometer radius from study sites. Result found that JE main vector Cx. tritaeniorhynchus was abundantly collected in all study village and the highest number of vectors Cx. tritaeniorhynchus was collected from SarPhyusu village 2284 followed by ThaPyu Pinseit 1890 and lowest number of main vectors was collected in ThaPhan Pinseit village (1268). In overall collected mosquitoes, the highest density was found 74.18% of main vector Cx. tritaeniorhynchus followed by suspected vector Cx. vishnui 10.04%, and lowest density was observed Mansonia and An. vagus 0.33% each. Peak biting time of main vector Cx. tritaeniorhynchus was found 9-10 pm. Suspected vector Cx. vishnui was also collected in high number in all villages. Nine species of mosquitoes were collected from the study villages. Of this only four species of An. hyrcanus, An. barbirostris, An. vagus and An. tesellatus were collected. These Anopheles species were available in PaukGone and SarPhyusu villages. Anopheles hyrcanus was collected from all villages. Culex tritaeniorhynchus larvae were abundantly collected from rice fields, polluted water pools and stagnant water pools with plenty of hyacinth plants and also larvae were collected in concrete jars, Bago jars and metal drums water which water was stored for fire water. High density of main vector and suspected vector were collected in all JE suspected villages, pig farms, pigs, and breeding sources of vectors mosquitoes were available in the villages and also JE suspected cases are available in the all villages. This study provides information of high collection of main vector adult and larvae on risk of further transmission in the study areas. Environmental and ecological factors are responsible for the spread of JE virus. Therefore, awareness of community to vector borne diseases control activities and health education to all family members should be strengthened to prevent JE transmission in the villages.

URGENSI PERLINDUNGAN HUKUM PADA PERAJIN ARAK BALI PASCA DITETAPKANNYA PERATURAN GUBERNUR BALI NOMOR 1 TAHUN 2019 (STUDI YURIDIS: PERAJIN ARAK BALI DI DESA LES KECAMATAN TEJAKULA KABUPATEN BULELENG)

Regulation of the Governor of Bali Province Number 1 of 2020 concerning Management of Balinese Fermented and/or Distilled Beverages. Reducing imports of traditional and non-traditional alcohol from abroad while serving Balinese arak on site. Bali Governor Regulation Number 1 of 2020, which consists of nine chapters and nineteen articles, covers all supporting aspects of traditional alcoholic drinks, including protection, maintenance, utilization, business partnerships, promotion and branding, direction and supervision, community involvement, administrative sanctions, and typical Balinese funding. With the regulations issued, there is an urgency to implement protection for Balinese Arak producers after the enactment of Bali Governor's Regulation Number 1 of 2020, especially in Les Village, Tejakula District, Buleleng Regency as well as factors influencing legal protection for Balinese Arak Producers in Les Village, Tejakula District, Buleleng Regency. If viewed in terms of effectiveness, it can be measured by paying attention to five factors consisting of legal factors, law enforcement, facilities and infrastructure, society and legal culture.

Establishment of Layperson First Aid Burn Cases with E-Fa Game Technology

Burns that occur in children are a vital health problem but are not as widely disclosed as compared to adults. Thermal burns most often occur in children, either from fire or hot water. Children are an age group that is vulnerable to injury due to curiosity about things around them. One injury that often occurs in school-aged children is burns. The results of the situation analysis and discussions with partners formulated one problem, namely: lack of information, knowledge and understanding and related to the problem of first aid in groups of students at school, especially in providing first aid for burns. The proposer offers through PKM in first aid for burns using Education First. Aid (E-Fa Game) as promotional media. In this PKM activity, the school as a partner participates in program implementation by providing human resources, namely students and teachers in this activity.

Определение анионов неорганических кислот в спиртных дистиллированных напитках методом капиллярного электрофореза с кондуктометрическим детектированием

Distilled alcoholic drinks are popular all over the world. Monitoring the quality and safety of such drinks requires modern instrumental methods. Chemical composition of alcoholic beverages has become focus of numerous experimental and theoretical publications. However, this area remains understudied. This research provided an experimental confirmation of the capillary electrophoresis as a prospective method for determining anions in alcoholic beverages.
 The study involved model solutions and 30 samples of distilled alcoholic beverages purchased by random sampling from a retail chain. The chemical analysis relied on a PrinCE 560 capillary electrophoresis system equipped with a conductometric detector.
 The study revealed the working parameters for electrophoretic analysis that provided a selective qualitative and quantitative test of five target analytes in 9 min. The optimal composition of the buffer solution and the optimal electrolyte ratios were 30 mmol/dm3 L-Histidine and 30 mmol/dm3 2-(N-Morpholino) ethanesulfonic acid Monohydrate. The correlation between the peak area and the mass concentration was at 0.1–10 mg/dm3 for the target analytes. The approach proved effective in determining chloride, nitrate, sulfate, fluoride, and phosphate ions in whiskey, rum, tequila, moonshine, grain, and rum distillates. The study also included a comparative analysis of the qualitative and quantitative anion profiles in whiskey samples from different countries. All the samples contained 0.22–52.74 mg/dm3 chlorides, 0.60–0.06 mg/dm3 nitrates, 0.25–17.59 mg/dm3 sulfates, and 0.75–12.70 mg/dm3 phosphates.
 Research prospects include a metrologically certified method to identify the anion composition of organic and inorganic acids in distilled alcoholic beverages.

Simulation research of fire water cannon nozzle based on fluent

Fire water cannon is the main equipment in fire protection work, which is evolving towards large flow, long distance and high shooting. As an important core component of fire water monitor, the structural design of nozzle plays an important role in jet performance. The Fluent fluid simulation software was used to simulate the internal flow field of the fire nozzle model with different outlet diameters and convergence angles. The average jet velocity and turbulent kinetic energy under different parameters were compared to obtain the optimal size parameters of the fire nozzle. The results show that when the inlet diameter is 100 mm, the inlet pressure is 1.2 MPa, the length of the rectifier section is 95 mm, the outlet diameter is 50 mm, and the convergence angle is 11 °, the jet performance of the fire monitor nozzle is the best. The simulation results can provide reference for the structural design and practical application of fire water monitor nozzle.

Bio-Based Tannin Foams: Comparing Their Physical and Thermal Response to Polyurethane Foams in Lightweight Sandwich Panels

Rigid polyurethane foams are the better-performing material for the most common insulation purposes, like sandwich panels. Nevertheless, they are highly flammable materials, release toxic gases, and are manufactured from fossil sources. As an alternative, tannin foams are bio-based materials that work as innovative alternatives thanks to their great fire resistance, as well as lower smoke and harmful gases emissions. In the present study, lab-made foams of both materials were compared through morphology, thermal and fire degradation, mechanical properties, and water affinity in order to fill the technological gap between them and their related sandwich panels. It was observed that tannin foams are still relatively inhomogeneous (since formaldehyde was not used) and present a high affinity for water but have higher thermal and fire resistance. The flat compression strength of the polyurethane sandwiches was greater than that of tannin sandwiches (3.61 and 3.09 MPa, respectively) thanks, mainly, to the crosslinking degree difference between the resins. Also, tannin foams presented a lower weight loss (−70.684% lower weight loss in flammability tests than polyurethane foams) and the ability to self-extinguish the flame. Therefore, sandwich panels with tannin foam cores could be successful materials in areas that require protection against fire, such as the building engineering and automotive industries.