The place to ask China-related questions!
Beijing Shanghai Guangzhou Shenzhen Chengdu Xi'an Hangzhou Qingdao Dalian Suzhou Nanjing More Cities>>

Categories

Close
Welcome to eChinacities Answers! Please or register if you wish to join conversations or ask questions relating to life in China. For help, click here.
X

Verify email

Your verification code has been sent to:

Didn`t receive your code? Resend code

By continuing you agree to eChinacities's Privacy Policy .

Sign up with Google Sign up with Facebook
Sign up with Email Already have an account? .
Posts: 2546

Emperor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

Q: Rinsing dishes with tea in restaurants?

We have all witnessed this ritual and I am willing to bet most of you do the same thing now without thinking like me.

 

Even washing packaged and supposedly sanitized dishes, cups and chopsticks.

 

Does this ritual actually do anything like kill germs or is it just for peace of mind?

11 years 48 weeks ago in  Health & Safety - China

 
Answers (10)
Comments (7)
Posts: 3030

Emperor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

It is supposed to be done to make sure the utensils are clean and no germs in it.  But both, you and me, know that the tea served is at around 140 to 150 degrees F, and to kill germs it would have to be at 212 degrees F, and submerged for a few minutes like an autoclave will do.  So, in reality is a futile attempt, a waste of time and good tea, and all they really get is peace of mind.

Many restaurants do use outside companies to supply clean and sanitized utensils with the hope that more clients will come and eat there in confidence, even if cost of this is higher than in house cleaning, no matter how good that may be.

My GF gets very upset at me when I refuse to do it, and in many occasions she will open the package and do the ritual for her and for me, even if I have explained to her over a 1000 times she is not accomplishing anything.  But she swears she is, so who am I to tell her realities of science ?.   Her favorite answer is to tell me to look around and see how everyone is also doing it, and my answer to that is "if someone jumps off a cliff, will you follow him and jump too?.  After that I shut up, otherwise I sleep in the dog house, and I rather not leave my HARD MATTRESS !.

thedude:

I have had the same arguments with my girlfriend too. I gave up long ago. She usually does it for me, but sometimes I will return the favour and do it for her.

11 years 48 weeks ago
Report Abuse
Report Abuse
11 years 48 weeks ago
 
Posts: 134

Governor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

I didnt bother questioning it, at first it looked a bit weird and of course i knew right away that it does absolutely nothing in regards to actually cleaning anything, but what the hell.. when in rome!

Report Abuse
11 years 48 weeks ago
 
Posts: 55

Governor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

I have only been to beijing, zhejiang and guangdong. I believe only southerners do this and elsewhere doesnt bother.

Report Abuse
11 years 48 weeks ago
 
Posts: 1096

Shifu

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

tea has antibacterial properties and it can only help get rid of odors and foul taste. so both of you might want to listen to your girls. 

  look below 

Antioxidant and antibacterial properties of green, black, and herbal teas of Camellia sinensis.
Authors:
Chan EWSoh EYTie PPLaw YP
Author Address:
Faculty of Applied Sciences, UCSI University, Cheras, Kuala Lumpur, Malaysia.
Source:
Pharmacognosy Research [Pharmacognosy Res] 2011 Oct; Vol. 3 (4), pp. 266-72.
Publication Type:
Journal Article
Language:
English
Language Code:
eng
Journal Information:
Country of Publication: India NLM ID: 101558769 Publication Model: Print Cited Medium: Internet ISSN: 0974-8490 (Electronic) Linking ISSN:09748490 NLM ISO Abbreviation: Pharmacognosy Res Subsets: In Process
Abstract:
Background: The role of non-polymeric phenolic (NP) and polymeric tannin (PT) constituents in the antioxidant and antibacterial properties of six brands of green, black, and herbal teas of Camellia sinensis were investigated.
Materials and Methods: Total phenolic content (TPC) and ascorbic acid equivalent antioxidant capacity (AEAC) were assessed using the Folin-Ciocalteu and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays, respectively. Minimum inhibitory dose (MID) against Gram-positive Micrococcus luteus, Staphylococcus aureus, and Bacillus cereus, and Gram-negative. Escherichia coli, Salmonella typhi, and Pseudomonas aeruginosa was assessed using the disc-diffusion method. Teas were extracted with hot water successively three times for one hour each time. The extracts were fractionated using Sephadex LH-20 column chromatography to obtain the NP and PT constituents.
Results: Extraction yields ranged from 12 to 23%. Yields of NP fractions (70-81%) were much higher than those of PT fractions (1-11%), suggesting that the former are the major tea components. Ranking of antioxidant properties of extracts was green tea>black tea>herbal tea.For all six teas, antioxidant properties of PT fractions were significantly higher than extracts and NP fractions. Extracts and fractions of all six teas showed no activity against the three Gram-negative bacteria. Green teas inhibited all three Gram-positive bacteria with S. aureus being the least susceptible. Black and herbal teas inhibited the growth of M. luteus and B. cereus, but not S. aureus. The most potent were the PT fractions of Boh Cameron Highlands and Ho Yan Hor with MID of 0.01 and 0.03 mg/disc against M. luteus.
Conclusion: Results suggested that NP constituents are major contributors to the antioxidant and antibacterial properties of teas of C. sinensis. Although PT constituents have stronger antioxidant and antibacterial properties, they constitute only a minor component of the teas.
Entry Dates:
Date Created: 20120106
Update Code:
20120112
PubMed Central ID:
PMC3249787
PMID:
22224051
Database:
MEDLINE

   

Pu-erh tea is made via a natural fermentation process. In this study, Pu-erh tea was used as a raw material for nanomaterials preparation and as anantibacterial agent. Antibacterial activities on Escherichia coli of Pu-erh tea, Pu-erh tea powder (PTP) of different sizes, and Pu-erh tearesidual powder were firstly determined, respectively. With polyvinyl alcohol as the carrier, through an electrospinning technique, different kinds of nanofibrous membranes were obtained from the extract of Pu-erh tea and nano-PTP (NPTP), and their antibacterial properties and mechanism against E. coli were evaluated. The results showed better antibacterial activity with smaller PTP particles, the nano-sized particles had the best effects, and the MIC of NPTP was 13.5 mg/mL. When NPTP was in nanofibrous membranes, the antibacterial activity decreased slightly, but increased with modification by ZnO. Pu-erh tea in nanofibrous membranes damaged the E. coli cell membranes and caused leakage of K and enzymes. What is more is that damage of the cell walls led to the leakage of fluorescent proteins from enhanced green fluorescence protein-expressing E. coli. These results indicate that the Pu-erh tea nanofibrous membranes had good antibacterial activities against E. coli, which may provide a promising application of novel antibacterial materials. [ABSTRACT FROM AUTHOR]
 
Copyright of Applied Microbiology & Biotechnology is the property of Springer Science & Business Media B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Author Affiliations:
1School of Life Sciences and Technology, Tongji University, No. 1239 Siping Road Shanghai 200092 People's Republic of China
2College of Life Sciences, Nanjing Agricultural University, No. 1 Weigang Road Nanjing 210095 People's Republic of China

 

 

http://www.sciencedaily.com/releases/2004/05/040526070934.htm

 

http://www.whiteteacentral.com/antibacterial.html

 

http://icmr.nic.in/ijmr/2005/july/0709.pdf

 

http://web.ebscohost.com/ehost/detail?vid=4&hid=10&sid=98bcc3a8-4094-498e-80ba-f77bec90cfd5%40sessionmgr12&bdata=JnNpdGU9ZWhvc3QtbGl2ZSZzY29wZT1zaXRl#db=cmedm&AN=22224051

 

 

http://web.ebscohost.com/ehost/detail?vid=4&hid=10&sid=98bcc3a8-4094-498e-80ba-f77bec90cfd5%40sessionmgr12&bdata=JnNpdGU9ZWhvc3QtbGl2ZSZzY29wZT1zaXRl#db=aph&AN=71345782

 

 

 

i know my teasurprise

 

 

 

 

edit2403:

that is very enlightening. I must admit that I have done the ritual rinsing with tea at hundreds of restaurant meals without thinking it had any real benefit. 

11 years 48 weeks ago
Report Abuse

Jíliú.hé:

thanks you are the first to comment on it they used to use used to live to help seal and clean wounds. though i have thought of using tea to clean i never thought that it was used for cleaning cups. what will they think of next

11 years 48 weeks ago
Report Abuse

edit2403:

I bought a traditional tea set once and my wife often washes it (or keeps it submerged) in green tea. Apparently, when a tea set is made from good-quality clay, the tea permanently infuses into the cups etc. and this is meant to enhance the flavor.  

11 years 48 weeks ago
Report Abuse

Jíliú.hé:

thanks again man. how did i get flagged though. 

11 years 48 weeks ago
Report Abuse

Hugh.G.Rection:

You might know tea but you obviously know diddly squat about sanitisation!

11 years 28 weeks ago
Report Abuse

Jíliú.hé:

that a lot of dislikes for a scientific article and who still say diddles anything.

11 years 27 weeks ago
Report Abuse
Report Abuse
11 years 48 weeks ago
 
Posts: 134

Governor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

Well i like the idea of wiping (or rinsing) something in a restaurant that touches my lips, so i mainly do it to clean the edge of the cup

Report Abuse
11 years 48 weeks ago
 
Posts: 9202

Emperor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

When in Rome. I don't drink the tea, so it's good for something, plus I get to make a mess and no one cares.

Report Abuse
11 years 28 weeks ago
 
Posts: 500

Shifu

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

I see this "ritual" more often in southern China. Germ are killed at different temperatures, some just above 50C some over 100C, but it can clean a bit, if not from germs - then from other things like dust etc.

 

I'm used to it just like small ritual. And not even in every place. 

Report Abuse
11 years 28 weeks ago
 
Posts: 4545

Emperor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

let 'em do it I say. harmless enuf, and they seem to enjoy it.

Report Abuse
11 years 28 weeks ago
 
Posts: 1202

Shifu

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

I do it. Gets off soap residue, dust and what not.

 

Seems to be some ethnocentric opinions taking shape in this question. I love it! 

Report Abuse
11 years 28 weeks ago
 
Posts: 9755

Emperor

0
0
You must be a registered user to vote!
You must be a registered user to vote!
0

I have stopped doing this. If I don't trust the plates are clean then I will rather go elsewhere to eat than this emergency washing. 

most often the tea served is lukewarm

Report Abuse
11 years 12 weeks ago
 
Know the answer ?
Please or register to post answer.

Report Abuse

Security Code: * Enter the text diplayed in the box below
Image CAPTCHA
Enter the characters shown in the image.
  • Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <img> <br> <p> <u>
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
  • Textual smileys will be replaced with graphical ones.

More information about formatting options

Forward Question

Answer of the DayMORE >>
A: In my personal experience, teaching certificates have varied in releva
A:In my personal experience, teaching certificates have varied in relevance depending on the context and location. Here's a breakdown of each aspect:a) Getting the teaching job: Teaching certificates can certainly enhance your chances of securing a teaching position, especially in formal educational settings such as schools and language institutions. Many employers prefer candidates who have undergone specific training in pedagogy and instructional techniques, which these certificates often provide. However, other factors such as experience, references, and the demand for teachers in a particular area also play significant roles in the hiring process.b) Getting a higher salary than your uncertified competitors: In some cases, holding a teaching certificate can indeed lead to a higher salary compared to uncertified competitors. Many educational institutions have structured salary scales that take into account factors such as level of education, years of experience, and additional certifications. Holding a teaching certificate may place you in a higher salary bracket or make you eligible for certain salary incentives or bonuses. However, this can vary widely depending on the specific policies of the institution or organization.c) Getting promotions: Teaching certificates can be beneficial for career advancement and securing promotions within the field of education. They demonstrate a commitment to professional development and mastery of teaching skills, which are qualities that many employers value when considering candidates for leadership positions or administrative roles. Additionally, some promotions may require specific certifications or qualifications, making holding a teaching certificate essential for advancement in certain cases.Regarding which certificate yields better results, it largely depends on the specific requirements of the job market and the educational context in which you intend to work. For example:A Postgraduate Certificate in Education (PGCE) is often highly regarded in formal school settings and can be advantageous for those seeking positions in primary or secondary education.Montessori certification is valuable for individuals interested in working in Montessori schools or implementing Montessori principles in their teaching approach.A Teaching English as a Foreign Language (TEFL) certificate is particularly relevant for those seeking to teach English to non-native speakers in international contexts or language schools.Ultimately, the best certificate for you will depend on your career goals, the specific requirements of the positions you're interested in, and the preferences of potential employers in your target job market. It's essential to research the requirements and preferences of employers in your desired field and tailor your qualifications accordingly. -- ruqaiya761