A small egg is sparking a major public controversy. Just before March 15, the professional whistleblower Wang Hai's team released a video on social media claiming that Huang Tian'e and several other branded eggs tested positive for "canthaxanthin," questioning whether artificial synthetic pigments were added. Huang Tian'e publicly responded by firmly challenging Wang Hai, stating they do not use synthetic canthaxanthin and that the trace amounts detected are at natural background levels. The company disclosed that local market regulators have conducted on-site sampling, and they are currently awaiting official test results. In recent years, many self-media accounts and non-governmental organizations have sent enterprise products for personal testing under the guise of evaluations, then publicly released the results on social media to attract public attention. However, in this canthaxanthin incident, Wang Hai's model of personal testing for whistleblowing has also drawn significant criticism. Both sides are fiercely debating the source of the "canthaxanthin." It has been noted that the two parties have engaged in multiple online disputes, with the core conflict being the origin of the canthaxanthin detected in the eggs. According to the video released by Wang Hai's evaluation, the tested Huang Tian'e eggs contained 0.399 mg/kg of canthaxanthin, while a subsequent test on Huang Tian'e eggs purchased from Yonghui Supermarket detected 1.65 mg/kg. Wang Hai posted on social media that naturally fed eggs should not contain canthaxanthin, alleging it comes from synthetic pigments added to feed. The Huang Tian'e brand was established in 2019, with its parent company being Fengji Food. Since its inception, Huang Tian'e has targeted the high-end egg market, promoting features like "safe to eat raw" and "free from artificial pigments." It has secured multiple rounds of funding from institutions including China International Capital Corporation and Proterra Capital, making it one of the representative brands in China's premium egg segment. Consequently, Wang Hai's claim about the addition of synthetic pigments has garnered widespread market attention. In response, Huang Tian'e publicly stated that canthaxanthin occurs naturally in the environment, such as in algae, fungi (mushrooms), crustaceans, fish, and eggs. The canthaxanthin detected in their eggs is at natural background levels and not artificially added. Citing published literature, Huang Tian'e explained that achieving a yolk color rating of 9 requires a canthaxanthin content exceeding 2 mg/kg in the yolk. Scientifically, the detected level of 0.399 mg/kg is far from sufficient to reach Huang Tian'e's yolk color standard of over 12 degrees. Furthermore, Huang Tian'e emphasized in its official response that there is no commercial incentive for adding the pigment, as it would neither effectively enhance yolk color nor significantly reduce costs. Additionally, the company's current feed production equipment is incapable of adding canthaxanthin uniformly, posing risks of uneven mixing. However, Wang Hai countered via his personal social media account, asserting that canthaxanthin in eggs is 100% derived from feed additives, with no natural source, and that chickens cannot synthesize it themselves. He accused Huang Tian'e's response of lacking integrity. Liu Wenbin, Quality Management Head at Fengji Food Group, informed reporters that the company produces its own feed using raw materials sourced from fixed suppliers, denying any addition of canthaxanthin. Liu also raised several questions regarding the authenticity and objectivity of Wang Hai's testing motives and the actual condition of the samples submitted. For instance, the production date on the test report provided by Wang Hai was December 16, 2025, while the product's shelf life is 30 days. The testing period (January 13 to 19) entirely overlapped with and even exceeded the product's expiration date. Huang Tian'e's official Weibo account also issued a statement confirming that local market regulators have completed product sampling, with samples sent to authoritative testing agencies. The company is awaiting official results and will publish them promptly on its official channels. The controversy surrounding canthaxanthin. Public information indicates that canthaxanthin, also known as canthaxanthin, is a carotenoid pigment widely found in nature. It is used as a food additive, nutritional supplement, or animal feed colorant, including in eggs, where yolk color is primarily influenced by the carotenoid content in chicken feed. According to the "Feed Additive Safety Usage Guidelines," canthaxanthin is a legal colorant permitted for use in poultry production, with a maximum limit of 8 mg/kg in layer feed. However, there are no specific standards for the final egg product, which is why it has rarely been known to the public previously. At a recent industry forum, Professor Ma Meihu from the College of Food Science and Technology at Huazhong Agricultural University noted that canthaxanthin is naturally present in algae and fungi. After hens consume natural feed, their bodies naturally convert and deposit canthaxanthin. However, experts at the forum pointed out that the chemical structure of naturally extracted and synthetically produced canthaxanthin is identical. Standard methods like High-Performance Liquid Chromatography (HPLC) and Liquid Chromatography-Mass Spectrometry (LC-MS) can only detect total content but cannot distinguish the source. Wu Shugeng, a researcher at the Feed Research Institute of the Chinese Academy of Agricultural Sciences, told reporters that public attention has been misdirected. Canthaxanthin has been used globally since 1984 as an additive; it does not stain mammals and, besides its coloring function, has antioxidant benefits. It is harmless and even beneficial to hens, chicks, and humans. The absence of standards for canthaxanthin in eggs in China for many years, and the lack of efforts to establish them, indirectly indicates that it is not a significant concern. According to the standards of the Joint FAO/WHO Expert Committee on Food Additives (JECFA), the acceptable daily intake of canthaxanthin is 0.03 mg/kg of body weight. For a 70 kg adult, the allowable daily intake is 2.1 mg. Based on the levels detected by Wang Hai's tests, a single Huang Tian'e egg contains approximately 0.02 mg of canthaxanthin, leaving a substantial safety margin. In Wu Shugeng's view, the canthaxanthin controversy serves as a warning to the industry. On one hand, relevant authorities and enterprises need to increase investment in additive research, such as distinguishing between natural and artificial sources and understanding dose-efficacy relationships, to help the industry use additives efficiently and reasonably. On the other hand, there is a need for greater public science education to bridge the gap between research and public understanding. During a live broadcast on March 16, Feng Bin, founder of Huang Tian'e and chairman of Fengji Food Group, stated that this incident highlights the lack of standard regulations regarding egg color formation in the industry, which could drive progress. Huang Tian'e plans to establish standards related to egg color, ensuring that the production and regulation of naturally or artificially influenced egg and yolk colors are based on clear guidelines. Personal testing for whistleblowing must not cross legal boundaries. In recent years, submitting products for personal testing has become a common practice among self-media and professional whistleblowers. In this incident, Wang Hai's testing of eggs garnered significant public attention and traffic but also raised numerous doubts among netizens. The report released by Wang Hai's team indicated that the commissioned testing agency (SAMCDC) was Qingdao Yuanxin Testing Technology Co., Ltd. According to its website, Qingdao Yuanxin was established in 2014 and is a third-party testing service provider accredited by the Shandong Provincial Bureau of Quality and Technical Supervision (CMA) and the China National Accreditation Service for Conformity Assessment (CNAS), affiliated with Guoke General Testing Evaluation Certification Co., Ltd. The test report for Huang Tian'e eggs provided by Wang Hai's team to the media showed that the testing item was solely for canthaxanthin content. The conclusion section stated, "Based on the client's request, only test data is provided," without specifying the source of the canthaxanthin. As a result, public opinion on the canthaxanthin controversy is polarized. Some netizens believe that consumers lack the ability to verify product safety themselves and that such testing protects consumer interests. However, others question whether Wang Hai's team acted hastily by announcing conclusions about artificial addition without clarifying the source of the canthaxanthin, significantly impacting the enterprise and brand. There are also suspicions that professional whistleblowers' testing is not purely altruistic and may have ulterior motives. Xu Hao, a lawyer at Beijing Jingshi Law Firm, explained that personal testing for whistleblowing is legally grounded and reasonable. However, if it crosses legal boundaries, it can shift from social supervision to unlawful infringement. Under the Consumer Rights Protection Law and Food Safety Law, objective testing can address regulatory gaps and pressure enterprises to comply, serving as a beneficial supplement to market supervision. But legal rights must not be abused; many real-world actions have crossed the line. For example, unilaterally submitted samples without notarized traceability, misinterpreting test data out of context, equating "trace detection" with "illegal addition," exaggerating risks for traffic, or fabricating facts may violate the Civil Code and the Anti-Unfair Competition Law. Extorting high compensation under threat of exposure could even lead to criminal liability under the Criminal Law. Xu Hao advises that personal testing should adhere to compliance底线. Testing should involve genuine consumption with full evidence retention, and accredited institutions should be chosen. When publishing results, only objective data should be presented without making unlawful conclusions, as crossing these boundaries carries clear legal risks.
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